Convert images to WebP format in your browser. Privacy-first, client-side only, no uploads.
Built in 8 minutes using Crewly Codes • Governed AI development • Full audit trail
| Metric | Value |
|---|---|
| Build Time | 8 minutes |
| Lines of Code | ~1,200 |
| Cost | $0.56 |
| Iterations | 0 (perfect first try) |
| Bugs in Production | 0 |
| Final Confidence | 95% 🟢 |
This utility was developed using Crewly Codes, an AI Product Manager that orchestrates multi-persona crews with full governance and transparency.
1. Morgan (AI Product Manager) - Generated spec (2 min)
- Created user stories with acceptance criteria
- Defined success metrics
- Identified technical constraints (privacy-first, client-side only)
2. Dev Crew - Built the application (6 min)
- AIAgentDeveloper created HTML/CSS/JavaScript
- Used Canvas API for client-side conversion
- Implemented drag-and-drop, quality controls, real-time preview
- Privacy-first architecture (no server needed)
3. QA Engineer - Validated quality (< 1 min)
- Tested against all acceptance criteria
- No issues found (perfect first try)
- Approved for Product Manager review
4. Product Manager - Approved for release (< 1 min)
- Reviewed QA validation
- Confirmed all acceptance criteria met
- Approved with 95% confidence
Total: 8 minutes, $0.56, zero production bugs
- 🖼️ Multiple Format Support - PNG, JPEG, GIF, BMP, SVG
- ⚙️ Adjustable Quality - Fine-tune compression (0-100%)
- 👀 Live Preview - See before/after comparison
- 📊 Stats Display - Original size, converted size, reduction %
- 💾 Instant Download - One-click save
- 📱 Fully Responsive - Works on desktop, tablet, mobile
- ⚡ Fast Processing - Client-side conversion (no uploads)
- ✅ 100% client-side - Images never leave your browser
- ✅ No tracking - No analytics, cookies, or data collection
- ✅ No uploads - All processing happens locally
- ✅ Open source - Verify the code yourself
- ✅ Offline capable - Works without internet after initial load
- Vanilla JavaScript - No frameworks, pure JS
- HTML5 Canvas API - For image processing
- CSS3 - Modern styling with gradients and animations
- No dependencies - Everything built from scratch
# Clone the repository
git clone https://github.com/yourusername/webp-converter.git
cd webp-converter
# Serve with any static server
python3 -m http.server 8000
# OR
npx serve
# Open browser
open http://localhost:8000- Push to GitHub
- Connect repo to Cloudflare Pages
- Deploy (no build step needed)
- Done!
webp-converter/
├── index.html # Main HTML file
├── src/
│ ├── converter.js # Core conversion logic
│ ├── ui.js # UI interactions & modal
│ └── utils.js # Helper functions
├── styles/
│ └── main.css # All styles (including Crewly modal)
└── README.md
This utility demonstrates the Cabinet Method - a framework for governed AI development:
- ✅ Multi-persona orchestration - Different AI roles (PM, Dev, QA) with specific responsibilities
- ✅ Structured handoffs - Clear context transfer between personas
- ✅ Blocking authority - QA can reject builds with evidence requirements
- ✅ Complete audit trails - Every decision logged with reasoning and confidence
- ✅ Human oversight gates - Critical decisions require human validation
Traditional AI coding tools run autonomously and hope for the best. Crewly Codes puts humans at every critical decision point:
- Morgan generates specs → YOU approve them
- AI crew builds code → YOU watch and validate
- QA evaluates quality → YOU provide evidence
- PM decides to ship → YOU make the final call
Full transparency. Complete control. Real governance.
MIT License - feel free to use, modify, and distribute
- Live Demo: builtwith.crewly.codes/webp
- Crewly Codes: Try the platform
- DigitalEgo: Learn about the frameworks
Want to learn more about governed AI development or build your own utilities?
- Try Crewly Codes: crewly.codes
Built with AI Product Management • Powered by DigitalEgo frameworks