JavaScript userscript

Open-source JavaScript projects categorized as userscript

Top 23 JavaScript userscript Projects

  • undiscord

    Undiscord - Delete all messages in a Discord server / channel or DM (Easy and fast) Bulk delete

    Project mention: I read somewhere on a GitHub post that you can Bulk Delete Discord Messages by setting some certain delay or something. | /r/github | 2023-07-08

    The closest thing to discussion threads on github are probable the issues. e.g.

  • pangu.js

    Paranoid text spacing in JavaScript

  • WorkOS

    The modern API for authentication & user identity. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  • h5player


    Project mention: Has anyone used the h5player browser script and is it safe? | /r/firefox | 2023-03-29
  • Simple-YouTube-Age-Restriction-Bypass

    A simple browser extension to bypass YouTube's age verification, disable content warnings and watch age restricted videos without having to sign in!

    Project mention: YouTube weryfikacja wieku | /r/Polska | 2023-07-03
  • GitHub-userscripts

    Userscripts to add functionality to GitHub

  • control-panel-for-twitter

    Browser extension which gives you more control over your Twitter timeline and adds missing features and UI improvements - available for desktop and mobile browsers

    Project mention: The majority of traffic from X may have been fake during the Super Bowl | | 2024-02-16

    Control Panel for Twitter [1] can automatically hide boosted blue replies for you

    …although if an account is big enough, you're safer looking at the Quote Tweets instead for actual comments (it also restores the old direct link to those in the focused Tweet), e.g. you're lucky to get more than a handful of non-blue replies under an Elon Musk tweet among the engagement farmers before you hit the maximum number of replies Twitter will load


  • Stay

    Stay is a local userscript manager and an extension sample for Safari on iOS/iPadOS.

  • Onboard AI

    ChatGPT with full context of any GitHub repo. Onboard AI learns any GitHub repo in minutes and lets you chat with it to locate functionality, understand different parts, and generate new code. Use it for free at

  • maxurl

    Finds larger/original versions of images and videos

    Project mention: Need the community's help finding pictures of Finn at TwitchCon | /r/F1NN5TER | 2023-07-10

    When you're archiving, make sure you're using this GreaseMonkey script to auto-redirect to higher quality versions of the image.

  • firefox-scripts

    userChromeJS / autoconfig.js and extensions

    Project mention: Adapting custom buttons and legacy extensions to Librewolf Portableapps install | /r/LibreWolf | 2023-09-13
  • katakana-terminator

    A browser extension to convert gairaigo (Japanese loan words) back to English

  • SearchJumper

    Yet another awesome web extension for switching search engines, can also search anything (selection text / image / link / find in page) on any engine with a simple right click or a variety of menus and shortcuts. Build with React & Material-UI. (WIP). 搜索酱/搜尋醬/検索ちゃん

    Project mention: Show HN: A browser extension to instantly switch engines and customize workflow | | 2024-01-17

    I enjoy collecting various search engines, but some of them lack support for GET/POST searches and switching between different search engines can be a hassle. So, I developed this browser extension that enables automated searching on websites that don't support GET/POST through simulated input and clicks. It also offers one-click switching between search engines. Additionally, it highlights the searched keywords on the search results page. Lastly, it allows cross-domain data fetching and displays the information in a pop-up layer within the current page.


    Give it a try. Love to hear your thoughts!


  • GoodTwitter2

    Userscript to modify the looks of

  • ChatGPT-DeMod

    Tampermonkey/Greasemonkey script that hides the moderation results when communicating with ChatGPT.

    Project mention: UNABLE TO JAILBREAK CHATGPT. | /r/ChatGPTJailbreak | 2023-06-25

    You have offered zero information on what you’re looking for. There are many jailbreaks for various purposes. Tell us, without getting in too much detail if you’re not comfortable, what kind of thing you’d use it for, so we can offer advice. Also, before anything, install the DeMod script.

  • IMDb-Scout-Mod

    Auto search for movie/series on torrent, usenet, ddl, subtitles, streaming, predb and other sites. Adds links to IMDb pages from hundreds various sites. Adds movies/series to Radarr/Sonarr. Adds external ratings from Metacritic, Rotten Tomatoes, Letterboxd, Douban, Allocine. Media Server indicators for Plex, Jellyfin, Emby. Dark theme/style for Reference View. Adds/Removes to/from Trakt's watchlist. Removes ads

    Project mention: If your Firefox suddenly started to hang or become extremely slow today, check if you have tampermonkey 5.0. Disable it for now as it seems to be the culprit. | /r/firefox | 2023-12-08

    If you like movies/tv IMDb Scout is a must.

  • uc.css.js

    A dark indigo CSS theme for Firefox and a large collection of privileged scripts to add new buttons, menus, and behaviors and eliminate nuisances. The theme is similar to other userChrome stylesheets, but it's intended for use with an autoconfig loader like fx-autoconfig, since it uses JavaScript to implement its more functional features.

  • Kinopoisk-Watch

    Скрипт, превращающий в бесплатный онлайн - кинотеатр! 🎥

  • HandyImage

    browser userscript (extension) which Shows just fullsize Image with hotkeys & without pop-ups on many image-hosting sites

  • psdle

    Improving everyone's favorite online download list, one loop at a time.

    Project mention: Is there a way to go through my PS3 games on PC/web? | /r/PS3 | 2023-07-02

    Install PSDLE, the extension for chrome or firefox is the easiest way.

  • userscript-clean-twitter

    Bring back the peace on Twitter

    Project mention: Sites like HN on other topics? | | 2023-09-22

    Also see this userscript to "Bring back the peace on Twitter":

  • Extension

    Browser extension to boost volume, change user agent, enable right click, copy & select, disable WebRTC, and save image as type (JPG, PNG & WebP). (by BrowserBoost)

    Project mention: Show HN: Extension that combines multiple tools into one | | 2023-12-23
  • mpiv

    A fully reworked fork of Mouseover Popup Image Viewer

    Project mention: Extension for zooming images on Twitter | /r/firefox | 2023-12-09

    Thanks, but I ended up using this instead:

  • Remove-Google-Redirection

    Remove redirection and click-tracking in Google search results.

  • Automail

    An enhancement collection for

    Project mention: Find out if an Anime has dubs | /r/anilist | 2023-06-03

    Personally I use a browser extension called Automail. It adds a ton of extra options to the site you can play with, one of which will make it say "English Dub Exists" on the anime's page.

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2024-02-16.

JavaScript userscript related posts


What are some of the best open-source userscript projects in JavaScript? This list will help you:

Project Stars
1 undiscord 4,654
2 pangu.js 4,128
3 h5player 2,242
4 Simple-YouTube-Age-Restriction-Bypass 1,965
5 GitHub-userscripts 1,696
6 control-panel-for-twitter 1,651
7 Stay 1,000
8 maxurl 956
9 firefox-scripts 881
10 katakana-terminator 595
11 SearchJumper 544
12 GoodTwitter2 467
13 ChatGPT-DeMod 319
14 IMDb-Scout-Mod 310
15 uc.css.js 298
16 Kinopoisk-Watch 283
17 HandyImage 253
18 psdle 182
19 userscript-clean-twitter 166
20 Extension 157
21 mpiv 144
22 Remove-Google-Redirection 144
23 Automail 143
Power Real-Time Data Analytics at Scale
Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.