Visual Studio Code? I use it pretty much for everything, though Iโ€™m not JSON power user. What would dedicated JSON editor do above what VS Code with JSON plugin does? Answer from oo_viper_oo on reddit.com
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Reddit
reddit.com โ€บ r/macos โ€บ nice json editor for mac?
r/MacOS on Reddit: Nice JSON Editor for Mac?
December 28, 2021 -

Hello guys. So I've been using Smart JSON Editor as my JSON editor of choice for the last couple of years.

However this app has not been updated for like 3 years and thus it's not native for ARM (now I got an M1 Pro MacBook Pro).

I know it's not a big deal to run it in Rosetta (especially something like a JSON editor), but I would rather use an app that's been actively developed (this app was last updated when macOS Mojave was released).

Recommendations with a nice and modern UI would be more appreciated, but at this point I doubt they even exist hahaha

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Dadroit
dadroit.com โ€บ blog โ€บ json-viewer-mac
6 Best JSON Viewer Tools for macOS
November 22, 2023 - JSON Wizard is a macOS tool designed for efficient JSON data management. It offers live syntax checking and a tabbed tree view, providing clear navigation and detailed insights into each field and its type.
Discussions

macos - JSON viewer for OS X - Ask Different
I am looking for a JSON viewer for OS X that can: open decently large files (e.g. > 10 MB), unlike the JSON Editor Eclipse Plugin (take over 1 minute to generate the treeview for a 500 KB JSON fil... More on apple.stackexchange.com
๐ŸŒ apple.stackexchange.com
Which programs can I use to visualize a JSON File? - Stack Overflow
I need a program to visualize a json response from a URL or a json file, which organizes the data so it's more human readable. Any suggestions? More on stackoverflow.com
๐ŸŒ stackoverflow.com
Nice JSON Editor for Mac?
Visual Studio Code? I use it pretty much for everything, though Iโ€™m not JSON power user. What would dedicated JSON editor do above what VS Code with JSON plugin does? More on reddit.com
๐ŸŒ r/MacOS
22
12
December 28, 2021
OK JSON - A native Mac app to format, view, query JSON
Why use this over a text editor (most have format features) or jq? More on reddit.com
๐ŸŒ r/macapps
16
46
August 31, 2021
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App Store
apps.apple.com โ€บ us โ€บ app โ€บ ok-json-viewer-formatter โ€บ id1576121509
OK JSON - Viewer & Formatter App - App Store
OK JSON is a native and scriptable JSON formatter on macOS. Itโ€™s really fast and well-integrated with macOS. The notable features from OK JSON are: - JSON structure in both tree view and text editor.
Rating: 0 โ€‹
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Jsonviewer
jsonviewer.app
JSON Viewer
A native Mac app to visualize, validate and format JSON datasets in a clean and snappy interface.
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Chrome Web Store
chromewebstore.google.com โ€บ detail โ€บ json-formatter โ€บ bcjindcccaagfpapjjmafapmmgkkhgoa
JSON Formatter - Chrome Web Store
FEATURES: - **Fast**, even on very long JSON pages - Dark mode support - Syntax highlighting - Code folding and indent guides - Clickable URLs - Raw/Parsed toggler JSON Formatter is proud ...
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App Store
apps.apple.com โ€บ us โ€บ app โ€บ jayson โ€บ id1468691718
Jayson App - App Store
Jayson is a simple yet powerful JSON viewer and editor. Features include: - Browse JSON files stored on your device. - Toggle between viewing JSON in a table or as syntax highlighted text.
Rating: 0 โ€‹
Find elsewhere
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Merge-json-files
merge-json-files.com โ€บ blog โ€บ best-json-editor-for-mac
3 Best JSON Editors for Mac (Free & Paid Options for 2025) | Merge JSON Files
April 19, 2025 - It's genuinely a viewer and formatter, not a full editor. You can make basic edits, but if you're doing heavy editing work on JSON files all day, you'll want something more capable. That said, for the vast majority of situations where you just need to inspect, validate, or clean up a JSON file, OK JSON does the job quickly and without friction. The fact that it's free and works offline makes it an easy recommendation for anyone on a Mac.
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Jless
jless.io
jless - A Command-Line JSON Viewer
Expand and collapse Objects and Arrays to grasp the high- and low-level structure of a JSON document. jless has a large suite of vim-inspired commands that make exploring data a breeze. jless supports full text regular-expression based search. Quickly find the data you're looking for in long String values, or jump between values for the same Object key. jless currently supports macOS and Linux and can be installed using various package managers.
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Homebrew
formulae.brew.sh โ€บ cask โ€บ json-viewer
json-viewer โ€” Homebrew Formulae
Cask code: json-viewer.rb on GitHub ยท Current version: 1.2.2 ยท Requirements: macOS >= 10.15 ยท
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Okjson
okjson.app
Scriptable JSON Formatter for macOS - OK JSON
Apple Silicon & macOS Tahoe ready! The ultimate JSON formatter for your Mac.
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JSON Formatter
jsonformatter.org โ€บ json-viewer
JSON Viewer Online Best and Free
Best and Secure JSON Viewer works well in Windows, Mac, Linux, Chrome, Firefox, Safari and Edge.
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App Store
apps.apple.com โ€บ us โ€บ app โ€บ json-viewer-simple โ€บ id6526147266
Json Viewer Simple App - App Store
View JSON files easily with our fast and intuitive app Discover the most efficient and intuitive way to view your JSON files with our app! Developed to provide the best experience, our app offers several features that make working with JSON files easier: Search: Quickly find any information within your JSON file.
Rating: 5 โ€‹ - โ€‹ 1 votes
Top answer
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  • Jsoneditor is a browser-based editor that you can deploy locally or use the ad-sponsored online version provided by the author. It's handy for small JSON files, and I find it the easiest and most feature-full. It will highlight broken json, but it's not a 100% compatible validator like https://jsonlint.com/ because, for example, it treats raw tabs as valid within strings although this is not allowed by the JSON spec.

