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Ole-Morten Duesund 8fa1809d9d Initial commit: Share-as-QR Firefox extension with bun build 
MV3 WebExtension that turns the active tab's URL into a scannable QR
code via a toolbar popup. The popup runs locally — no network requests.

Build pipeline: `bun build` bundles popup.js + the vendored
kazuhikoarase/qrcode-generator (MIT, pinned to 83b7e8f) into a single
~23 KB minified ESM file under dist/. web-ext operates on dist/, so
the packaged zip contains only what actually ships (~28 KB).

Scripts:
- bun run build    — bundle + copy assets into dist/
- bun run lint     — build + web-ext lint (0 errors / 0 warnings)
- bun run package  — build + produce a signable .zip
- bun run start    — build + launch Firefox with the extension loaded

Tracks dogcat epic firefox-share-as-qr-35mw and its 5 child tasks
(scaffold, vendor lib, popup UI, icons, README).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-11 16:04:22 +02:00
.dogcats Initial commit: Share-as-QR Firefox extension with bun build 2026-05-11 16:04:22 +02:00
icons Initial commit: Share-as-QR Firefox extension with bun build 2026-05-11 16:04:22 +02:00
popup Initial commit: Share-as-QR Firefox extension with bun build 2026-05-11 16:04:22 +02:00
scripts Initial commit: Share-as-QR Firefox extension with bun build 2026-05-11 16:04:22 +02:00
vendor Initial commit: Share-as-QR Firefox extension with bun build 2026-05-11 16:04:22 +02:00
.gitattributes Initial commit: Share-as-QR Firefox extension with bun build 2026-05-11 16:04:22 +02:00
.gitignore Initial commit: Share-as-QR Firefox extension with bun build 2026-05-11 16:04:22 +02:00
AGENTS.md Initial commit: Share-as-QR Firefox extension with bun build 2026-05-11 16:04:22 +02:00
manifest.json Initial commit: Share-as-QR Firefox extension with bun build 2026-05-11 16:04:22 +02:00
package.json Initial commit: Share-as-QR Firefox extension with bun build 2026-05-11 16:04:22 +02:00
README.md Initial commit: Share-as-QR Firefox extension with bun build 2026-05-11 16:04:22 +02:00
web-ext-config.cjs Initial commit: Share-as-QR Firefox extension with bun build 2026-05-11 16:04:22 +02:00

README.md

Share as QR

A small Firefox extension that turns the current tab's URL into a scannable QR code, so you can hand a page off to a phone (or another machine) without typing.

Click the toolbar icon → a popup shows the QR code plus a "Copy URL" button. Nothing leaves your browser.

Develop

This project uses bun as both the script runner and the bundler. popup/popup.js imports the vendored QR library; bun build inlines it into a single ESM file under dist/. Firefox loads the extension from dist/, never from the source tree directly.

bun run build      # bundle popup.js + assets into dist/
bun run lint       # build + web-ext lint
bun run package    # build + produce a signable .zip in web-ext-artifacts/
bun run start      # build + launch Firefox with the extension loaded

To load the extension manually after a build:

  1. Open about:debugging#/runtime/this-firefox in Firefox 142 or newer.
  2. Click Load Temporary Add-on… and pick dist/manifest.json.

The temporary install is wiped when Firefox restarts; reload it the same way during dev.

Privacy

The extension makes no network requests. The QR code is generated locally in the popup using the bundled vendor/qrcode.js library. The browser_specific_settings.gecko.data_collection_permissions field in the manifest declares "none" accordingly.

Permissions used:

  • activeTab — read the active tab's URL when the popup opens.
  • clipboardWrite — used by the Copy URL button.

Browser-internal URLs (about:, chrome:, view-source:, moz-extension:, data:, javascript:, resource:) are not QR-encoded — the popup shows a friendly message instead.

Third-party code

  • vendor/qrcode.js — kazuhikoarase/qrcode-generator, pinned to commit 83b7e8fe3fddd3b0368dbafd6ce56995bd25e3c8. MIT licensed; full license text in vendor/LICENSE.qrcode-generator (also copied into dist/ so it ships with every build).

Project layout

manifest.json          MV3 manifest
popup/                 Toolbar popup source (HTML/CSS/JS)
vendor/qrcode.js       Bundled QR encoder (MIT, vendored, imported by popup.js)
icons/icon.svg         Toolbar icon (single SVG, used at every size)
scripts/build.mjs      Bun build + asset copy → dist/
web-ext-config.cjs     Tells web-ext to operate on dist/
dist/                  Build output (gitignored). What ships.