PJSON.live
Format, validate & convert json to typescript instantly
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Hemendra Khatik

PJSON.live - Format, validate & convert json to typescript instantly

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pjson.live makes working with JSON fast, smooth, and actually enjoyable. It runs 100% on your device, so your data never leaves the browser. Instantly visualize complex JSON, collapse objects, generate TypeScript interfaces, and copy paths in one click. No sign-up, no lag, no nonsense - just a clean, secure, developer-grade experience built for speed and flow.

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Hemendra Khatik
Maker
📌
Hey everyone 👋 I’m the maker of pjson.live. This started out of pure frustration - every JSON tool I used felt outdated or clunky. I wanted something clean, fast, and built for devs who actually care about good design and smooth flow. So I built pjson.live, a JSON workspace that runs completely on your device. No servers, no tracking, no uploads - everything stays private and local. It lets you explore JSON instantly, collapse or expand complex data, and even generate TypeScript interfaces in one click. Would love to know what you think, and if there’s anything you’d like to see added next. Give it a spin and tell me how it feels - pjson.live
Sanskar Yadav
Cal ID

Congrats on the launch!

How does the tool handle very large JSON files while maintaining the instant performance you mention?

Hemendra Khatik
Maker

Thanks !@sanskarix Using memoized components and non-blocking rendering, it stays smooth and responsive. It can handle upto 4 MB JSON payload easily.

Sanskar Yadav
Cal ID

@hemendra_khatik That's a smart approach. Thanks!

Marc Hildmann

@sanskarix 

For anything above 4 MB, you'll probably need a desktop app rather than browser tool.

Browser tools hit performance limits around that size. Desktop apps can use multi-threading and native parsing (simdjson, etc.) to handle GB-scale files.

@hemendra_khatik Nice work on the launch! The clean UI and TypeScript generation are 👌

(I built a desktop JSONL viewer for the > 100 MB use case if anyone needs that - different tool for different scale)

Chilarai M
Swytchcode

Good job. Make it available in the VSC marketplace... and also other IDE marketplaces
It'll be handy there

Hemendra Khatik
Maker

Thanks@chilarai I’m planning to make it available on the VS Code marketplace soon.

Chilarai M
Swytchcode
Khushal Sharma

I liked the line number for errors feature. Generally it's quote or colony missing and when on line number, I can debug easily.

Hemendra Khatik
Maker
Andrei Kobyshev

Congrats on the launch! 🎉
Are you planning to add a feature for generating a JSON Schema from a JSON file, or creating a sample JSON based on an existing JSON Schema?

Hemendra Khatik
Maker

Thanks! @yokotoka That’s a great suggestion! will work on it.