tools.js

'use strict';
const TOOLS = {
  // ── PDF ──────────────────────────────────────────────
  'compress-pdf':{cat:'pdf',ic:'compress',label:'Compress PDF',desc:'Reduce PDF file size while preserving quality.',accept:'.pdf',multi:false,tips:['Works best on PDFs containing images','Smaller size = faster email & upload','Original file is never modified'],opts:[{id:'q',label:'Compression Level',type:'select',choices:['Low — best quality','Medium — balanced','High — smallest file'],def:'Medium — balanced'}]},
  'merge-pdf':{cat:'pdf',ic:'merge',label:'Merge PDFs',desc:'Combine multiple PDF files into one document.',accept:'.pdf',multi:true,tips:['Upload files in the order you want them merged','Works with any number of PDFs','Bookmarks and links are preserved'],opts:[]},
  'split-pdf':{cat:'pdf',ic:'split',label:'Split PDF',desc:'Extract specific pages or split into separate files.',accept:'.pdf',multi:false,tips:['Use "1,3,5" for specific pages','Use "2-8" for a page range','"all" extracts every page separately'],opts:[{id:'pages',label:'Pages to Extract',sub:'e.g. 1,3,5-8 or "all" for every page',type:'text',def:'all'}]},
  'rotate-pdf':{cat:'pdf',ic:'rotate',label:'Rotate PDF',desc:'Rotate all pages to correct orientation.',accept:'.pdf',multi:false,tips:['Rotation applies to all pages uniformly','Use 180° to flip upside-down scans'],opts:[{id:'angle',label:'Rotation Angle',type:'select',choices:['90° Clockwise','180°','90° Counter-Clockwise'],def:'90° Clockwise'}]},
  'pdf-to-jpg':{cat:'pdf',ic:'img',label:'PDF → JPG',desc:'Convert each PDF page to a high-quality JPG image.',accept:'.pdf',multi:false,tips:['2× scale gives crisp results for most uses','All pages are packed into a ZIP file','Higher scale = larger file size'],opts:[{id:'scale',label:'Resolution',type:'range',min:1,max:3,step:.5,def:2,unit:'×'},{id:'quality',label:'JPEG Quality',type:'range',min:60,max:100,step:1,def:92,unit:'%'}]},
  'jpg-to-pdf':{cat:'pdf',ic:'pdf',label:'JPG → PDF',desc:'Combine one or more images into a single PDF.',accept:'image/*',multi:true,tips:['Upload multiple images to combine them','Each image becomes one page','Use "Fit to Image" to preserve original dimensions'],opts:[{id:'pagesize',label:'Page Size',type:'select',choices:['A4 Portrait','A4 Landscape','Letter Portrait','Fit to Image'],def:'A4 Portrait'},{id:'margin',label:'Margin',type:'select',choices:['None','Small (5mm)','Medium (15mm)','Large (25mm)'],def:'Medium (15mm)'}]},
  'unlock-pdf':{cat:'pdf',ic:'unlock',label:'Unlock PDF',desc:'Remove password protection from a PDF file.',accept:'.pdf',multi:false,tips:['You must know the current password to unlock','Works only on user-password protected PDFs'],opts:[{id:'pass',label:'Current Password',type:'password',def:''}]},
  'protect-pdf':{cat:'pdf',ic:'lock',label:'Protect PDF',desc:'Add a password to prevent unauthorized access.',accept:'.pdf',multi:false,tips:['Use a strong password with mixed characters','Restrict printing and copying for extra security'],opts:[{id:'p1',label:'New Password',type:'password',def:''},{id:'p2',label:'Confirm Password',type:'password',def:''},{id:'noPrint',label:'Restrict Printing',type:'toggle',def:false},{id:'noCopy',label:'Restrict Copying',type:'toggle',def:false}]},
  'add-page-numbers':{cat:'pdf',ic:'number',label:'Page Numbers',desc:'Add page numbers to every page of a PDF.',accept:'.pdf',multi:false,tips:['Use prefix like "Page" to get "Page 1"','Skip first page option for cover pages','{page} inserts page number in text fields'],opts:[{id:'pos',label:'Position',type:'select',choices:['Bottom Centre','Bottom Right','Bottom Left','Top Centre','Top Right'],def:'Bottom Centre'},{id:'start',label:'Start From',type:'number',def:'1'},{id:'prefix',label:'Prefix Text',sub:'Optional — e.g. "Page" gives "Page 1"',type:'text',def:''},{id:'skipFirst',label:'Skip First Page',type:'toggle',def:false}]},
  'stamp-pdf':{cat:'pdf',ic:'stamp',label:'Stamp PDF',desc:'Add a diagonal text watermark to every page.',accept:'.pdf',multi:false,tips:['Common stamps: CONFIDENTIAL, DRAFT, APPROVED','Lower opacity makes text less intrusive','Red and grey are most professional'],opts:[{id:'text',label:'Stamp Text',type:'text',def:'CONFIDENTIAL'},{id:'opacity',label:'Opacity',type:'range',min:5,max:60,step:5,def:15,unit:'%'},{id:'color',label:'Colour',type:'select',choices:['Red','Blue','Grey','Black','Green'],def:'Red'},{id:'fontSize',label:'Font Size',type:'select',choices:['Small','Medium','Large'],def:'Medium'}]},
  'pdf-info':{cat:'pdf',ic:'info',label:'PDF Inspector',desc:'View detailed metadata, page count, and file info.',accept:'.pdf',multi:false,tips:['Shows author, creator, creation date','Exports a full text report','Useful for audit and compliance checks'],opts:[]},
  'delete-pdf-pages':{cat:'pdf',ic:'del',label:'Delete Pages',desc:'Remove specific pages from a PDF document.',accept:'.pdf',multi:false,tips:['Enter pages to DELETE, not to keep','e.g. "1,3" removes pages 1 and 3','Ranges work too: "2-5" removes pages 2–5'],opts:[{id:'pages',label:'Pages to Delete',sub:'e.g. 1,3 or 2-5 (these pages will be removed)',type:'text',def:''}]},
