NewsAnchor

Economic announcements, anchored to the asset you're charting.

A minimal Chrome extension that floats a draggable popup over TradingView and shows the upcoming Forex Factory events relevant to whatever symbol is on your screen — forex pairs, indices, commodities, crypto and stocks.

➜ Install on the Chrome Web Store

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Features

• Asset-aware filtering — the popup resolves the TradingView ticker on the page and only shows events that move that market:
  • Forex pairs → both legs (EURUSD → EUR + USD)
  • Currency indices → the index's base currency (DXY → USD, EXY → EUR, JXY → JPY, BXY → GBP, CXY → CAD, AXY → AUD, SXY → CHF, ZXY → NZD)
  • Stock indices → country currency (DAX → EUR, NAS100 → USD, JP225 → JPY, HSI → CNY, BEL20 → EUR, TOPIX → JPY)
  • Commodities → USD (XAUUSD, USOIL, XAGUSD, NATGAS, …)
  • Crypto → USD macro (BTCUSDT, ETHUSD, SOLUSDT, …)
  • Stocks → exchange currency (NASDAQ:AAPL → USD, TSX:SHOP → CAD, LSE:HSBA → GBP, XETR:SAP → EUR)
• Live ticker tracking — patched history.pushState, a title observer, a legend MutationObserver and a 1 Hz fallback keep the popup in sync even when you switch symbols via the watchlist.
• Draggable, resizable, minimizable — the entire popup is freely positioned and persisted across reloads. Double-click the top strip to collapse to a tiny dock.
• Today, distinct — today's events sit in a full-bleed blue card with a solid left accent bar. Tomorrow gets its own subdued label; later days fade further.
• Real settings — gear icon opens a panel with:
  • Impact filter pills (High / Medium / Low / Holiday)
  • Text size (S / M / L) — every element scales from a single root size
  • Opacity slider (40–100 %) so the popup can blend over the chart
• Click-through to source — every event row links to its Forex Factory page; middle-click opens in a new tab.
• Hover-revealed chrome — the gear, refresh and close icons stay invisible until you hover the popup, so the resting state is just data.
• Cooldown-aware refresh — clicking ↻ during the 30 s post-fetch cooldown returns cached data with a soft Calendar up to date toast, never re-hitting the Forex Factory CDN.
• Self-contained typography — Inter (Regular + SemiBold, latin subset, ~44 KB total) ships inside the extension. Identical rendering on Mac / Windows / Linux.

Install

Chrome Web Store · recommended

➜ Install NewsAnchor

One click, no developer mode, auto-updates.

From a release asset

Download newsanchor-v0.3.1.zip from the Releases page, unzip, then:

1. Open chrome://extensions/, toggle Developer mode (top-right).
2. Click Load unpacked and pick the unzipped folder.
3. Open any TradingView chart — the popup appears in the top-right corner.

From source (developer mode)

git clone https://github.com/flocom/NewsAnchor.git

Then follow steps 1–3 above, picking the cloned folder.

How it works

┌──────────────────────┐         ┌───────────────────┐
│  Forex Factory XML   │  hourly │  Service worker   │
│  (US Eastern, DST)   │  ──────▶│  fetch + parse +  │
└──────────────────────┘         │  cache in storage │
                                 └─────────┬─────────┘
                                           │  storage.onChanged
                                           ▼
┌──────────────────────┐         ┌───────────────────┐
│  TradingView chart   │   live  │   Content script  │
│  (symbol watcher)    │  ──────▶│   filter + render │
└──────────────────────┘         │   draggable popup │
                                 └───────────────────┘

• The service worker fetches ff_calendar_thisweek.xml once an hour through chrome.alarms, with single-flight deduplication and a single retry on transient errors.
• Times in the XML are US Eastern (with DST). The service worker converts each event to a UTC epoch so the content script can render in your browser's local timezone (the TZ abbreviation appears in the refresh tooltip).
• The content script resolves the TradingView symbol from the URL first (?symbol=…), then from explicit data attributes ([data-symbol-short]), then from the chart legend with icon nodes stripped, then from the document title. A small recovery step strips a stray leading character if the resolution falls through to a generic stock (this fixes cases like EGBPAUD → GBPAUD).
• Symbol resolution maps the ticker to the relevant Forex Factory country codes; the floating popup filters and groups by day.

Permissions & privacy

Permission	Why
storage	Persist popup position, size, opacity, text size, filters and the cached event list (all local; never sent anywhere).
alarms	Schedule the hourly background refresh.
activeTab	Required so clicking the toolbar icon can message the content script to toggle the popup on the current TradingView tab.
host: nfs.faireconomy.media	Fetch the Forex Factory weekly XML feed.
content_scripts: tradingview.com	Inject the popup on TradingView pages.

No analytics, no telemetry, no third-party calls beyond the single XML endpoint above. Nothing leaves your browser apart from the GET request to Forex Factory's static feed.

Repo layout

manifest.json          MV3 manifest
background.js          Service worker: fetch + parse + cache + icon toggle
content/
  symbol-map.js        Ticker → currencies resolver (forex, indices, …)
  content.js           UI mount, symbol watcher, popup logic, font loader
  popup.css            Floating popup styles (Inter, em-based scaling)
fonts/                 Inter Regular + SemiBold, latin subset (WOFF2)
icons/                 16 / 48 / 128 PNG icons

No build step. Edit the files, click Reload in chrome://extensions/.

Store assets

The Chrome Web Store promotional images and screenshots live in promo/. They're generated programmatically with PIL from promo/gen_promo.py so they stay in sync with the real popup design.

File	Size	Purpose
promo-small-440x280.png	440 × 280	CWS small promo tile
promo-large-1400x560.png	1400 × 560	CWS marquee / large promo tile
screenshot-1-hero-1280x800.png	1280 × 800	Hero: popup over a forex chart
screenshot-2-settings-1280x800.png	1280 × 800	Settings panel (filters, text size, opacity)
screenshot-3-hover-1280x800.png	1280 × 800	Hover state — actions reveal

Regenerate with python3 promo/gen_promo.py (requires PIL and the Inter TTF files at /tmp/inter_ttf/extras/ttf/).

Building the Chrome Web Store package

zip -r dist/newsanchor-v0.3.1.zip \
  manifest.json background.js content fonts icons LICENSE \
  -x "*.DS_Store"

The resulting archive (~95 KB) is what gets uploaded to the Chrome Web Store developer dashboard.

License

MIT — see LICENSE.