extension ExtPose


CRX id


Description from extension meta

Fast JSON viewer - highlights, shows items count/size, handles large files

Image from store JSON Lite
Description from store Features: - Format JSON/JSONP responses and clipboard - Select and format/encode/decode text on every page - Collapsible arrays, objects and long values - Collapse all childs with Ctrl(Command) + Click - Collapse property also on all sibling items with Alt(Option) + Click - Count items and properties in a collection - Show collection sizes - Do its best to show large (10MB+) JSON files - Do its best to show invalid JSON files - Do not sort objects with numeric keys - Do not round large numbers - "Save as..." saves the original JSON document - Select and copy a working JSON from the formatted JSON Copyright (c) 2016-2021 Lauri Rooden The MIT License

Latest reviews

  • (2021-07-23) Stephan Enderlein: The only json-viewer that displays the number of entries in an array.
  • (2021-07-13) West: Very nice. Hope there are more theme.
  • (2021-05-26) David Chan: This is the best JSON viewer extension I've ever used! Just try it without hesitation...
  • (2021-05-24) Khoa Nguyễn Đăng: excellent exts! good job
  • (2020-09-27) Lucas Monzón: Looks perfect
  • (2020-08-11) SnekNOTSnake: The developer provides us with two default themes: light and dark. However, we can customize the theme itself. Here, I provide a link to my custom theme (Based on One Dark Pro VSCode theme): https://pastebin.com/qBKvpqyi
  • (2019-12-11) Bill Cheng: Really nice and fast. Better than a ton of JSON parser I used.
  • (2019-11-07) Derek Lam: Perfect
  • (2019-09-25) Boghyon Hoffmann: This is the best JSON viewer I've found so far, in terms of efficiency as well as DX/UX. Unlike other JSON viewers, this extension manages to allocate memory only when it's really needed. 👍 It even supports *.geojson files
  • (2019-09-05) inVisement Architect: It works very well. It is light, fast, and minimalist.
  • (2019-06-20) SK AZAD: Awesome. Now no need to use other json viewer to simplify the response. Just hit the url in browser and you are done. :)
  • (2019-04-05) Георгий: супер
  • (2019-03-03) Julian Knight: Light and fast, gets the job done. Would be nice to have a fold-all option for complex JSON files so that you can start to unfold it from the top.
  • (2019-02-22) Hrushikesh Mohapatra: This is the best Json viewer I have come across. I like the "unescape string" feature very much, it helps to read newline formatted long debug info strings.
  • (2019-02-21) I've been looking for this extension for a few years. I've used other JSON viewers/formatters and they've all been incredibly slow especially when hiding/revealing branches. I deal with large JSON datasets at my job and this plugin is easily the quickest of all that I have tried. Great job!
  • (2019-02-05) The automatic unix timestamp to date display is very helpful.
  • (2018-12-21) Lê Công Tuấn Vũ: Please add response status : 200, 400, 500,....
  • (2018-12-02) Best JSON formatter for chrome.
  • (2018-11-16) Danyel Nanovsky: LARGE JSON FILES - This extension covers them with no hick-up at all!!! Using this more than a year on day to day basis - This is your JSON viewer for Chrome :)
  • (2018-09-15) Ali Khosro: Just Works fast and light. Do not forget to enable "allow access to file urls". It gives summary stat, and opens large files when other json viewers fail.
  • (2018-06-05) Mikhail Samsonkin: Fast! Thank you very much!
  • (2018-05-25) Dan Rynaski: Much faster than other ones I've tried. Thank you!
  • (2018-04-26) Taufik Nur Rahmanda: best one, used it on firefox & now chrome
  • (2018-03-31) A A: Super fast even on large documents!!!
  • (2018-01-22) Chandrashekar Chimbili: Tried many json formatter extensions. The best I have used so far. Keeps the view simple. Like it!!
  • (2017-12-06) Jitendra Dalai: Super json viewer. All the things you want at a place.
  • (2017-06-28) Ruud: A raw view would be nice. But even without it, this JSON viewer is already the best.
  • (2017-03-28) Chris Berry: Hands down the best JSON viewer plugin I've found. Super performant for large documents.
  • (2017-01-19) Theodore Tucci: Though there may only be five reviewers so far, this is the best JSON viewer available. All of the other JSON viewers lag or have issues but this one loads up even the largest of requests from my API flawlessly without any lag. Only thing that could make this better is if there were a switch to view in either RAW format or Prettified JSON.
  • (2016-10-24) Jason: very fast. good.

Latest issues

  • (2022-01-18, v:21.3.0) Shai Coleman: ndjson / jsonl support
    Could you please add support for ndjson/jsonl formats? http://ndjson.org/ https://jsonlines.org/
  • (2020-04-21, v:19.6.0) Leo Qu: Indentation from 2 spaces to 4 spaces
    Hi there, thanks so much for this awesome tool! I was wondering how do I adjust the indentation of json from 2 spaces to 4 if possible? Which is the only thing I'm missing fromthe JSON formatter tool. If not, can we please include this option in the future? Best regards, Leo
  • (2019-12-09, v:19.6.0) Derek Lam: Pls add feature, copy formatted json
    Currently, when I copy { "msg": "", "rc": "0000", "disp_msg": "", "data": { "rs": { "HeldIndicator": true }, "idata": { "cmpy": "ABC", "paxCnt": 2 } } }
  • (2018-10-05, v:18.2.0) Daniel Perez: Not working
    Since last chrome update, doesn't work. I see the JSON in my navigator but isn't formatted
  • (2018-08-31, v:18.2.0) Jerome Indefenzo: Allow custom styling
    This is by far the best JSON viewer on both Chrome and Firefox. The only thing missing is a theme system in place and a way to customize styles. I think the object decorations are a bit noisy, especially since I'm not concerned with the subtree's byte sizes most of the time. Having a way to customize how it looks would be a huge plus for this extension, since it gets boring staring at the dull green and blue JSON lists. Thanks!


8,000 history
4.9 (47 votes)
Last update / version
2021-03-05 / 21.3.0
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