MIME Types
Search common file extensions and MIME types in both directions with local embedded reference data.
🔒 Runs entirely in your browser — nothing is uploadedWhat MIME Types does
MIME Types is a searchable lookup for common file extensions and media types. It helps when setting Content-Type headers, configuring uploads, writing static hosting rules, preparing test fixtures, debugging browser downloads, or checking what a file extension usually maps to. You can search in either direction: enter an extension such as .svg or .json, a MIME string such as application/pdf, or a broad keyword such as image, font, archive, or spreadsheet. Each result shows the extension, MIME type, and short description.
The reference data is embedded in the page and covers practical formats used in web development, APIs, documents, archives, fonts, media, and structured data. Clicking a result copies the MIME type so it can be pasted into code, configuration, a response header, or documentation. Keeping the lookup simple makes it quick to use while editing server rules or reviewing upload behavior.
Private browser-based workflow
All processing happens inside your browser with client-side JavaScript. The tool does not upload snippets, configuration values, generated data, query text, or copied examples to a server, and it does not require an account. That local-only model matters for developer utilities because the content pasted into them often looks like real application data: API responses, logs, environment-shaped samples, database queries, markup from drafts, or values copied from production debugging sessions. Keeping the transformation local reduces risk and keeps the interaction fast because there is no network round trip.
The interface is intentionally compact so you can paste input, adjust options, inspect output, copy it, and move back to your editor. Results should still be reviewed before being committed, shared publicly, or used in a production workflow. Browser tools are excellent for quick inspection and preparation, but they cannot understand every project convention, data classification rule, or application-specific validation requirement.
Practical tips
MIME mappings can differ across operating systems, registries, servers, and application frameworks. This page gives common values rather than legal or exhaustive registry guidance. For security-sensitive uploads, do not trust extensions alone. Check content, validate allowed types on the server, and serve user-uploaded files with safe headers. Text formats such as HTML, CSS, JavaScript, JSON, XML, CSV, and Markdown often benefit from an explicit charset, while binary formats generally should not include a text charset.
How to use
- Enter a queryType an extension such as .json or a MIME type such as application/json.
- Review matchesScan matching extensions, MIME strings, and descriptions.
- Copy valueClick a result to copy the MIME type.