MIME Type Lookup
Lookup Content-Type MIME headers by file extensions (png, json, pdf, svg).
CORS Configuration
About MIME Type Lookup
The MIME Type & File Extension Directory provides instant search and reverse lookup across 1,000+ IANA-registered media types (Content-Type), file extensions (.json, .webp, .wasm, .mp4), and HTTP transmission categories.
How to Use MIME Type Lookup
Step 1
Type any file extension (e.g. .svg, .pdf, .json) or MIME type into the search bar.
Step 2
View matching MIME definitions and IANA RFC citations instantly.
Step 3
Click "Copy MIME Type".
Practical Use Cases for MIME Type Lookup
Server Header & API Response Configuration
Look up correct `Content-Type` header strings for NGINX, Apache, Express, and S3 bucket static file hosting.
HTML File Upload Accept Filtering
Find standard MIME types to configure `<input type="file" accept="image/png, application/pdf">` elements.
Input & Output Examples
Looking Up MIME Type for .wasm Extension
Query: .wasm
MIME Type: application/wasm | Category: Application | RFC: 9429 | Binary: Yes
Key Features & Performance
- ✓Comprehensive database of 1,000+ IANA MIME / Content-Type specifications.
- ✓Bidirectional search: Search by file extension (`.avif`) or MIME string (`video/mp4`).
- ✓Displays MIME category, binary/text flags, and common use cases.
- ✓100% Client-Side interactive lookup.
- ✓1-Click Copy MIME type string.
Key Terminology & Definitions
MIME Type (Multipurpose Internet Mail Extensions)
A two-part standard identifier for file formats and format contents transmitted on the internet (e.g. `type/subtype`).
Content-Type Header
An HTTP header used to indicate the original media type of the resource prior to any encoding applied for transport.