JSON Viewer
The most beautiful and customizable JSON/JSONP highlighter that your eyes have ever seen. Open source at https://goo.gl/fmphc7
It is a Chrome extension for printing JSON and JSONP.
Notes:
* This extension might crash with other JSON highlighters/formatters, you may need to disable them
* To highlight local files and incognito tabs you have to manually enable these options on the extensions page
* Sometimes when the plugin updates chrome leaves the old background process running and revokes some options, like the access to local files. When this happen just recheck the option that everything will work again
* Works on local files (if you enable this in chrome://extensions)
Features
* Syntax highlighting
* 27 built-in themes
* Collapsible nodes
* Clickable URLs (optional)
* URL does not matter (the content is analysed to determine if its a JSON or not)
* Inspect your json typing "json" in the console
* Hot word `json-viewer` into omnibox (type `json-viewer` + TAB and paste your JSON into omnibox, hit ENTER and it will be highlighted)
* Toggle button to view the raw/highlighted version
* Works with numbers bigger than Number.MAX_VALUE
* Option to show line numbers
* Option to customize your theme
* Option to customize the tab size
* Option to configure a max JSON size to highlight
* Option to collapse nodes from second level + Button to unfold all collapsed nodes
* Option to include a header with timestamp + url
* Option to allow the edition of the loaded JSON
* Option to sort json by keys
* Option for C-style braces and arrays
* Scratch pad, a new area which you can type/paste JSON and format indefinitely using a button or key shortcut. To access type `json-viewer` + `TAB` + `scratch pad` ENTER
This plugin is open source
https://github.com/tulios
Bugs and suggestions
https://github.com/tulios/json-viewer/issues
Contributors
Thiago Pontes (@thiagopnts)
@bluec0re
@North101
Ben Hollander (@benhollander)
Mehdi Bahrami (@mehdibahraami)
Reimund Trost (@reimund)
Ben van Enckevort (@benvan)
License
MIT License
Any questions tweet me @tulios
Latest reviews
The author just needs to upload the old code and rename the version. It is OK
This plugin is amazing! Google *force disabling* this plugin, even though it still works, might be the reason I finally: 1. Stop using Chrome 2. Cancel Google Workspace 3. Cancel YouTube Premium 4. Cancel Google Fi 5. Stop Buying Pixel Phones 6. Stop Developing Android Apps 7. Stop Buying Google Home/Nest Devices 8. Stop Buying Light Bulbs, Sockets, Etc that work with Google Home 🤷♀️
I've been using it for years and it works perfectly for me.
Please, "follow best practices for Chrome extensions" ;)
This plugin doesn't work anymore, I use this one [JSON Viewer Chrome Extension] below now, It works pretty well. https://chromewebstore.google.com/detail/json-viewer-chrome-extens/kggkmmjihpjangbkpcdidlhfbnnfaldn
What happened with the extension? Is outdated at March 3rd, 2025
Awesome..
Don't even work, was trying on instagram.
works well!
Great and Simple
great tool to view large JSON content
Great options and great display of JSON in the browser
Utterly useless. Could not figure out how to use it. The description on the Github page is "and here magic happens" - Seem it assume one knows Chrome developer mode. Sorry, I'm a techie but when I want to use a simple tool I do not want to learn 3 other tools first to understand basic usage instruction.
doesn't work on Edge
Very useful tool for viewing json file in web browser
It would be nice if google would be upfront about the $5 registration fee. I paid it and I think the extension will be well worth it but having all the information upfront is best practice. Just some feedback.
whats ?
Fast and reliable. I love that it handles very large files with ease (even though it warns me that it might not). Thank you to the authors.
Better performance than JSON Formatter on large responses.
eazy,useful
No dark theme.
Awesome extension — must have for web developers
Still working for me !!
Really useful extension. It has quite flexible configurations, like enabling line numbers, default folding on or off, using different themes etc. Plus it has a search functionality with support of regex, so you can search inside the displayed JSON. Thank you!
Really useful extension. It has quite flexible configurations, like enabling line numbers, default folding on or off, using different themes etc. Plus it has a search functionality with support of regex, so you can search inside the displayed JSON. Thank you!
chrome 失效的解决方案：在浏览器输入 chrome://flags，搜索 json，将 Enable network logging to file 设置为 enable，重启浏览器就可以正常使用了
Does not work anymore
Does not work anymore
перестал работать после обновления chrome( ОЧЕНЬ ждем фикса, расширение очень помогает, огромное спасибо разработчику!
Not working anymore.
chrome失效，怎样解决
Not working anymore. Chrome version 117.0.5938.92 (Official Build) (64-bit)
Not working anymore. Chrome version 117.0.5938.92 (Official Build) (64-bit)
It's a great extension and I know it stopped working with the latest chrome updates, but here's a temporary fix (macos only): close your browser and run the following command in terminal: Brave: open -a "Brave Browser.app" --args --disable-blink-features=PrettyPrintJSONDocument Chrome: open -a "Google Chrome.app" --args --disable-blink-features=PrettyPrintJSONDocument Credits: https://github.com/tulios/json-viewer/issues/342#issuecomment-1727515249
It's a great extension and I know it stopped working with the latest chrome updates, but here's a temporary fix (macos only): close your browser and run the following command in terminal: Brave: open -a "Brave Browser.app" --args --disable-blink-features=PrettyPrintJSONDocument Chrome: open -a "Google Chrome.app" --args --disable-blink-features=PrettyPrintJSONDocument Credits: https://github.com/tulios/json-viewer/issues/342#issuecomment-1727515249
The extension is broken with the latest Chrome update
The extension is broken with the latest Chrome update
chrome失效，怎样解决
Use to love it, but now in the latest version of Chrome it stopped working.
Love it
Love it
good, love it
good, love it
Lỗi trên trình duyệt Edge, trình duyệt Cốc Cốc thì hoạt động bình thường
Stop working in Chrome version 117.0.5938.63 (Official Build) (64-bit)
Stop working in Chrome version 117.0.5938.63 (Official Build) (64-bit)
It worked until the last version of Chrome, but now with Version 117.0.5938.62 (Official Build) (arm64) is not working anymore.
It worked until the last version of Chrome, but now with Version 117.0.5938.62 (Official Build) (arm64) is not working anymore.
Not working in latest chrome.
Not working in latest chrome.