  'duplicate-pdf-pages':{cat:'pdf',ic:'copy',label:'Duplicate Pages',desc:'Copy a specific page multiple times within a PDF.',accept:'.pdf',multi:false,tips:['Duplicate is inserted after the original','Useful for creating form templates'],opts:[{id:'pagenum',label:'Page to Duplicate',type:'number',def:'1'},{id:'copies',label:'Number of Copies',type:'number',def:'2'}]},
  'reorder-pdf':{cat:'pdf',ic:'reorder',label:'Reorder Pages',desc:'Rearrange PDF pages into any custom order.',accept:'.pdf',multi:false,tips:['Enter ALL page numbers in your desired order','e.g. "3,1,2" moves page 3 to the front'],opts:[{id:'order',label:'New Page Order',sub:'Enter ALL pages in desired order e.g. 3,1,2,4',type:'text',def:''}]},
  'pdf-header-footer':{cat:'pdf',ic:'header',label:'Header & Footer',desc:'Add custom text to the top and bottom of every page.',accept:'.pdf',multi:false,tips:['Use {page} for page number','Use {date} for today\'s date','Leave blank to skip header or footer'],opts:[{id:'header',label:'Header Text',sub:'Use {page} and {date} as placeholders',type:'text',def:''},{id:'footer',label:'Footer Text',sub:'Leave blank to skip',type:'text',def:'Page {page}'},{id:'align',label:'Alignment',type:'select',choices:['Left','Centre','Right'],def:'Centre'}]},
  'flatten-pdf':{cat:'pdf',ic:'flatten',label:'Flatten PDF',desc:'Flatten form fields and annotations into static content.',accept:'.pdf',multi:false,tips:['Flattened PDFs cannot be further edited','Good for finalising documents before sharing','Reduces file size in some cases'],opts:[]},
  'pdf-thumbnail':{cat:'pdf',ic:'thumb',label:'PDF Thumbnails',desc:'Generate JPG thumbnail images for all pages.',accept:'.pdf',multi:false,tips:['All thumbnails are packed into a ZIP','Useful for document preview systems','Medium size (1×) is best for most uses'],opts:[{id:'scale',label:'Thumbnail Size',type:'select',choices:['Small (0.5×)','Medium (1×)','Large (1.5×)'],def:'Medium (1×)'}]},
  'pdf-to-csv':{cat:'pdf',ic:'table',label:'PDF → CSV',desc:'Extract table data from a PDF into a CSV spreadsheet.',accept:'.pdf',multi:false,tips:['Works best on simple text-based tables','Complex or scanned PDFs may not extract correctly','Always verify the output after extraction'],opts:[{id:'separator',label:'CSV Separator',type:'select',choices:['Comma (,)','Semicolon (;)','Tab'],def:'Comma (,)'}]},
  'pdf-bookmarks':{cat:'pdf',ic:'bookmark',label:'PDF Bookmarks',desc:'Add a clickable table of contents to a PDF.',accept:'.pdf',multi:false,tips:['Format: Title: PageNumber on each line','Bookmarks appear in PDF reader sidebar'],opts:[{id:'bookmarks',label:'Bookmarks',sub:'Format: Title: PageNumber — one per line',type:'__ta__',def:'Introduction: 1\nChapter 1: 3\nConclusion: 10'}]},
  'pdf-to-word':{cat:'pdf',ic:'text',label:'PDF → Word',desc:'Convert PDF to DOCX. Visual mode preserves 100% layout as a crisp image. Editable mode reconstructs real movable text boxes over the page — select, edit and reposition every element.',accept:'.pdf',multi:false,tips:['Visual mode: every page rendered as image — pixel-perfect but not editable','Editable mode: background image + floating text boxes — real selectable, movable text over the original layout','Higher quality = sharper background image (both modes)'],opts:[{id:'convMode',label:'Conversion Mode',type:'select',choices:['Visual (Exact Layout)','Text (Editable)'],def:'Visual (Exact Layout)'},{id:'quality',label:'Render Quality',sub:'Higher = sharper but larger file',type:'select',choices:['1 — Fast / Small','2 — Balanced (Recommended)','3 — High Quality'],def:'2 — Balanced (Recommended)'}]},
  'word-to-pdf':{cat:'pdf',ic:'pdf',label:'Word → PDF',desc:'Convert .docx or .txt files into a clean, properly formatted PDF.',accept:'.doc,.docx,.txt',multi:false,tips:['Reads actual DOCX text content — not just raw bytes','Auto-detects headings for better formatting','Long documents are paginated automatically'],opts:[]},
  'ocr-pdf':{cat:'pdf',ic:'search',label:'PDF Text Extractor',desc:'Extract all selectable text from a PDF into a plain text or Markdown file.',accept:'.pdf',multi:false,tips:['Works on text-based PDFs — scanned image PDFs cannot be extracted','Leave page range empty to extract all pages','Use Markdown output to preserve heading structure'],opts:[{id:'ocrFmt',label:'Output Format',type:'select',choices:['Plain Text','Markdown'],def:'Plain Text'},{id:'ocrPages',label:'Page Range',sub:'e.g., 1-3, 5, 7 — leave empty for all pages',type:'text',def:''}]},

  // ── IMAGE ────────────────────────────────────────────
  'compress-image':{cat:'img',ic:'compress',label:'Compress Image',desc:'Reduce image file size with quality control and before/after preview.',accept:'image/jpeg,image/png,image/webp',multi:true,tips:['70–85% quality is ideal for web use','Batch compress multiple images at once','Before/after comparison shown for single files'],opts:[{id:'quality',label:'Quality',type:'range',min:10,max:95,step:1,def:78,unit:'%'},{id:'maxw',label:'Max Width (px)',sub:'Leave blank to keep original width',type:'number',def:''}]},
  'resize-image':{cat:'img',ic:'resize',label:'Resize Image',desc:'Resize images by pixels or percentage with live preview.',accept:'image/*',multi:false,tips:['Live preview updates as you type','Lock aspect ratio to prevent distortion','Social media presets included'],opts:'__resize__'},
