Json Genie

Json Genie is a fast JSON viewer, editor and formatter for Android, built from the needs of a developer who wanted a practical tool for real JSON work. Open JSON and JSONC files, view them in a clean tree structure, search keys and values, edit data, pretty-print, minify and share the result.

Really, really fast

Speed has always been one of the main goals of Json Genie. It opens small JSON files quickly and is designed to handle large nested JSON documents without getting in your way. In testing, Json Genie opened a 10 MB JSON file in under a second and handled large JSON files over 60 MB.

View and edit JSON

Json Genie gives you practical control over your JSON files. You can view, edit, add, delete, clone, move and reorder objects, arrays and values while keeping the structure clear.

Open JSON from anywhere

Open JSON from local files, shared content, pasted text, URLs and supported archives. Because Json Genie uses the standard Android file-opening flow, it can open JSON files from apps and locations available on your device, such as cloud storage, file managers and shared attachments.

Set as default JSON handler

Use Json Genie as your default JSON file opener, so you can open .json files directly from file managers, email attachments, downloads and other apps.

Search and understand JSON

Browse objects and arrays in a clear tree view. Search the current list or the entire document, jump to results and return without losing your place. Use smart filters like id: 3, game.id: 3 or city: "Austin".

Edit JSON safely

Edit strings, numbers, booleans, nulls, objects and arrays. Add, delete, clone, move and drag-reorder entries while keeping the structure clear. Unsaved-change warnings help prevent accidental data loss.

Format and share JSON

Pretty-print, beautify, minify and sort JSON keys. Share JSON as formatted text or as a file, or switch to raw text view when you need to inspect the original structure.

What you can do with Json Genie:

• Open JSON files from storage, URLs, pasted text, shared content and supported archives

• Set Json Genie as your default JSON file opener

• Work with JSON and JSONC files, including comments

• View JSON in a clean object and array tree view

• Search keys, values and paths

• Use smart search filters like id: 3, game.id: 3 or city: "Austin"

• Edit strings, numbers, booleans, nulls, objects and arrays

• Add, delete, clone, move and reorder JSON entries

• Create new JSON documents from scratch

• Open multiple JSON files in tabs

• Copy and reuse JSON entries with paste history

• Pretty-print, beautify, minify and sort JSON keys

• Share JSON as formatted text or as a file

• View raw JSON text when needed

• Check document details such as source, format, size and location

• Choose light, dark or system appearance

Built for real-world JSON work:

• Fast handling for small and large JSON files

• Tested with 10 MB JSON files and large files over 60 MB

• Clear navigation through deeply nested data

• Practical editing without fighting the interface

• Safer handling of unsaved changes

• Polished open, search, edit, paste, share and save flows

• Useful for developers, testers, students, support teams and anyone who needs to read, edit or format JSON

Json Genie helps you open, read, understand, edit and share JSON files on Android in a faster and more comfortable way. It is useful for API responses, config files, exported data, JSON attachments, test data, logs and any JSON file you need to inspect or clean up.

Json Genie is free to use. Premium is optional and removes ads, expands file/tab limits, increases history and unlocks extra themes.

Json Genie is built by a small independent developer who actively improves and supports the app.