And even easier, with Safari 5: https://github.com/rfletcher/safari-json-formatter

Answer from John Bachir on Stack Overflow
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App Store
apps.apple.com โ€บ us โ€บ app โ€บ json-peep-for-safari โ€บ id1458969831
JSON Peep for Safari App - App Store
Thanks for creating this extension for Safari. It's a make-or-break sort of extension for me. While working I need to view raw JSON output and this formatter makes life much more convenient. ... Dude this is awesome, I love how simple and intutuive it is to use, I just have one suggestion ;)Make a Path finder.
Rating: 0 โ€‹
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GitHub
github.com โ€บ acrogenesis โ€บ jsonview-safari
GitHub - acrogenesis/jsonview-safari: A port of the JSONView Firefox extension that formats and syntax highlights JSON viewed inside of the browser.
A port of the JSONView Firefox extension that formats and syntax highlights JSON viewed inside of the browser. - acrogenesis/jsonview-safari
Starred by 293 users
Forked by 35 users
Languages ย  CSS 54.0% | JavaScript 46.0%
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App Store
apps.apple.com โ€บ us โ€บ app โ€บ prettyjson-for-safari โ€บ id1445328303
prettyJSON for Safari App - App Store
A free, private, open source JSON Pretty Printer for Safari! No tracking, no in-app purchases, no nonsense. Pretty format JSON data in Safari with this extension and a simple toggle button.
Rating: 0 โ€‹
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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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JSON Formatter
jsonformatter.org โ€บ 1fa9f4
awesome
Free JSON Formatting Online and JSON Validator work well in Windows, Mac, Linux, Chrome, Firefox, Safari, and Edge.
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Reddit
reddit.com โ€บ r/swiftui โ€บ best safari json formatter?
r/SwiftUI on Reddit: Best Safari JSON formatter?
October 18, 2022 -

Swift Programmers: Do you have a preferred JSON formatting extension for Safari or do you just use Chrome? I'd like something that formats & offers expansion triangles for exposing/hiding parts of the JSON. Thanks for recommendations!

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GitHub
github.com โ€บ greew โ€บ jsonviewer
GitHub - greew/jsonviewer: Safari extension that allows you to preview your JSON responses in an easy-to-read format.
Safari extension that allows you to preview your JSON responses in an easy-to-read format. - greew/jsonviewer
Author ย  greew
Find elsewhere
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PcMac Store
pcmacstore.com โ€บ en โ€บ software โ€บ 1458969831 โ€บ json-peep-for-safari
JSON Peep for Safari for Windows Pc & Mac: Free Download (2023) | Pcmacstore.com
JSON Peep for Safari Download and Install for your computer โ€” A Safari Extension to view JSON in a readable format. Smooth and simple. Nothing more....
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Jsonview
jsonview.com
JSONView - View JSON in Firefox and Chrome | BenHollis.net
A Firefox and Chrome extension that pretty-prints JSON data.
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Reddit
reddit.com โ€บ r/apple โ€บ guys i'm looking for a json view extension for safari, do you guys know any?
r/apple on Reddit: Guys I'm looking for a JSON view extension for safari, do you guys know any?
November 21, 2015 - Here it is you want it too: Go to this link https://github.com/acrogenesis/jsonview-safari download the ZIP file, and install it...
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App Store
apps.apple.com โ€บ us โ€บ app โ€บ format-json-for-safari โ€บ id6745445528
โ€ŽFormat JSON for Safari on the App Store
May 5, 2025 - Format JSON โ€“ Smart JSON Viewer for Safari Format JSON is a powerful Safari Extension that automatically detects and beautifully formats raw JSON content right in your browser. Designed with developers in mind, it enhances productivity and ...
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Team Treehouse
teamtreehouse.com โ€บ community โ€บ is-there-any-good-json-extension-on-safari-browser
Is there any good JSON extension on Safari browser? (Example) | Treehouse Community
May 27, 2015 - Is there any good JSON extension on Safari browser? 3,072 Points ยท Or Kramer ยท 3,072 Points December 31, 2015 12:00am ยท You can try jason-formatter : https://github.com/rfletcher/safari-json-formatter ยท here is a link for download section: https://github.com/rfletcher/safari-json-formatter/downloads ยท
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Jayson
jayson.app
Jayson
Use the share sheet extension to view JSON from other apps, including Safari.
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Reddit
reddit.com โ€บ r/iosapps โ€บ just released advanced json viewer a safari extension, works for macos, ios, and visionos
r/iosapps on Reddit: Just released Advanced JSON Viewer a Safari Extension, works for macOS, iOS, and visionOS
August 17, 2024 - This subreddit is the largest and best hub for the community! Members ยท upvotes ยท ยท comments ยท Just released Advanced JSON Viewer Safari Extension for macOS, iOS, and visionOS ยท
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GitHub
github.com โ€บ rfletcher โ€บ safari-json-formatter
GitHub - rfletcher/safari-json-formatter: A Safari extension which makes valid JSON documents human-readable.
A Safari extension which makes valid JSON documents human-readable. - rfletcher/safari-json-formatter
Starred by 844 users
Forked by 95 users
Languages ย  JavaScript 93.0% | Ruby 7.0%
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Reddit
reddit.com โ€บ r/macos โ€บ json formatter for safari 13
r/MacOS on Reddit: JSON formatter for Safari 13
October 25, 2018 -

https://apps.apple.com/us/app/json-peep-for-safari/id1458969831?mt=12

I just discovered this. I tend to live in in Safari, but Safari 13 broke the JSON formatter I was using so I was forced into Chrome. Thank you to the developer!

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Medium
corradoignoti.medium.com โ€บ beautify-api-json-output-in-safari-1a984b80b383
Beautify API json output in Safari - Corrado Ignoti - Medium
October 11, 2021 - After some googling I found JSON Peep: โ€œA Safari Extension to view JSON in a readable format. Smooth and simple.
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App Store
apps.apple.com โ€บ us โ€บ app โ€บ json-formatter-for-safari โ€บ id6447485854
JSON Formatter for Safari App - App Store
Makes JSON readable in a tree structure when you load it in a browser tab. FEATURES: โ€“ Powerful, Simple and Fast โ€“ Syntax highlighting โ€“ Collapsible and expandable trees โ€“ Toggle between beautified and raw data โ€“ Dark mode MANAGING ...
Rating: 0 โ€‹