  'crop-image':{cat:'img',ic:'crop',label:'Crop Image',desc:'Visually select and crop any area of your image.',accept:'image/*',multi:false,tips:['Click and drag on the image to select area','Use aspect lock buttons for exact ratios','Fine-tune coordinates with input fields'],opts:[]},
  'convert-to-jpg':{cat:'img',ic:'convert',label:'Convert → JPG',desc:'Convert PNG, WEBP, GIF or BMP images to JPEG.',accept:'image/png,image/webp,image/gif,image/bmp',multi:true,tips:['White background fills transparent areas by default','Batch convert multiple files at once'],opts:[{id:'quality',label:'JPEG Quality',type:'range',min:50,max:100,step:1,def:92,unit:'%'},{id:'bgcolor',label:'Background Fill',type:'select',choices:['White','Black','Light Grey'],def:'White'}]},
  'convert-from-jpg':{cat:'img',ic:'convert',label:'JPG → PNG/WEBP',desc:'Convert JPEG images to PNG or WEBP format.',accept:'image/jpeg,image/jpg',multi:true,tips:['PNG is lossless — perfect for graphics','WEBP is ~30% smaller — ideal for web'],opts:[{id:'fmt',label:'Output Format',type:'select',choices:['PNG — Lossless','WEBP — Smaller'],def:'PNG — Lossless'}]},
  'grayscale':{cat:'img',ic:'bw',label:'Grayscale',desc:'Convert colour images to black and white.',accept:'image/*',multi:true,tips:['Enhance Contrast improves definition','Batch process multiple images at once'],opts:[{id:'contrast',label:'Enhance Contrast',type:'toggle',def:false}]},
  'watermark-image':{cat:'img',ic:'water',label:'Watermark',desc:'Add a custom text watermark to protect your images.',accept:'image/*',multi:false,tips:['Diagonal placement is harder to remove','Lower opacity creates a subtle watermark','Tiled covers the entire image'],opts:[{id:'text',label:'Watermark Text',type:'text',def:'© Your Company'},{id:'opacity',label:'Opacity',type:'range',min:10,max:90,step:5,def:30,unit:'%'},{id:'pos',label:'Position',type:'select',choices:['Centre (diagonal)','Bottom Right','Bottom Left','Top Right','Top Left','Tiled'],def:'Centre (diagonal)'},{id:'color',label:'Text Colour',type:'select',choices:['White','Black','Red','Blue','Grey'],def:'White'}]},
  'flip-image':{cat:'img',ic:'flip',label:'Flip & Mirror',desc:'Flip images horizontally, vertically or both.',accept:'image/*',multi:true,tips:['Horizontal flip = mirror effect','Batch process multiple files at once'],opts:[{id:'dir',label:'Direction',type:'select',choices:['Horizontal (Mirror)','Vertical (Flip)','Both'],def:'Horizontal (Mirror)'}]},
  'image-borders':{cat:'img',ic:'border',label:'Add Border',desc:'Add a coloured frame or border around your image.',accept:'image/*',multi:false,tips:['White borders give a photo-print look','Use corner radius for rounded frames'],opts:[{id:'bsize',label:'Border Width (px)',type:'number',def:'20'},{id:'bcolor',label:'Border Colour (hex)',type:'text',def:'#ffffff'},{id:'bradius',label:'Corner Radius (px)',type:'number',def:'0'}]},
  'round-corners':{cat:'img',ic:'corner',label:'Round Corners',desc:'Apply rounded corners and save as transparent PNG.',accept:'image/*',multi:false,tips:['Output is always PNG to preserve transparency','Try radius 40–80 for a natural look'],opts:[{id:'radius',label:'Corner Radius (px)',type:'number',def:'40'},{id:'bg',label:'Background',type:'select',choices:['Transparent (PNG)','White','Black'],def:'Transparent (PNG)'}]},
  'blur-image':{cat:'img',ic:'blur',label:'Blur Image',desc:'Apply Gaussian blur for a soft focus or privacy effect.',accept:'image/*',multi:false,tips:['Higher radius = more blurred','Use blur to anonymise faces or backgrounds'],opts:[{id:'radius',label:'Blur Radius',type:'range',min:1,max:30,step:1,def:5,unit:'px'}]},
  'exif-tool':{cat:'img',ic:'exif',label:'EXIF Viewer',desc:'View or strip hidden metadata from JPEG photos.',accept:'image/jpeg,image/jpg',multi:false,tips:['EXIF data includes GPS, camera model, dates','Strip before sharing photos to protect privacy'],opts:[{id:'mode',label:'Mode',type:'select',choices:['View EXIF data','Strip all EXIF'],def:'View EXIF data'}]},
  'colour-palette':{cat:'img',ic:'palette',label:'Colour Palette',desc:'Extract the dominant colours from any image.',accept:'image/*',multi:false,tips:['Click any colour swatch to copy its hex code','Uses K-means clustering algorithm','Exports as CSS variables and hex list'],opts:[{id:'count',label:'Number of Colours',type:'range',min:2,max:12,step:1,def:6,unit:''}]},
  'image-collage':{cat:'img',ic:'collage',label:'Collage Maker',desc:'Combine multiple images into a single collage.',accept:'image/*',multi:true,tips:['Upload 2–9 images for best results','Auto Grid picks the best layout automatically'],opts:[{id:'layout',label:'Layout',type:'select',choices:['Auto Grid','2 Columns','3 Columns','Horizontal Strip','Vertical Strip'],def:'Auto Grid'},{id:'gap',label:'Gap Between Images',type:'range',min:0,max:24,step:2,def:4,unit:'px'},{id:'bg',label:'Background Colour (hex)',type:'text',def:'#ffffff'},{id:'size',label:'Output Width (px)',type:'number',def:'1200'}]},
  'image-info':{cat:'img',ic:'info',label:'Image Inspector',desc:'Instantly view dimensions, format, file size and metadata.',accept:'image/*',multi:false,tips:['Results shown instantly on upload','Exports a full info report as text'],opts:[]},
