MIME type lookup

Look up a MIME type by file extension or vice versa.

MIME workspace

Edit, inspect, copy

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.jsonapplication/json

More MIME guides

MIME Type Lookup OnlineLook up a MIME type by file extension or an extension by MIME type online. A quick reference for headers, uploads and previews.How to Find a File’s MIME Type: Extension, Header and Content DetectionFind a file MIME type from an extension, HTTP header or local bytes using file, PHP, Python and browser APIs—and understand when each result can be trusted.Common MIME Types ExplainedA reference to common MIME types for web work — JSON, HTML, CSS, images, PDF and more — and what each one signals.MIME Types for File Uploads: Validation Without Trusting the HeaderValidate file uploads with MIME allow-lists, server-side content detection, size limits and safe storage. Learn why Content-Type, extensions and magic bytes can disagree.MIME type for api responses - MIME type lookup online guideLearn how to use MIME type lookup for mime type lookup, file mime type checker, extension mime type. Practical browser-based workflow with no sign-up and clear output.MIME type vs file extension - MIME type lookup online guideLearn how to use MIME type lookup for mime type lookup, file mime type checker, extension mime type. Practical browser-based workflow with no sign-up and clear output.

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mime type lookup on DevToolGrid

MIME type lookup is built for the search intent behind "mime type lookup": a fast, browser-based developer tool that helps with API debugging, data formatting and everyday coding tasks without sign-up.

What this online developer tool is best for

Use it when you need quick results for file mime type checker, extension mime type. The page has its own URL, localized metadata and related tools so developers can bookmark it, share it and return to the same workflow.