Growth · alternatives · 2026

This is a tool for testing defensive CSS by randomizing HTML content. Developers use it to verify that their stylesheets remain functional and visually stable when content changes unexpectedly. It's designed for anyone… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Randomize HTML content to test your defensive CSS launched in 2021; newer entries below may have overtaken it.

1. 1
   CSS Type Set▲80

   Tool for designers to quickly test and style web content

   2014 · csstypeset.com · its alternatives →

2. 2
   Shuffle for Tailwind CSS▲420

   Tailwind CSS editor for busy developers

   2019 · shuffle.dev · its alternatives →

3. 3
   CSSeffectsSnippets.▲292

   A collection of CSS effects with a click to copy.

   2019 · emilkowalski.github.io · its alternatives →

4. 4
   CSS Scan 3.0▲256

   The fastest and easiest way to check, copy and edit CSS

   2022 · getcssscan.com · its alternatives →

5. 5
   Random Color▲81

   Generate random color for your new application and web app

   2021 · its alternatives →

6. 6
   CSS Grab n' Go Editor▲213

   Visual editor for learning and quick CSS mocking

   2020 · cssbuilder.veliovgroup.com · its alternatives →

7. 7
   CSS Speedrun – A small game to test and improve your CSS knowledge▲213

   A small fun app to test your CSS knowledge. Find the correct CSS selectors for the 10 puzzles as fast as possible.

   2022 · css-speedrun.netlify.app · its alternatives →

8. 8
   CSS generator for a high-def glass effect▲420

   There are lots of glassmorphism generators out there, but I wanted to push the effect further! This project is the result of months of experimenting with CSS property layering and battling browser quirks. Cross-browser compatibility is actually the reason I rely on ::before and ::after pseudo-elements to build up the effect. Move the color/opacity to the main element, and you’ll get weird color bleed on the corners in Chrome. Move the texture, and it muddles the bevel’s specular highlight. Move the bevel, and it gets blurred out by the backdrop-filter. And so on! Layers include: *…

   2025 · glass3d.dev · its alternatives →

9. 9
   Blotter.js▲243

   A JavaScript API for unconventional text effects on the web.

   2018 · blotter.js.org · its alternatives →

10. 10
    Randomly create beautiful website layouts▲317

    Generate the website

    2021 · shuffle.dev · its alternatives →

11. 11
    colorSS▲98

    Generate random CSS color palettes and get inspired

    2022 · xsgames.co · its alternatives →

12. 12
    I made CSS Scan 3.0, a fast way to check and copy CSS▲146

    Goodbye to "Inspect Element" — Visualize the CSS of any element you hover over, instantly, and copy its entire rules with a single click.

    2022 · getcssscan.com · its alternatives →

13. 13
    Flexbox Defense – learn CSS flexbox by playing a tower defense game▲243

    Your job is to stop the incoming enemies from getting past your defenses. Unlike other tower defense games, you must position your towers using CSS!

    2016 · flexboxdefense.com · its alternatives →

14. 14
    MarkMaker▲240

    Generate random logo designs

    2016 · emblemmatic.org · its alternatives →

15. 15
    Drop-In CSS Generator▲87

    Generate custom style sheets for simple websites

    2023 · dropincss.com · its alternatives →

16. 16
    playCSS▲171

    Improve your CSS skills by playing daily challenges

    2023 · its alternatives →

17. 17
    Browser Mockups▲204

    Create your own CSS browser mockups that you can copy-paste

    2020 · its alternatives →

18. 18AG
    A Genetic approach to CSS compression▲63

    2012 · friggeri.net · its alternatives →

19. 19
    I wrote a book about Debugging CSS▲137

    An ebook with lots of tips and techniques on how to debug CSS the right way with easy and studied methods.

    2020 · debuggingcss.com · its alternatives →

20. 20AR
    Assetroulette – Randomized Assets for Webdesign▲66

    2021 · assetroulette.com · its alternatives →

21. 21
    CSS selector generator for shortest, unique, robust selectors▲29

    CSS Selector Generator 🗺. Contribute to antonmedv/finder development by creating an account on GitHub.

    2018 · github.com · its alternatives →

22. 22
    Selector Forge▲133

    Hi HN, I'm Ahmad from the Intuned (https://intunedhq.com) team. Today, we're releasing and open-sourcing Selector Forge (https://selectorforge.ai/), a browser extension that generates reliable CSS/XPath selectors using AI. You can use it to create a selector for a single element or for an array of elements. The selectors it creates are meant to be "semantic" and more resilient to page changes than what Chrome DevTool’s “Copy Selector” (and other similar extensions) give you. Those tend to hand you something brittle like `#top > div.w-100.ph0-l.ph3.ph4-m > h1 >…

    Jun 2026 · selectorforge.ai · its alternatives →

23. 23
    CSS Spider▲122

    The fastest way to check, copy, export and edit CSS

    2020 · cssspider.fresalabs.com · its alternatives →

24. 24
    Divize▲117

    Learn, write, master HTML/CSS through real UI challenges

    2023 · divize.io · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →