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GraphQL Formatter

Pretty-print GraphQL queries, mutations, and SDL using the official graphql/language parser.

Free No signup Client-side Privacy friendly

Loading GraphQL parser...

How to use

  1. 1 Paste a GraphQL query, mutation, subscription, or SDL.
  2. 2 Beautify reformats with the official <code class="rounded bg-slate-100 px-1 text-xs dark:bg-slate-800">graphql/language</code> printer.
  3. 3 Minify strips whitespace and comments for compact transport.
  4. 4 Parse errors include the line and column.

Why use this tool

  • Powered by the official <code class="rounded bg-slate-100 px-1 text-xs dark:bg-slate-800">graphql/language</code> parse and print functions — output is canonical SDL.
  • Loaded on demand — the parser only downloads when you start typing.
  • Both directions — beautify for repo, minify for transport.
  • Pure client-side — your query never leaves the browser.

Frequently asked questions

Does this support GraphQL SDL (schema)?

Yes — SDL (Schema Definition Language) is parsed and printed identically. Use it to format full schemas including types, directives, and unions.

Why does the first format take a second?

The GraphQL parser library loads lazily on first input. Subsequent formats are instant.

Will fragments and variables be reordered?

No — the printer preserves your declaration order. Only whitespace and comma layout change.

Summary

GraphQL Formatter is a free developer utility by Zerethon Tools. Pretty-print GraphQL queries, mutations, and SDL using the official graphql/language parser. Runs entirely in the browser — no signup, no upload.

Category
Developer
Pricing
Free
Privacy
Browser-based
Signup
Not required

Privacy

Your data never leaves your browser unless explicitly stated. GraphQL Formatter runs entirely client-side — no server upload, no logging, no tracking of your input.

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