A simple playground to write, run, and test JavaScript snippets, with an in-UI console. Built for quick experiments, debugging, learning, testing ideas, and working with JavaScript without needing a full development environment. This tool is offline by design, providing a robust JavaScript playground directly within Chrome.
This idea came while I was preparing for a JavaScript interview.
There are plenty of online JavaScript playgrounds, but I found them surprisingly distracting—you open the browser to code, and the internet is right there to pull your attention elsewhere. Offline editors, on the other hand, often feel like full-blown IDEs when all I wanted was something simple.
So I built Offline JavaScript Playground: a focused JavaScript editor and runner that works entirely offline. No Node.js, no VS Code, no npm, no setup - just open it and start experimenting with JavaScript.
It’s intentionally lightweight and built with **pure JavaScript, without frameworks**.
The goal is simple: **open → write JavaScript → run → learn.** 🚀
this hits a real gap - most "quick JS test" tools either need a tab open to some CDN-loaded playground or drag in a whole IDE just to check what Array.flat does. curious how you handle the case where someone wants to test a snippet against a library, like lodash or a fetch call - is it strictly vanilla JS/JSON with no way to pull in anything external, or can you paste a UMD bundle in and go from there? that boundary is probably the thing that decides whether this replaces a browser tab of scratch code for people, or just some of it.
The storage answer is worth putting in the listing itself. If snippets sit in chrome.storage.sync you'll hit the per item cap on a long file and the write fails quietly, which is about the worst failure a scratchpad can have. chrome.storage.local dodges that but then nothing follows you to a second machine, so people should know which trade they bought. And nobody exports before they lose something, so a scheduled dump to Downloads is worth more than the export button.
u said under 2mb zipped and no node server, chrome just runs the js. do snippets survive a browser restart or does it open empty every time
Congrats on the launch, Suman! "Offline by design" is a smart reframe, everyone else treats offline as a limitation and you turned it into the whole point. Distraction is the real competitor here, not other editors.
Cool I like the idea of keeping experiments separate from the IDE... will you eventually expand into lightweight environment for more serious debugging too?
About Offline JS Playground on Product Hunt
“Write, run, and test JavaScript snippets & JSON offline”
Offline JS Playground launched on Product Hunt on September 4th, 2026 and earned 97 upvotes and 13 comments, placing #12 on the daily leaderboard. A simple playground to write, run, and test JavaScript snippets, with an in-UI console. Built for quick experiments, debugging, learning, testing ideas, and working with JavaScript without needing a full development environment. This tool is offline by design, providing a robust JavaScript playground directly within Chrome.
Offline JS Playground was featured in Chrome Extensions (52.8k followers), Productivity (660k followers), Developer Tools (518.8k followers) and Vibe coding (660 followers) on Product Hunt. Together, these topics include over 256.8k products, making this a competitive space to launch in.
Who hunted Offline JS Playground?
Offline JS Playground was hunted by Suman Hansada. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Suman Hansada