  • JSONMate seems to be a usable open-source project with an online editor which probably won't be able to handle large files, but you can fork it on github, adapt to your needs and run it locally.

  • Intellij Idea and derivatives have decent JSON support, but large files take time to load.

  • SublimeText is also usable for JSON if you install the plugins for beautifying and extra features.

For windows XMLMarker does a good job as an XML and JSON visualizer, but the last version which added JSON support is a limited trial.

Disclaimer: I am not affiliated with any of these tools, authors or projects.

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Checkout Jason, although it appears to be no longer maintained since Osx 10.7, I just opened a JSON in it with Osx 10.11 and it works ok.

Please Note: since it is no longer maintained it is likely going to be unreliable.

Alternatively, I have opted for an online browser-based JSON editor:

  • http://jsoneditoronline.org/

It is surprisingly fast, allowing you to browse the tree, search values, edit values, insert values, reorder values, even duplicate values. You can even drag and drop stuff around to really get creative :) Unfortunately, you can't see the filename of the json you are editing, but you can open up new browser tabs for multiple json file editing at once.

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Dadroit
dadroit.com
Dadroit JSON Viewer
Dadroit JSON Viewer is designed to efficiently handle big JSON. View and convert large JSON on Windows, macOS, and Linux. Simplify JSON tasks today!
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GitHub
github.com โ€บ ErikKalkoken โ€บ janice
GitHub - ErikKalkoken/janice: A desktop app for viewing large JSON files. ยท GitHub
Janice is a desktop app for viewing large JSON files.
Starred by 236 users
Forked by 13 users
Languages ย  Go 98.1% | Shell 1.7% | Makefile 0.2%
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Modelo.io
modelo.io โ€บ damf โ€บ article โ€บ 2024 โ€บ 08 โ€บ 17 โ€บ 1638 โ€บ the-best-json-viewer-for-mac
The Best JSON Viewer for Mac
August 17, 2024 - Modelo offers a free, powerful software for viewing, editing and rendering 3D models online. Elevate your projects with easy-to-use tools that support a wide range of formats, enabling seamless collaboration and sharing.
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JSONLint
jsonlint.com
JSONLint - The JSON Validator
JSONLint is the free online validator, json formatter, and json beautifier tool for JSON, a lightweight data-interchange format.
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JSON Crack
jsoncrack.com
JSON Crack | Online JSON Viewer - Transform your data into interactive graphs
JSON Crack is an online JSON viewer tool designed to visualize and analyze various data formats, including JSON, YAML, CSV, XML and more.