Dev tools · alternatives · 2026

24 alternatives to Web Mask

Integration test before deployment

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Web Mask launched in 2022; newer entries below may have overtaken it.

1. 1IB
   I built an online image editor using WebGL and CSS transforms▲425

   2019 · pqina.nl · its alternatives →

2. 2
   Devsync▲328

   Visually edit CSS. Live-sync the result with your editor.

   2020 · its alternatives →

3. 3
   InTab 2.0▲89

   Style any website visually

   2022 · its alternatives →

4. 4
   Integrations.js▲200

   Launch new features at the click of a button.

   2017 · its alternatives →

5. 5IM
   I made CSS Pro, a re-imagined Devtools for web design▲505

   2023 · csspro.com · its alternatives →

6. 6
   Font Fit▲375

   Try fonts on a live website and share results with a link.

   2016 · its alternatives →

7. 7IM
   I made a CLI tool to create web extensions with no build configuration▲381

   Hello HN! I'm the creator and solo developer of Extension.js, a development tool for browser extensions with built-in support for TypeScript, WebAssembly, React, and modern JavaScript. Developers use it to spend less time configuring the compilation config or learning new frameworks and more time actually writing code. Most projects similar to Extension.js rely on some sort of abstraction or configuration to get started, making the initial development process slow given the extra learning curve and setup guidelines. By using Extension.js, adding the package to your npm scripts is all it…

   2024 · github.com · its alternatives →

8. 8
   Font Face Ninja▲196

   Browser extension to quickly find the webfonts a site uses

   2014 · its alternatives →

9. 9
   Fonts Ninja Chrome Extension▲205

   Identify and bookmark fonts from any website

   2020 · its alternatives →

10. 10BB
    Browser-based web design platform with code import and CSS filters▲91

    I built a web-based app for building websites. The main unique features are: 1. The ability to copy and paste any HTML and CSS into the editor with no limits. I was never able to find another app that could do this without some form of limitation. 2. CSS filtering, which means you can click on an element to view and edit the CSS selectors and rules that apply to that element alone. In many cases I've found CSS naming conventions like BEM to become irritating at certain scales, so this is an alternative solution. This part of the app needs some more development work but the concept is there.…

    2024 · demo.gocodestudio.com · its alternatives →

11. 11
    Mask▲116

    A paywall built for the modern web

    2016 · its alternatives →

12. 12
    Fonty▲153

    Simple tool for testing web fonts directly on live sites

    2018 · its alternatives →

13. 13
    LambdaTest Chrome Extension▲191

    Cross browser testing by taking full-page screenshots

    2018 · its alternatives →

14. 14
    UI Inspector▲112

    Visual CSS editor for Google Chrome

    Feb 2026 · chromewebstore.google.com · its alternatives →

15. 15
    Web Inspector▲107

    Inspect, debug, and extract — all in one web tool

    2025 · chromewebstore.google.com · its alternatives →

16. 16
    Highlight's Next.js Integration▲211

    A supercharged way to monitor your entire Next.js app

    2022 · its alternatives →

17. 17
    DesignDupe▲162

    Chrome Extension: Identify colors and fonts on any website

    2024 · its alternatives →

18. 18
    Hide My Web▲139

    Hide, blur and highlight elements of any webpage.

    2021 · its alternatives →

19. 19
    CSS Inspector▲141

    Get the CSS of any element on the web

    2020 · its alternatives →

20. 20
    Copycat▲120

    Extension to test web apps without writing a line of code

    2019 · its alternatives →

21. 21
    CSS Spider▲122

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

    2020 · its alternatives →

22. 22CB
    Compiled, buildtime atomic CSS in JavaScript and all your favorite APIs▲47

    2021 · compiledcssinjs.com · its alternatives →

23. 23
    SuperDev Pro▲110

    Edit, inspect and enhance any website visually.

    2023 · its alternatives →

24. 24
    Sitemod.io Chrome Extension▲98

    Modify any website in real-time, save your mod and share it.

    2017 · 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 →