  'sprite-sheet':{cat:'img',ic:'sprite',label:'Sprite Sheet',desc:'Pack multiple images into a sprite sheet with CSS map.',accept:'image/*',multi:true,tips:['Reduces HTTP requests in web development','CSS file included with background-position values'],opts:[{id:'cellW',label:'Cell Width (px)',type:'number',def:'64'},{id:'cellH',label:'Cell Height (px)',type:'number',def:'64'},{id:'cols',label:'Columns',type:'number',def:'4'}]},

  // ── TEXT & OFFICE ────────────────────────────────────
  'text-case':{cat:'text',ic:'text',label:'Text Case',desc:'Convert text between UPPERCASE, camelCase, snake_case and more.',accept:null,multi:false,tips:['No file needed — paste text directly','Supports 9 case formats including camelCase and CONSTANT_CASE'],opts:[{id:'inputText',label:'Input Text',type:'__ta__',def:'Paste your text here…'},{id:'case',label:'Output Case',type:'select',choices:['UPPERCASE','lowercase','Title Case','Sentence case','camelCase','PascalCase','snake_case','kebab-case','CONSTANT_CASE'],def:'Title Case'}]},
  'lorem-ipsum':{cat:'text',ic:'lorem',label:'Lorem Ipsum',desc:'Generate placeholder text for designs and mockups.',accept:null,multi:false,tips:['Paragraphs, sentences or words mode','Start with classic "Lorem ipsum" opening'],opts:[{id:'type',label:'Type',type:'select',choices:['Paragraphs','Sentences','Words'],def:'Paragraphs'},{id:'count',label:'Amount',type:'number',def:'3'},{id:'startLorem',label:'Classic Opening',sub:'Start with "Lorem ipsum dolor sit amet…"',type:'toggle',def:true}]},
  'find-replace':{cat:'text',ic:'search',label:'Find & Replace',desc:'Find and replace text across any text-based file.',accept:'.txt,.md,.csv,.json,.xml,.html',multi:false,tips:['Supports regex for advanced pattern matching','Case insensitive mode available'],opts:[{id:'find',label:'Find',type:'text',def:''},{id:'replace',label:'Replace With',type:'text',def:''},{id:'regex',label:'Use Regex',type:'toggle',def:false},{id:'ci',label:'Case Insensitive',type:'toggle',def:false}]},
  'json-formatter':{cat:'text',ic:'json',label:'JSON Formatter',desc:'Beautify, minify and validate JSON files.',accept:'.json,.txt',multi:false,tips:['Catches syntax errors with clear messages','Minify removes all whitespace for smaller files'],opts:[{id:'mode',label:'Mode',type:'select',choices:['Beautify','Minify','Validate only'],def:'Beautify'},{id:'indent',label:'Indentation',type:'select',choices:['2 spaces','4 spaces','Tab'],def:'2 spaces'}]},
  'xml-formatter':{cat:'text',ic:'xml',label:'XML Formatter',desc:'Beautify, minify and validate XML files.',accept:'.xml,.svg,.txt',multi:false,tips:['Also works on SVG files','Validates structure and reports errors clearly'],opts:[{id:'mode',label:'Mode',type:'select',choices:['Beautify','Minify','Validate only'],def:'Beautify'},{id:'indent',label:'Indentation',type:'select',choices:['2 spaces','4 spaces','Tab'],def:'2 spaces'}]},
  'csv-json':{cat:'text',ic:'csv',label:'CSV ↔ JSON',desc:'Convert CSV to JSON or JSON arrays back to CSV.',accept:'.csv,.json,.txt',multi:false,tips:['CSV: first row is treated as the header/keys','JSON: must be an array of objects'],opts:[{id:'direction',label:'Direction',type:'select',choices:['CSV → JSON','JSON → CSV'],def:'CSV → JSON'},{id:'pretty',label:'Pretty Print JSON',type:'toggle',def:true}]},
  'html-to-pdf':{cat:'text',ic:'globe',label:'HTML → PDF',desc:'Convert an HTML file to a readable PDF document.',accept:'.html,.htm',multi:false,tips:['Inline styles are best supported','Renders text content — complex CSS may not fully apply'],opts:[{id:'pagesize',label:'Page Size',type:'select',choices:['A4 Portrait','A4 Landscape','Letter Portrait'],def:'A4 Portrait'},{id:'margin',label:'Margin',type:'select',choices:['None','Small (10mm)','Normal (20mm)','Large (30mm)'],def:'Normal (20mm)'}]},
  'html-preview':{cat:'text',ic:'html',label:'HTML Preview',desc:'Live preview any HTML file in desktop and mobile views.',accept:'.html,.htm',multi:false,tips:['Desktop and mobile toggle available','Sandboxed iframe for security'],opts:[]},
  'invoice-generator':{cat:'text',ic:'invoice',label:'Invoice Generator',desc:'Fill in details and download a professional PDF invoice.',accept:null,multi:false,tips:['Tax is automatically calculated','Supports multiple line items'],opts:[{id:'bizName',label:'Business Name',type:'text',def:''},{id:'bizEmail',label:'Email / Phone',type:'text',def:''},{id:'clientName',label:'Client Name',type:'text',def:''},{id:'invNum',label:'Invoice Number',type:'text',def:'INV-001'},{id:'invDate',label:'Date',type:'text',def:new Date().toLocaleDateString()},{id:'items',label:'Line Items',sub:'Format: Description | Qty | Price — one per line',type:'__ta__',def:'Web Design | 1 | 2500.00\nHosting | 1 | 120.00'},{id:'tax',label:'Tax Rate (%)',type:'number',def:'10'},{id:'notes',label:'Notes',type:'text',def:'Payment due within 30 days'}]},
  'meeting-minutes':{cat:'text',ic:'meeting',label:'Meeting Minutes',desc:'Generate structured meeting minutes as a PDF document.',accept:null,multi:false,tips:['Action items appear in a summary table','Use | to separate Action | Owner | Due date'],opts:[{id:'meeting',label:'Meeting Title',type:'text',def:'Team Meeting'},{id:'mdate',label:'Date',type:'text',def:new Date().toLocaleDateString()},{id:'attendees',label:'Attendees',sub:'Comma-separated names',type:'text',def:''},{id:'agenda',label:'Agenda Items',sub:'One item per line',type:'__ta__',def:'1. Review actions\n2. Project update\n3. AOB'},{id:'decisions',label:'Key Decisions',sub:'One decision per line',type:'__ta__',def:''},{id:'actions',label:'Action Items',sub:'Action | Owner | Due — one per line',type:'__ta__',def:'Send report | John | Friday'},{id:'nextMeeting',label:'Next Meeting',type:'text',def:''}]},
