Browser extension that shows current tab url + all highlighted tabs as QR code images using pageAction (on Firefox) and browserAction (on Chromium-based).

• Get the add-on for Firefox, Opera (other browsers, see Local debugging below).

• Run nodemon --watch popup-nayuki -e html,css,js,json build.js (make sure to have nodemon installed globally with npm install --g nodemon)
  • nodemon --watch popup-nayuki -e html,css,js,json build.js --firefox
  • nodemon --watch popup-nayuki -e html,css,js,json build.js --chrome

Enter about:debugging in the address bar on Firefox 45+, click on Load Temporary Add-on, select and open the manifest.json on dist/firefox. After each code change, it needs to be reloaded on the about:debugging page using the Reload link underneath the respective Temporary Extensions entry. Local debugging add-ons last as long as the current browser session.

To test i18n, download and set language packs on Options/Preferences -> General -> Language (may need to restart the browser and reset browser cache), if it does not work, the about:config "forced" method with option intl.locale.requested might work (see ref.).

Enter chrome:https://extensions/ in the address bar on any Chromium-based browser, click on Load unpacked, select the chrome folder on dist and confirm. On all Chromium-based browsers (tested with Chromium, Brave and Edge), the change on extension files during development will automatically propagate (no need to reload the extension each change like in Firefox). Unpacked extensions will stay installed through browser sessions.

To test i18n, enter chrome:https://settings/languages in the address bar, in the section Preferred languages click on Add languages if they are not on the list. After finding the desired language, click on the three dots in front of it and check Display __BROWSER__ in this language. By default, the browser uses language preferences from the OS.

• Run node build.js --firefox to copy all files needed for the extension to a dist/firefox folder.
• Enter dist/firefox folder and add all files to a zip (do not zip firefox folder directly, the manifest.json file should be at the root when unzipped).
• Go to Mozilla Add-on Developer Hub extension configs to Submit a New Version and follow the instructions on the page.

• Run node build.js --chrome to copy all files needed for the extension to a dist/chrome folder.
• Enter dist/chrome folder and add all files to a zip (do not zip chrome folder directly, the manifest.json file should be at the root when unzipped).
• NOTE: since Chrome Web Store no longer accepts Manifest V2 extensions, it will not be published on Chrome Web Store. It will stay on Manifest V2 for now and I have no intention to port it to Manifest V3 at the moment.
• TODO: publish steps for Opera Add-on.
• TODO: publish steps for Edge Add-on.

• https://github.com/tsl143/tutorials
• https://www.youtube.com/watch?v=RBI-j8USuJs
• https://activate.mozilla.community/webextensions/
• https://github.com/mdn/webextensions-examples

• Publish add-on (Firefox): http:https://trishulgoel.com/how-to-publish-addon-on-addons-mozilla-org-aka-amo/
• WebExtensions API pageAction: https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/pageAction
• WebExtensions API tabs: https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/tabs/onUpdated