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List of Free and Useful Browser Extensions: Scripts, Translation, Passwords, Speed Control, Site Discovery, and Privacy
2026-07-02
Amiya_desi
Article at a glanceQuick scan
  • Organizes script, translation, password, speed control, and site discovery extensions.
  • Also includes AI assistant and privacy-related extensions.
  • Check permission scope and data usage before installing.

This post only lists browser extensions and script entry points.

For commonly used software, see List of Free and Useful Software.

For related articles on this site, see Site Article Index.

What are Extensions?#

Browser Extension Entry Point
Browser Extension Entry Point

Clicking the puzzle piece on the right takes you to the extension store for downloads. Browser extensions are basically extra scripts injected into pages, so they can do a lot. That’s why it’s best not to download extensions from unknown sources; try to stick to more reputable ones. The ones in the store are usually sufficient.

AdGuard#

AdGuard Extension Panel
AdGuard Extension Panel

Downloadable from the official extension store, this is a super useful ad-blocking extension, practically a browser essential. Once downloaded, you can pretty much just leave it on.

Tampermonkey#

Tampermonkey scripts, famous as they are, probably need no introduction. They’re like custom extensions within extensions. https://www.youxiaohou.com/ is a recommended site where you can download various scripts and more. Here’s one I use quite often: hmjz100/LinkSwift: A JavaScript-based tool for obtaining cloud drive file download links. Modified from [Cloud Drive Direct Link Download Assistant], supports Baidu Netdisk / Alibaba Cloud Drive / China Mobile Cloud Drive / Tianyi Cloud Drive / Xunlei Cloud Drive / Quark Cloud Drive / UC Cloud Drive / 123 Cloud Drive, eight major cloud drives. There are also all sorts of other convenient scripts. And as a student, there’s a lot you can do with this, but I won’t go into details, hehe.

Immersive Translate — Peiduwa 🐸#

Peiduwa Extension
Peiduwa Extension

You can find it in the extension store. It’s really comfortable for bilingual translation, and the built-in free features are pretty good. If you have higher demands, you can top up some DeepSeek and use DeepSeek v4 Flash for translation, which should last a long time. Or you can look for some public DeepSeek sites, like the ones mentioned in my article Some Current Free APIs.

I recently tried Peiduwa and realized translation could be this fast! Immersive Translate, who are you? I don’t know you. Don’t disturb me and Peiduwa living our lives.

Bitwarden#

Bitwarden Extension
Bitwarden Extension

Also found in the extension store, its built-in features allow you to save identities, bank cards, password accounts, and passkeys, and it can autofill them. It’s practically essential for anyone navigating the internet. The sooner you start using it, the better; once you do, you won’t be able to live without it. For advanced 2FA storage, I recommend self-hosting a Vaultwarden Self-hosting a Vaultwarden, or finding one, for example, the organization Disroot Introduction offers a free Vaultwarden.

GlobalSpeed#

GlobalSpeed Extension
GlobalSpeed Extension

Also found in the extension store, it conveniently adjusts playback speed. Super useful for cramming courses (kidding)

SimilarSites#

SimilarSites Extension
SimilarSites Extension

Similarsites.com - Easily Explore alternative websites, you can download it here. Taking Youxiaohou as an example, you can use this extension to explore more similar and interesting websites, helping you find resources and explore the internet more effectively.

WebRTC Control#

Active State
Active State
Inactive State
Inactive State

Essential for going abroad, it helps you hide your real IP address, and it’s easy to toggle on/off; just click it to disable.

ALL API HUB#

ALL API HUB Extension
ALL API HUB Extension

Aggregates new-API sites and offers automatic check-ins and balance statistics. Finally, no more tedious daily check-ins!

Superpower Chatgpt#

Superpower ChatGPT Extension
Superpower ChatGPT Extension

https://spchatgpt.com/, the website is here. After installing this, you can use Enter for new lines and Ctrl+Enter to send! It also enables an advanced model switcher for custom models, and includes common features like chat export, categorization, and prompt saving.

Voyager#

Voyager Extension
Voyager Extension

Similar to the one above, this is the Gemini version, also supporting many features and very useful.

End#

That’s all for now. If I find other useful extensions in the future, I’ll update them here. It would be my honor if this helped you (≧∇≦)/

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# Browser Extensions # Productivity Tools # Privacy
Last edited 2026-08-02
List of Free and Useful Browser Extensions: Scripts, Translation, Passwords, Speed Control, Site Discovery, and Privacy
https://blog.sayori.org/en/posts/useful-browser-extensions-toolbox/
Author
Amiya_desi
Published at
2026-07-02
License
CC BY-NC-SA 4.0

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