Software Alternatives & Reviews

User JavaScript and CSS VS 30 Seconds of Knowledge

Compare User JavaScript and CSS VS 30 Seconds of Knowledge and see what are their differences

User JavaScript and CSS logo User JavaScript and CSS

User JavaScript and CSS on any website

30 Seconds of Knowledge logo 30 Seconds of Knowledge

Become a better developer, in every new tab.
  • User JavaScript and CSS Landing page
    Landing page //
    2020-01-09
  • 30 Seconds of Knowledge Landing page
    Landing page //
    2019-03-08

User JavaScript and CSS videos

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30 Seconds of Knowledge videos

Thoughts on Mixkit, 30 Seconds of Knowledge &The Tech Memo!

More videos:

  • Review - 30 seconds of knowledge

Category Popularity

0-100% (relative to User JavaScript and CSS and 30 Seconds of Knowledge)
Browser Extension
34 34%
66% 66
Monitoring Tools
0 0%
100% 100
Developer Tools
62 62%
38% 38
Dark Mode
34 34%
66% 66

User comments

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Social recommendations and mentions

Based on our record, User JavaScript and CSS should be more popular than 30 Seconds of Knowledge. It has been mentiond 13 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

User JavaScript and CSS mentions (13)

  • I made a simple Chrome Extension which removes Promoted Posts (Ads) on Reddit!
    You can use such scripts on tampermonkey (chrome) or greasemonkey (for firefox) or User Javascript an CSS injector. Source: 10 months ago
  • On Kbin, upvotes & downvotes are public.
    Speaking of Kbin, I made a blue theme (before) that anyone can use. Here is the CSS code. To apply it, use the chrome/brave extension called 'User JavaScript and CSS'. There are other extensions in different browsers that do the same thing, just search for custom CSS and apply the css code to kbin.social. Source: 11 months ago
  • User JS to help explore the terminal.
    I recommend this to use it: https://chrome.google.com/webstore/detail/user-javascript-and-css/nbhcbdghjpllgmfilhnhkllmkecfmpld. Source: about 1 year ago
  • any opera extensions or 3rd party apps that changes the background you lot can recommend?
    Goto https://chrome.google.com/webstore/detail/user-javascript-and-css/nbhcbdghjpllgmfilhnhkllmkecfmpld, click "add to Opera" and click "add extension" to install it. Source: over 1 year ago
  • any opera extensions or 3rd party apps that changes the background you lot can recommend?
    You might be able to use this extension to apply CSS that specifies a background image to sites you want. Source: over 1 year ago
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30 Seconds of Knowledge mentions (3)

  • Learn programming while browsing the internet
    I wanted to share an extension my brother and I created some time ago https://30secondsofknowledge.com/. Source: over 2 years ago
  • Web Extension that lets you gain new developer skills, every time you open a New Tab
    My brother and I created https://30secondsofknowledge.com/ 2 years ago, and we recently started working on a new version with even more languages, a new design update, remote jobs section! Also as a part of an update, we are rewriting the extension to Manifest 3.0. Source: over 2 years ago
  • Show HN: Become a better Developer, one New Tab at a time
    Hi Community! My younger brother and I have built https://30secondsofknowledge.com/ extension almost 2 years ago, and we are currently in work of publishing a new version with more languages / new facelift / jobs posting, and much more Over 2 years we gained more then 25k developers using it world wide, and their comments are really motivating us to move foreword All the best! - Source: Hacker News / over 2 years ago

What are some alternatives?

When comparing User JavaScript and CSS and 30 Seconds of Knowledge, you can also consider the following products

Dark Reader - Reduce eye strain in your browser with this extension that provides a dark theme for browsing.

Random User-Agent - Automatically change the user agent after specified period of time to a randomly selected one, thus...

Stylus - User Styles Manager - Stylus is a userstyles editor and manager based on the source code of Stylish version 1.5.2.

Chameleon WebExtension - Chameleon is a Firefox extension to Spoof your browser profile.

Violentmonkey - Violentmonkey is a userscript manager to support running userscripts in web pages.

User-Agent Switcher and Manager - spoofs browser's User-Agent string.