  'line-sorter':{cat:'text',ic:'text',label:'Line Sorter',desc:'Sort lines alphabetically and remove duplicates.',accept:null,multi:false,tips:['Useful for logs and lists'],opts:[{id:'inputText',label:'Input Text',type:'__ta__',def:''},{id:'desc',label:'Descending',type:'toggle',def:false},{id:'uniq',label:'Unique Lines',type:'toggle',def:false}]},
  'whitespace-remover':{cat:'text',ic:'text',label:'Whitespace Remover',desc:'Trim/normalize extra whitespace from text.',accept:null,multi:false,tips:['Great before parsing text'],opts:[{id:'inputText',label:'Input Text',type:'__ta__',def:''}]},
  'text-to-hex':{cat:'text',ic:'text',label:'Text to HEX',desc:'Convert text into hexadecimal bytes.',accept:null,multi:false,tips:['UTF-8 encoding'],opts:[{id:'inputText',label:'Input Text',type:'__ta__',def:''}]},
  'hex-to-text':{cat:'text',ic:'text',label:'HEX to Text',desc:'Convert hexadecimal bytes back to text.',accept:null,multi:false,tips:['Accepts spaces between bytes'],opts:[{id:'inputText',label:'HEX Input',type:'__ta__',def:''}]},

  // ── SECURITY ──────────────────────────────────────────
  'password-gen':{cat:'sec',ic:'password',label:'Password Generator',desc:'Generate cryptographically secure passwords with strength meter.',accept:null,multi:false,tips:['12+ characters recommended for most accounts','All character types = maximum strength','Generated using crypto.getRandomValues()'],opts:[{id:'length',label:'Password Length',type:'range',min:6,max:128,step:1,def:16,unit:' chars'},{id:'upper',label:'Uppercase (A–Z)',type:'toggle',def:true},{id:'lower',label:'Lowercase (a–z)',type:'toggle',def:true},{id:'numbers',label:'Numbers (0–9)',type:'toggle',def:true},{id:'symbols',label:'Symbols (!@#$…)',type:'toggle',def:true},{id:'count',label:'How Many to Generate',type:'range',min:1,max:20,step:1,def:5,unit:''}]},
  'uuid-gen':{cat:'sec',ic:'uuid',label:'UUID Generator',desc:'Generate UUIDs, ULIDs, NanoIDs and Short IDs in bulk.',accept:null,multi:false,tips:['UUID v4 is cryptographically random','ULIDs are sortable by time — great for databases'],opts:[{id:'type',label:'ID Format',type:'select',choices:['UUID v4','UUID v4 (uppercase)','ULID','NanoID (21 chars)','Short ID (8 chars)'],def:'UUID v4'},{id:'count',label:'How Many',type:'range',min:1,max:200,step:1,def:10,unit:''}]},
  'file-hash':{cat:'sec',ic:'hash',label:'File Hash',desc:'Calculate and verify SHA-256, SHA-512, SHA-1 checksums.',accept:'*/*',multi:false,tips:['Paste an expected hash to verify file integrity','SHA-256 is the most widely used standard','Use to detect file tampering or corruption'],opts:[{id:'algos',label:'Algorithms',type:'select',choices:['All (SHA-1 + SHA-256 + SHA-512)','SHA-256 only','SHA-512 only'],def:'All (SHA-1 + SHA-256 + SHA-512)'},{id:'expected',label:'Expected Hash',sub:'Paste here to verify — leave blank to skip',type:'text',def:''}]},
  'url-tool':{cat:'sec',ic:'link',label:'URL Encoder',desc:'Encode or decode URLs and URI components.',accept:null,multi:false,tips:['Encode replaces special chars with %XX','Decode converts %XX back to readable text'],opts:[{id:'mode',label:'Mode',type:'select',choices:['Encode URI Component','Decode URI Component','Encode URL','Decode URL'],def:'Encode URI Component'},{id:'inputText',label:'Input Text',type:'__ta__',def:'https://example.com/search?q=hello world&lang=en'}]},
  'text-encrypt':{cat:'sec',ic:'encrypt',label:'Text Encrypt / Decrypt',desc:'Encrypt or decrypt text using AES-256-GCM.',accept:null,multi:false,tips:['Password is never stored or sent anywhere','Use the same password to decrypt','AES-256-GCM with PBKDF2 key derivation'],opts:[{id:'mode',label:'Mode',type:'select',choices:['Encrypt','Decrypt'],def:'Encrypt'},{id:'password',label:'Password',type:'password',def:''},{id:'inputText',label:'Input Text',type:'__ta__',def:''}]},
  'barcode-gen':{cat:'sec',ic:'barcode',label:'Barcode Generator',desc:'Generate Code128 barcodes as downloadable PNG.',accept:null,multi:false,tips:['Code128 supports all printable ASCII characters','Enable text label to show content below barcode'],opts:[{id:'content',label:'Barcode Content',type:'text',def:'TOOLKIT-001'},{id:'barW',label:'Bar Width',type:'range',min:1,max:4,step:1,def:2,unit:'px'},{id:'barH',label:'Bar Height',type:'range',min:40,max:180,step:10,def:80,unit:'px'},{id:'showText',label:'Show Text Label',type:'toggle',def:true}]},
  'metadata-scrubber':{cat:'sec',ic:'meta',label:'Metadata Scrubber',desc:'Strip hidden metadata from images and PDFs before sharing.',accept:'.pdf,image/jpeg,image/png,image/webp',multi:true,tips:['Images: EXIF, GPS, camera info removed','PDFs: author, software, edit history cleared','Output preserves the original file format'],opts:[]},
  'file-encrypt':{cat:'sec',ic:'filelock',label:'File Encrypt / Decrypt',desc:'Encrypt any file with AES-256-GCM encryption.',accept:'*/*',multi:false,tips:['Use the exact same password to decrypt','Works on any file type','Output is a .enc file — keep the original filename'],opts:[{id:'mode',label:'Mode',type:'select',choices:['Encrypt file','Decrypt .enc file'],def:'Encrypt file'},{id:'password',label:'Password',type:'password',def:''}]},

