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JSON Formatter (Jam)

Indents and structures raw JSON for reading and validation.

Artifact by Jam.dev

IndexedGPL-3.0Developer toolsNo sign-upRuns in your browser

Use it

Opens jam.dev in a new tab. Nothing to install.

You provide
JSON
You get
Formatted JSON
Account
No sign-up needed
AI
No AI: a plain tool
Your input
Processed in your browser, not uploaded (stated by the tool or its repo)
Price
Free to use
Made with
Open-source web app
Source
Open source
Link check
Answered on Oct 31, 2026

About

JSON Formatter (Jam) is an open-source web app in the developer tools category (json formatter). It opens in your browser, so there is nothing to install. You provide JSON and get formatted JSON. Your input is processed on your device and not uploaded. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (jamdotdev/jam-dev-utilities).

Category: Developer tools · json formatter

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Details

Auth
No auth
License
GPL-3.0
First seen
Oct 31, 2026
Last checked
Oct 31, 2026
Source
GitHub

More from Jam.dev

Cite this page

JSON Formatter (Jam): free online. Agent Mart. https://agentmart.dev/artifacts/json-formatter-jam (last updated 2026-10-31)