Jayson

Jayson

JSON viewer and editor

378 ratings
81 reviews
#75 in free Developer Tools
๐Ÿ› ๏ธ Developer Tools
Free
In-App Purchases

Details

  • Released
  • Updated
  • February 2, 2019
  • October 15, 2021
Jayson screenshot #1 for iPhone
Jayson screenshot #2 for iPhone
Jayson screenshot #3 for iPhone
Jayson screenshot #4 for iPhone
Jayson screenshot #5 for iPhone
iphone
ipad
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About

This app allows you to view and edit JSON files directly on your device. It offers features like tabbed browsing, split-screen comparisons, and integration with Siri Shortcuts and the Share Sheet for easy JSON parsing and management.

โœ“Browse JSON files
โœ“Table or syntax highlighted text view
โœ“Tabbed interface
โœ“Multiple splits for comparison
โœ“Siri Shortcuts integration
โœ“Share Sheet Actions
โœ“URL schemes
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What users say

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What's New in Jayson

1.4.2

October 15, 2021

Fixes an issue where the list of breadcrumbs weren't correctly updated after selecting a breadcrumb. This was also the root cause for a common crash.

1

In-App Purchases

$1.99

Unlock Everything

Unlocks all features of the app

Charts

Top Free

๐Ÿ“‰ย 75-2

Developer Tools

This app dropped -2 positions in Developer Tools chart.

Last updated on July 20, 2026.

User reviews

Ts peak cuz it lets me fix my fnf mods to be up to date

Yes

Peak

It helped out a ton especially this game called fnf with its new update some mods donโ€™t work on mobile but with this app it works to change the api and In general so thanks whoever made this :3

Ty

Ty for fixing Fnf

Where is the search option?

I cannot find a way to search in a file.

Awesome!

Iโ€™d like to request a feature: being able to collapse an object or an array: {
"big_object": {
/* a lot of properties here */
}
}

Developer apps

User experience

๐Ÿž

Reported Bugs

6 issues

App crashes when opening large JSON files (89MB+)

Bug

Crashes on regular use despite functionality

Bug

Device freezing for extended periods

Bug

Safari compatibility broken in recent updates

Bug

Navigation back through JSON structure is unreliable

Bug

Accidental file exit when attempting to navigate

Bug
โœจ

Requested Features

9 requests

Search/find functionality within files

Feature

JSON editing and modification capabilities

Feature

XML format support

Feature

Split-view for comparing different arrays

Feature

Export functionality for edited JSON

Feature

Comment recognition in JSON files

Feature

Plain text editor option

Feature

Improved file size handling for large documents

Feature

Better navigation controls on mobile devices

Feature

FAQ

What does Jayson do?

Jayson is a mobile application designed for viewing and editing JSON files. It provides a user-friendly interface to browse, parse, and manage JSON data directly on your device, supporting various viewing modes and comparison tools.

What are the key features of Jayson?

Key features include browsing JSON files, toggling between table and syntax-highlighted text views, a tabbed interface for easy navigation, split-screen functionality for document comparison, and integration with Siri Shortcuts and Share Sheet Actions for efficient JSON parsing.

Is Jayson free to use?

The app offers a free version with core JSON viewing and editing capabilities. Certain advanced customization features, such as switching themes, changing app appearance, and opening more than two tabs, require an "Unlock Everything" in-app purchase.

What devices is Jayson compatible with?

The app is designed for mobile devices and supports features like multiple windows on iPad for enhanced browsing and editing of JSON documents. It also integrates with system-level features like Siri Shortcuts and the Share Sheet.

How can I use Jayson to manage JSON data?

You can use Jayson to browse JSON files stored on your device, parse text or URLs into JSON format, and utilize Siri Shortcuts or Share Sheet Actions for quick JSON processing. The app also allows you to store imported files in a chosen location on your device.