  // ── MEDIA ──────────────────────────────────────────
  'ico-generator':{cat:'media',ic:'favicon',label:'Favicon Generator',desc:'Create multi-size PNG favicons and an ICO file.',accept:'image/*',multi:false,tips:['16, 32, 48px covers all browser needs','An HTML snippet is included to paste into your <head>','Start with a square, high-contrast image for best results'],opts:[{id:'sizes',label:'Sizes to Generate',type:'select',choices:['16, 32, 48px (standard)','16, 32, 48, 64, 128px (full set)','32px only'],def:'16, 32, 48px (standard)'}]},
  'svg-optimizer':{cat:'media',ic:'svgopt',label:'SVG Optimizer',desc:'Minify SVG files safely by removing redundant data.',accept:'.svg',multi:true,tips:['Can reduce SVG size by 40–70%','Removes comments, metadata and excess whitespace','Decimal rounding reduces precision safely'],opts:[{id:'removeComments',label:'Remove Comments',type:'toggle',def:true},{id:'removeMetadata',label:'Remove Metadata',type:'toggle',def:true},{id:'roundDecimals',label:'Round Decimals (2dp)',type:'toggle',def:true}]},
  'font-preview':{cat:'media',ic:'font',label:'Font Preview',desc:'Preview .ttf, .otf, .woff and .woff2 font files live.',accept:'.ttf,.otf,.woff,.woff2',multi:false,tips:['Renders font live in the browser','CSS @font-face snippet included','Export as PNG specimen sheet'],opts:[{id:'previewText',label:'Preview Text',type:'text',def:'The quick brown fox jumps over the lazy dog'},{id:'fontSize',label:'Preview Size',type:'range',min:12,max:80,step:2,def:36,unit:'px'}]},
  'video-thumbnail':{cat:'media',ic:'video',label:'Video Thumbnail',desc:'Extract a specific frame from a video as a JPG.',accept:'video/*',multi:false,tips:['Supports MP4, WebM, MOV and most formats','Seek to any timestamp in seconds'],opts:[{id:'time',label:'Timestamp (seconds)',type:'number',def:'3'},{id:'quality',label:'JPEG Quality',type:'range',min:50,max:100,step:1,def:92,unit:'%'}]},

  // ── DEVELOPER ─────────────────────────────────────────
  'qr-generator':{cat:'dev',ic:'qr',label:'QR Code Generator',desc:'Generate scannable QR codes from any URL or text.',accept:null,multi:false,tips:['Encodes URLs, Wi-Fi passwords, contact info','High error correction works even if QR is partially obscured','Download as PNG for print or digital use'],opts:[{id:'content',label:'Content',sub:'URL, text, Wi-Fi password, or any data',type:'text',def:'https://example.com'},{id:'size',label:'Image Size',type:'select',choices:['256×256','512×512','1024×1024'],def:'512×512'},{id:'errLevel',label:'Error Correction',type:'select',choices:['Low (7%)','Medium (15%)','High (30%)'],def:'Medium (15%)'}]},
  'timestamp':{cat:'dev',ic:'clock',label:'Timestamp Converter',desc:'Convert Unix timestamps to readable dates and vice versa.',accept:null,multi:false,tips:['Unix = seconds since Jan 1, 1970 UTC','JavaScript uses milliseconds (13-digit numbers)','Use the date picker in Date → Unix mode'],opts:[{id:'mode',label:'Mode',type:'select',choices:['Now (current timestamp)','Unix → Date (seconds)','Unix → Date (ms)','Date → Unix'],def:'Now (current timestamp)'},{id:'inputVal',label:'Unix Timestamp',sub:'Enter a Unix value here (seconds or ms)',type:'text',def:''},{id:'dateInput',label:'Date & Time',sub:'Pick a date/time for Date → Unix conversion',type:'datetime',def:''}]},
  'regex-tester':{cat:'dev',ic:'regex',label:'Regex Tester',desc:'Test regular expressions with live match highlighting.',accept:null,multi:false,tips:['Results update live as you type','Quick-insert common patterns below','g=global, i=ignore case, m=multiline flags'],opts:[{id:'pattern',label:'Pattern',sub:'Without slashes — updates live as you type',type:'text',def:'[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}'},{id:'flags',label:'Flags',type:'select',choices:['gi — global, ignore case','g — global','i — ignore case','gm — global, multiline'],def:'gi — global, ignore case'},{id:'testText',label:'Test Text',sub:'Type here — matches are highlighted instantly',type:'__ta__',def:'Test: user@example.com, admin@company.org, not-valid@'}]},
  'diff-checker':{cat:'dev',ic:'diff',label:'Diff Checker',desc:'Compare two text blocks and highlight all changes.',accept:null,multi:false,tips:['Green = added lines, Red = removed lines','Word-level changes shown on modified lines','Download a plain text diff report'],opts:[]},
  'url-parser':{cat:'dev',ic:'link',label:'URL Parser',desc:'Parse URL into protocol, host, path, query, and hash.',accept:null,multi:false,tips:['Quick query breakdown'],opts:[{id:'inputText',label:'URL',type:'text',def:'https://example.com/a?x=1#top'}]},
  'url-decoder':{cat:'dev',ic:'link',label:'URL Decoder',desc:'Decode percent-encoded URL content.',accept:null,multi:false,tips:['Converts %XX escapes'],opts:[{id:'inputText',label:'Encoded URL',type:'__ta__',def:''}]},
  'slug-generator':{cat:'dev',ic:'text',label:'Slug Generator',desc:'Generate SEO-friendly slug from text.',accept:null,multi:false,tips:['lowercase-hyphen-format'],opts:[{id:'inputText',label:'Input Text',type:'text',def:''}]},
  'my-user-agent':{cat:'dev',ic:'info',label:'My User Agent',desc:'Display the current browser user agent string.',accept:null,multi:false,tips:['Useful for debugging'],opts:[]},
