Not the mainstream privacy-focused tools like AdGuard, uBlock Origin or Ghostery, but the others having audiences numbering in the millions

That is why transparency should be one of the first things users evaluate before installing any browser extension.

Streaming related extensions under the "dogooodapp" brand

Before installing an extension, it’s worth running through a quick checklist:

• search in the privacy policy for phrases like:
  • “may share”
  • “business partners”
  • “analytics purposes”
  • “commercial purposes”
  • “affiliates and third parties”
• Be wary of extensions with no privacy policy at all
• Check who developed the extension
• Read reviews critically
• Avoid installing unnecessary extensions entirely
• Go for well-established open-source privacy tools when possible

It's there if needed. A WebUSB implementation via native messaging.

This project looks really good. It saves a webpage into a single .html file. It's portable, easy to use and perfect for backups.

See https://www.getsinglefile.com/

There is also a cli version of it: https://github.com/gildas-lormeau/single-file-cli

Now with Firefox support

• Copy and paste blocked?
• Contextual menu blocked?
• Keyboard shortcuts blocked?
• Autoplaying videos?
• URL tracking parameters?

L'extension signale les sites générés par IA, ainsi que les "noms de domaine proche visuellement (la proximité visuelle est obtenue par le fait que de nombreux systèmes d'écriture utilisent des caractères se ressemblant) d'un autre nom de domaine connu ».

This add-on shows with a colored icon, whether the SSL/TLS certificate currently used by the website for is classified as trustworthy by Mozilla or only by the local computer. Helps to identify proxies.

green shield for Mozilla certificates
bleu shield for other certificates

(via https://sebsauvage.net/links/?jrQ5jA)

Check the DNS supports DNSSEC or DANE

Source: https://codeberg.org/Seb35/DNSSEC-DANE_Padlock

Focus2console is a Firefox extension to display the tag and its attributes in the browser console. This can be useful in case of loss of focus (due to CSS or JS).

Redirect some websites to website proxies (Invidious for Youtube).

A web extension that redirects YouTube, Instagram, Reddit, TikTok and other websites to alternative privacy-friendly frontends.

Un outil listant les sites générés par IA, afin de passer outre les fake news.

L'extension alert alors si la navigateur est sur un de ces sites.

Pour Firefox https://addons.mozilla.org/fr/firefox/addon/alerte-sur-les-sites-genai/

[edit]
Suite de cette extension en août 2025: https://next.ink/195816/alerte-sur-les-sites-genai-notre-extension-signale-plus-de-6-000-sites-et-passe-en-v2-3/

A Firefox extension to prevent sites from blocking copy/paste, for example :

• to prevent you from copying part of the text on a page.
• to prevent you from pasting your email address in the email confirmation field.
• to prevent you from pasting a password.

(via https://sebsauvage.net/links/?gzzAqw)

Add a grid on a view. It can be useful to debug and design.