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FastAPI · Class

GZipMiddleware

GZipMiddleware compresses eligible FastAPI responses when the client supports gzip. It can compress regular and streaming responses, with settings for response size and compression level.

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Syntax

GZipMiddleware(app, minimum_size=500, compresslevel=9, thread_minimum_size=128 * 1024, *, exclude_content_types=DEFAULT_EXCLUDED_CONTENT_TYPES)

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Source: Advanced Middleware - FastAPI. Checked 2026-11-03.