Jefferson Scher

dont-accept-webp. Don't "Accept" image/webP - extension for Firefox

Save-webP-as-extension. Firefox extension to overlay format and JPEG quality buttons on inline or stand-alone images for quickly saving a converted version of the image.

Firefox-File-Utilities. Mozilla LZ4 File Decryption and Mining Tools

Ctrl-Shift-C-Should-Copy. Potential Firefox extension to intercept Ctrl+Shift+C, block opening developer tools, and copy the selection to the clipboard.

Content-Type-Fixer-extension. Firefox extension to override dumb Content-Type headers with correct values

scrounger. Session History Scrounger for Firefox

View-Image-Info-Reborn-for-Firefox. Firefox extension to restore View Image Info functionality to the right-click context menu

switch-to-previous-active-tab. Firefox toolbar button to switch to the last accessed tab (and MRU popup)

Hotkeys-to-Switch-Tabs-Left-and-Right. Firefox extension to allow additional keyboard shortcuts to navigate left and rights among your tabs.

cache-favicons-for-bookmarks-extension. Firefox extension to Cache Favicons for Bookmarks

userchrome-dot-org. Site dedicated to the userChrome.css file

printable-print-doctor-extension. Firefox extension to tweak print styles to work around printing problems

No-Cache-No-Store-Extension. Bypass Firefox's aggressive caching of CSS (and optionally other content) during development. Use the button on the Page Actions menu to grant new host permissions for blocking.

copy-frame-or-page-url. Copy Frame or Page URL Extension for Firefox

Remove-DNT-Do-Not-Track-Header. Firefox extension for people concerned about fingerprintability.

I-Hate-Tabs---SDI-extension. Automatically convert new Firefox tabs to separate windows

De-Troll-YouTube---Hide-Unwanted-Commenters. For firefox: Right-click a comment (or reply) to hide the commenter using their channel ID. Not an official YouTube extension.

google-analytics-cookie-consent. Add a Google Analytics cookie opt-in feature to your site

google-uk-search. XPI-style OpenSearch plugin for google.co.uk

Show-History-Frequent-Sites-button-extension. Replacement for Firefox "Show History" button to list frequent sites.

save-to-pdf-now. Firefox extension to call Firefox's built-in Save to PDF feature using a toolbar button, keyboard shortcut, or the right-click context menu -- and skip the preview.

change-maximized-to-resizable. Firefox Extension to Change Maximized New Window to Resizable

move-active-tab-to-last-extension. Firefox extension to automatically move the active tab to last position on the tab bar upon activation

Prevent-Closing-Window. Firefox extension to display the "Leave Page" prompt to avoid accidentally closing the current window.

window-title-preface. Firefox extension: If you organize windows by topic, you may want to add a preface to the title bar for easier spotting.

firefox-window-autonumber. Add-on to auto-number windows to help maintain a stable menu order on Mac OS (Fx108+ issue)

My-SuMo-Questions. Page that polls Mozilla Support API for updates to threads you've participated in

Outlook-Mail-mailto-and-Email-Link-Fix. Firefox extension to add a right-click context menu item to compose a new message on Outlook webmail. Not an official Microsoft add-on.

startpage-post-search. XPI-style OpenSearch plugin for startpage.com using POST

moz-extension-UUID-Randomizer. Firefox extension to log and randomize moz-extension:// origin and referer headers.

open-tab-adjacent-extension. Open Link in Immediately Adjacent Tab extension for Firefox