To manage the permissions of a given site, you can visit it and click on the icons at the left of the address bar.
For all sites? You may be interested in
https://addons.mozilla.org/firefox/downloads/file/3046259/canvasblocker-0.5.11-an+fx.xpi
(there exist other addons for the same purpose).
- [Trisquel-users] Amazon force HMTL5 canvas accept Abrowser 5circles
- Re: [Trisquel-users] Amazon force HMTL5 canvas accept ... 5circles
- [Trisquel-users] Re : Amazon force HMTL5 canvas ac... lcerf
- Re: [Trisquel-users] Amazon force HMTL5 canvas accept ... jcmartinez2129
- Re: [Trisquel-users] Amazon force HMTL5 canvas accept ... 5circles