  'my-ip':{cat:'dev',ic:'globe',label:'My IP',desc:'Fetch and display your public IP address.',accept:null,multi:false,tips:['Requires internet access'],opts:[]},
  'keyboard-test':{cat:'dev',ic:'text',label:'Keyboard Testing',desc:'Live key press tester for Windows & Mac keyboards.',accept:null,multi:false,tips:['Press any key to see key/code'],opts:[]},
  'touchpad-test':{cat:'dev',ic:'text',label:'Touch Pad Testing',desc:'Pointer movement/click tester for touchpads.',accept:null,multi:false,tips:['Move/click in test area'],opts:[]},

  // ── UTILITIES ─────────────────────────────────────────
  'pdf-text':{cat:'util',ic:'text',label:'Extract PDF Text',desc:'Pull all readable text from any text-based PDF.',accept:'.pdf',multi:false,tips:['Only works on text-based PDFs (not scanned)','Add page separators to identify page breaks'],opts:[{id:'fmt',label:'Output Format',type:'select',choices:['Plain Text (.txt)','Markdown (.md)'],def:'Plain Text (.txt)'},{id:'pagebreaks',label:'Add Page Separators',type:'toggle',def:true}]},
  'bulk-rename':{cat:'util',ic:'rename',label:'Bulk Rename',desc:'Rename multiple files with a prefix and sequential numbers.',accept:'*/*',multi:true,tips:['Files are packed into a ZIP with new names','Original files are never modified'],opts:[{id:'prefix',label:'Filename Prefix',type:'text',def:'Document_'},{id:'start',label:'Start Number',type:'number',def:'1'},{id:'pad',label:'Number Format',type:'select',choices:['001 (3 digits)','01 (2 digits)','1 (no padding)'],def:'001 (3 digits)'}]},
  'img-to-portfolio':{cat:'util',ic:'portfolio',label:'Image Portfolio',desc:'Combine images into a titled, cover-paged PDF portfolio.',accept:'image/*',multi:true,tips:['A professional cover page is added automatically','Each image fills one page'],opts:[{id:'title',label:'Portfolio Title',type:'text',def:'Image Portfolio'},{id:'author',label:'Prepared By',type:'text',def:''},{id:'pagesize',label:'Page Size',type:'select',choices:['A4 Portrait','A4 Landscape','Letter Portrait'],def:'A4 Portrait'}]},
  'word-counter':{cat:'util',ic:'wordcount',label:'Word Counter',desc:'Count words, characters, sentences and estimated reading time. Supports TXT, MD, PDF and DOCX.',accept:'.txt,.md,.pdf,.csv,.docx,.doc',multi:false,tips:['Works with TXT, Markdown, PDF and DOCX files','Shows reading and speaking time estimates','Reports unique word count and average word length'],opts:[]},
  'csv-to-pdf':{cat:'util',ic:'csv',label:'CSV → PDF Table',desc:'Convert CSV data into a clean, formatted PDF table.',accept:'.csv',multi:false,tips:['First row is treated as the table header','Alternating row colours for readability'],opts:[{id:'title',label:'Report Title',type:'text',def:'Data Report'},{id:'fontsize',label:'Font Size',type:'select',choices:['8pt — Very compact','10pt — Compact','12pt — Normal'],def:'10pt — Compact'}]},
  'base64-tool':{cat:'util',ic:'base64',label:'Base64 Encoder',desc:'Encode any file to Base64 text or decode Base64 back to a file.',accept:'*/*',multi:false,tips:['Common in APIs, emails and data URIs','Output is a plain text file with Base64 content'],opts:[{id:'mode',label:'Mode',type:'select',choices:['Encode file → Base64','Decode Base64 → file'],def:'Encode file → Base64'}]},
  'html-encode':{cat:'util',ic:'html',label:'HTML Encoder',desc:'Encode text for safe HTML rendering.',accept:null,multi:false,tips:['Escapes special chars'],opts:[{id:'inputText',label:'Input',type:'__ta__',def:''}]},
  'html-decode':{cat:'util',ic:'html',label:'HTML Decoder',desc:'Decode HTML entities into plain text.',accept:null,multi:false,tips:['Converts &amp; etc.'],opts:[{id:'inputText',label:'Input',type:'__ta__',def:''}]},
  'html-stripper':{cat:'util',ic:'html',label:'HTML Stripper',desc:'Strip HTML tags and keep plain text.',accept:null,multi:false,tips:['Removes markup only'],opts:[{id:'inputText',label:'Input HTML',type:'__ta__',def:''}]},
  'base32-encoder':{cat:'util',ic:'base64',label:'Base32 Encoder',desc:'Encode text as Base32.',accept:null,multi:false,tips:['RFC4648 alphabet'],opts:[{id:'inputText',label:'Input',type:'__ta__',def:''}]},
  'base32-decoder':{cat:'util',ic:'base64',label:'Base32 Decoder',desc:'Decode Base32 text.',accept:null,multi:false,tips:['Accepts padded input'],opts:[{id:'inputText',label:'Input',type:'__ta__',def:''}]},
  'passphrase-generator':{cat:'util',ic:'password',label:'Passphrase Generator',desc:'Generate memorable, strong passphrases from a 200+ word pool.',accept:null,multi:false,tips:['4+ words is strong enough for most accounts','Use a separator like - or . for readability','Capitalize first letter for extra strength','Generate multiple and pick your favourite'],opts:[{id:'count',label:'Words per Phrase',type:'range',min:2,max:8,step:1,def:4,unit:' words'},{id:'num',label:'How Many to Generate',type:'range',min:1,max:20,step:1,def:5,unit:''},{id:'sep',label:'Separator',type:'select',choices:['-','.','+','_','~','(space)'],def:'-'},{id:'cap',label:'Capitalize Words',type:'toggle',def:false}]},
