GraphQL Response Compressor

GraphQL query compression is the process of reducing the byte size of a GraphQL query string by removing whitespace, comments, and blank lines that are syntactically unnecessary. A GraphQL query with 50 lines of comments and blank lines can often be reduced to 10–15 lines with no change in behavior. Our graphql response compressor goes further by also calculating the GZIP wire size — the actual bytes transferred when the query is served with Content-Encoding: gzip — so you can see the true bandwidth impact of your GraphQL queries in production.

1. 1Paste or upload your GraphQL: Enter any GraphQL query, mutation, subscription, fragment, or SDL schema. The graphql response compressor accepts any valid GraphQL document — your data never leaves your browser.
2. 2Choose compression options: Select which elements to remove — comments, blank lines, whitespace normalization, block string descriptions, or collapse to a single line for persisted query ID generation. All options are safe and preserve the semantic meaning of your GraphQL.
3. 3View wire size comparison: The graphql response compressor shows a four-row comparison — original plain, minified plain, original GZIP, and minified GZIP — with visual size bars and savings percentages. Download or copy the minified output directly.

• Comment Lines: All # comment lines are removed — these are never sent to the GraphQL server and add no value in production query strings.
• Blank Lines: Empty lines and whitespace-only lines are stripped — GraphQL parsers ignore them entirely.
• Redundant Whitespace: Multiple consecutive spaces are collapsed to one, and spacing around punctuation ({ } ( ) : ,) is normalized to the minimum required.
• Block String Descriptions: Optional — """...""" SDL descriptions are preserved by default (they appear in introspection) but can be removed for runtime-only schemas.

The graphql response compressor uses a state-machine parser that correctly handles string literals (both "..." and """...""") — content inside strings is never modified. The tool does notvalidate GraphQL syntax — it processes any text input. GZIP wire size is calculated using the browser's native CompressionStream('gzip')API at the default compression level; actual server GZIP sizes may vary by ±5% depending on the server's compression level setting.