img2tab is a fork of the Firefox XUL extension img2tab which is no longer supported.

The userscript finds all linked images and videos (jpg, png, gif, webm, mp4) and displays them in a vertical lightbox.

• jump to previous or next image with left or right arrow key respectively.
• no pagination load times - everything is loaded as soon as the gallery opens.
• customizable - works on 4chan, 420chan, 8chan (infinitychan), and local file:/// URLs. Can be easily extended to work on many websites.

4chan thread gallery with fit-width lightbox

reading comics from file:///