  'pin-generator':{cat:'util',ic:'password',label:'PIN Generator',desc:'Generate secure random PINs of any length, with copy buttons for each.',accept:null,multi:false,tips:['4–6 digits for most ATM/phone uses','8–12 digits for high-security applications','Group by 4 makes long PINs easier to read'],opts:[{id:'digits',label:'Digits',type:'range',min:4,max:12,step:1,def:6,unit:' digits'},{id:'count',label:'How Many to Generate',type:'range',min:1,max:50,step:1,def:10,unit:''},{id:'groups',label:'Group by 4 digits',type:'toggle',def:false}]},
  'utm-builder':{cat:'dev',ic:'globe',label:'UTM Builder',desc:'Build campaign-tracking URLs with UTM parameters.',accept:null,multi:false,tips:['Use consistent naming across campaigns','Auto URL encoding is applied'],opts:[{id:'utmBase',label:'Base URL',type:'text',def:'https://example.com/landing'},{id:'utmSource',label:'utm_source',type:'text',def:''},{id:'utmMedium',label:'utm_medium',type:'text',def:''},{id:'utmCampaign',label:'utm_campaign',type:'text',def:''},{id:'utmTerm',label:'utm_term (optional)',type:'text',def:''},{id:'utmContent',label:'utm_content (optional)',type:'text',def:''}]},
  'translate-text':{cat:'dev',ic:'text',label:'Multi-language Translate',desc:'Translate text between major languages using AI. Fast, accurate, no sign-up required.',accept:null,multi:false,tips:['Supports 10+ languages including Chinese, Japanese, Arabic','AI-powered — requires internet connection','Output is copied to clipboard and downloadable'],opts:[{id:'trSource',label:'Source Language',type:'select',choices:['Auto','English','Chinese (Simplified)','Chinese (Traditional)','Japanese','Korean','Spanish','French','German','Portuguese','Arabic'],def:'Auto'},{id:'trTarget',label:'Target Language',type:'select',choices:['English','Chinese (Simplified)','Chinese (Traditional)','Japanese','Korean','Spanish','French','German','Portuguese','Arabic'],def:'Spanish'},{id:'trText',label:'Input Text',type:'__ta__',def:''}]},
};

const GRIDS = {
  pdf:   ['compress-pdf','merge-pdf','split-pdf','rotate-pdf','pdf-to-jpg','jpg-to-pdf','unlock-pdf','protect-pdf','add-page-numbers','stamp-pdf','pdf-info','delete-pdf-pages','duplicate-pdf-pages','reorder-pdf','pdf-header-footer','flatten-pdf','pdf-thumbnail','pdf-to-csv','pdf-bookmarks','pdf-to-word','word-to-pdf','ocr-pdf'],
  img:   ['compress-image','resize-image','crop-image','convert-to-jpg','convert-from-jpg','grayscale','watermark-image','flip-image','image-borders','round-corners','blur-image','exif-tool','colour-palette','image-collage','image-info','sprite-sheet'],
  text:  ['text-case','lorem-ipsum','find-replace','json-formatter','xml-formatter','csv-json','html-to-pdf','html-preview','invoice-generator','meeting-minutes','line-sorter','whitespace-remover','text-to-hex','hex-to-text'],
  sec:   ['password-gen','uuid-gen','file-hash','url-tool','text-encrypt','barcode-gen','metadata-scrubber','file-encrypt'],
  media: ['ico-generator','svg-optimizer','font-preview','video-thumbnail'],
  dev:   ['qr-generator','timestamp','regex-tester','diff-checker','utm-builder','translate-text','url-parser','url-decoder','slug-generator','my-user-agent','my-ip','keyboard-test','touchpad-test'],
  util:  ['pdf-text','bulk-rename','img-to-portfolio','word-counter','csv-to-pdf','base64-tool','html-encode','html-decode','html-stripper','base32-encoder','base32-decoder','passphrase-generator','pin-generator'],
};

const NEW_TOOLS = new Set(['html-preview','diff-checker','barcode-gen','file-encrypt','metadata-scrubber','sprite-sheet','image-collage','blur-image','round-corners','colour-palette','uuid-gen']);
const NO_FILE   = new Set(['text-case','lorem-ipsum','url-tool','text-encrypt','password-gen','uuid-gen','timestamp','regex-tester','diff-checker','invoice-generator','meeting-minutes','barcode-gen','qr-generator','html-preview','utm-builder','translate-text','line-sorter','whitespace-remover','text-to-hex','hex-to-text','url-parser','url-decoder','slug-generator','my-user-agent','my-ip','keyboard-test','touchpad-test','html-encode','html-decode','html-stripper','base32-encoder','base32-decoder','passphrase-generator','pin-generator']);
// CAT must live here — tools.js runs before app.js
const CAT = {
  pdf:  { bg:'rgba(255,92,92,.15)',   fg:'#ff5c5c', cls:'cpdf'   },
  img:  { bg:'rgba(255,159,67,.15)',  fg:'#ff9f43', cls:'cimg'   },
  text: { bg:'rgba(124,111,255,.15)', fg:'#7c6fff', cls:'ctext'  },
  sec:  { bg:'rgba(84,160,255,.15)',  fg:'#54a0ff', cls:'csec'   },
  media:{ bg:'rgba(31,204,170,.15)',  fg:'#1fccaa', cls:'cmedia' },
  dev:  { bg:'rgba(255,210,42,.15)',  fg:'#ffd32a', cls:'cdev'   },
  util: { bg:'rgba(124,111,255,.15)', fg:'#7c6fff', cls:'cutil'  },
};

function buildCard(id) {
  const t = TOOLS[id]; if (!t) return '';
  const c = CAT[t.cat] || CAT.util;
  const svg = IC[t.ic] || IC.pdf;
  return `<div class="tc" onclick="openTool('${id}')" data-label="${t.label.toLowerCase()}" data-desc="${t.desc.toLowerCase()}" data-cat="${t.cat}">
    <div class="tc-top">
      <div class="tc-ic ${c.cls}" style="background:${c.bg};color:${c.fg}">${svg}</div>
      ${NEW_TOOLS.has(id) ? '<span class="tc-new">New</span>' : ''}
    </div>
    <h3>${t.label}</h3>
    <p>${t.desc}</p>
  </div>`;
}

// Defer grid build until DOM is ready
document.addEventListener('DOMContentLoaded', () => {
  Object.entries(GRIDS).forEach(([cat, ids]) => {
    const el = document.getElementById('grid-' + cat);
    if (el) el.innerHTML = ids.map(buildCard).join('');
  });
});