A LITTLE LESS BUSYWORK

JSON formatter and validator

Validate, format or minify JSON locally. Preserve original number tokens, including large integers, and copy or download the result.

Free · No signup · Processed in your browser

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How to use this tool

Paste JSON text.
Choose readable formatting or compact minification.
Fix reported syntax errors, then copy or download.

How it works

Readable JSON makes analytics payloads and configuration easier to inspect. This formatter validates syntax, then formats original tokens. Large integer text and duplicate keys are preserved instead of converting the document back from JavaScript objects.

What to check before using the result

Valid JSON does not prove an API schema is satisfied. Duplicate keys are preserved but downstream software can interpret them differently. Comments, trailing commas and JavaScript expressions are not valid JSON.

RFC 8259: JSON format ↗

BEFORE YOU GO

Your work stays yours.

Are my files, text or numbers uploaded?

No. This tool processes the input in your browser tab. It does not send your input to our servers. Leaving or refreshing the page clears the working input.

Do I need an account or subscription?

No account is required for this public tool. You can complete the task and download the result directly. An account is useful when you want to measure visits to your own website or manage tracked campaign links.

Can I share or link to this tool?

Yes. Use the tool link below in a tutorial, team resource list or campaign checklist. The link opens an empty tool; your private input is not included.

USEFUL THINGS ARE WORTH SHARING

A shortcut worth keeping.

Bookmark this page or share it with someone who has the same task.

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When your work goes live, see who finds it.

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