Life & fun · alternatives · 2026

Responsify.js is a JavaScript library designed for developers who need to optimize images and media for different screen sizes and devices. The tool automatically adjusts responsive images based on viewport dimensions… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Responsify.js launched in 2015; newer entries below may have overtaken it.

1. 1
   Responsivize▲109

   A must-have tool to develop responsive websites

   2021 · virejdasani.github.io · its alternatives →

2. 2RV
   Responsivator - View/Share Responsive Sites▲61

   2012 · dfcb.github.com · its alternatives →

3. 3
   Imgix.js▲154

   Responsive images are now easier and more creative than ever

   2014 · docs.imgix.com · its alternatives →

4. 4
   Minified.js – a fully-featured, 4K alternative to jQuery and MooTools▲158

   2013 · minifiedjs.com · its alternatives →

5. 5
   Imgix.js, a JavaScript library for responsive imaging▲102

   Explore Imgix SDKs, plugins, and integration guides for popular platforms and languages

   2014 · imgix.com · its alternatives →

6. 6
   Responsinator▲64

   Designed to test responsive websites on different devices.

   2015 · its alternatives →

7. 7SO
   Smooth out breakpoint layout jumps with responsify▲5

   A CSS technique that helps developers prevent jarring layout shifts when user resizes the browser.

   2022 · responsify.dev · its alternatives →

8. 8
   Responsive Screenshots▲358

   Take responsive screenshots with the click of a button

   2017 · its alternatives →

9. 9
   Responsively▲458

   Develop responsive web-apps 5x faster

   2020 · responsively.app · its alternatives →

10. 10
    Responsihub▲7

    Test website responsiveness on real devices, fast & easy

    2025 · its alternatives →

11. 11BJ
    BigVideo.js▲244

    2012 · dfcb.github.com · its alternatives →

12. 12SI
    Simple image resizing/optimization service▲171

    2017 · scaley.io · its alternatives →

13. 13
    Doka.js▲331

    A JavaScript image editor for your website ✂️

    2018 · pqina.nl · its alternatives →

14. 14
    Turntable.js▲134

    A responsive JQuery slider

    2016 · polarnotion.github.io · its alternatives →

15. 15
    ReqRes▲87

    A hosted REST-API ready to respond to your AJAX requests.

    2015 · reqres.in · its alternatives →

16. 16
    Pure▲164

    Set of small, responsive CSS modules

    2014 · pure-css.github.io · its alternatives →

17. 17
    Imgsquash – My image compression website project▲178

    Simple image compression full website code written in node, react and next.js framework. Easy to deploy as a microservice. - eashish93/imgsquash

    2019 · github.com · its alternatives →

18. 18
    FilePond.js▲181

    Uploads anything you throw at it ☁️

    2018 · pqina.nl · its alternatives →

19. 19
    p5.js▲202

    JS library for creating graphic and interactive experiences

    2015 · p5js.org · its alternatives →

20. 20
    PullToRefresh.js▲119

    A small, but powerful JavaScript library crafted to power your webapp

    2016 · boxfactura.com · its alternatives →

21. 21RP
    Responsive page designer – no grid/CSS frameworks▲49

    2013 · responsivewebcss.com · its alternatives →

22. 22BJ
    Behave.js – Coding Behaviors for textarea elements▲180

    2013 · jakiestfu.github.com · its alternatives →

23. 23
    Lowdefy – Build internal tools with YAML on an open-source framework▲107

    We're excited to announce Lowdefy V4, a full-stack web framework built on top of Next.js that simplifies building web applications, internal tools, admin panels, BI dashboards, and CRUD apps using YAML or JSON configuration files. New in V4: Next.js: Lowdefy now runs on top of the Next.js framework. All of Auth.js: App auth is now handled by Auth.js supported providers, adapters and callbacks and events, easy to configure, but all of which can be customized. Plugin extensibility: Apps can now be extended with any npm or pnpm workspace plugins. Our story: We have developed a simple…

    2021 · lowdefy.com · its alternatives →

24. 24
    WebPonize▲73

    macOS application that converts images to WebP.

    2015 · apps.apple.com · 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 →