How can I scan barcodes on webpages in Firefox for Android? Using Firefox for Android, I occasionally find web pages containing barcode images (or photos containing barcodes) that I would like to scan.

I could save the image, switch to a barcode app, open and scan the image there, and probably end up relaunching the browser to see the result, but I'd prefer to long hold the image and launch the scanning app directly (with no save step required).

Is there an open source extension (Android app, Firefox add-on, Firefox app) that can achieve this? I've tried looking on the Firefox add-ons and apps marketplaces with no luck.

Example images:


f-droid.org (rendered image, imperfect QR code)
cryptojunky.com (photo, imperfect QR code)
wikimedia.org (rendered Aztec code)
In Firefox for android you can long press the image and select share. From there just choose "decode QR code".
Make sure you first install the program "QR droid". 
https://play.google.com/store/apps/details?id=la.droid.qr