Free MIME Type Lookup Developer Tool Online
Find MIME types by file extension or look up file extensions for content types used in HTTP and file uploads.
IN: Extension or MIME type · OUT: Matching MIME types · RUNS: 100% in your browser
.html
text/html
.css
text/css
.csv
text/csv
.txt
text/plain
.js
text/javascript
.json
application/json
.xml
application/xml
application/pdf
.zip
application/zip
.gz
application/gzip
.doc
application/msword
.docx
application/vnd.openxmlformats-officedocument.wordprocessingml.document
.xls
application/vnd.ms-excel
.xlsx
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
.png
image/png
.jpg / .jpeg
image/jpeg
.gif
image/gif
.svg
image/svg+xml
.webp
image/webp
.ico
image/x-icon
.mp3
audio/mpeg
.wav
audio/wav
.mp4
video/mp4
.webm
video/webm
.woff
font/woff
.woff2
font/woff2
.ttf
font/ttf
.otf
font/otf
.form-data
multipart/form-data
.url-encoded
application/x-www-form-urlencoded
Frequently asked questions
What is a MIME type used for?+
A MIME type (also called a Content-Type) tells a browser or application what kind of data a file or HTTP response contains, so it knows how to handle it — for example, rendering text/html as a web page or offering application/pdf as a download.
Where do I set a MIME type?+
Commonly in the Content-Type HTTP response header when serving a file, or in the 'accept' attribute of an HTML file input to restrict which file types a user can upload.
What's the difference between application/json and text/json?+
application/json is the correct, officially registered MIME type for JSON data; text/json is a non-standard variant sometimes seen in older systems but shouldn't be used in new implementations.
Why do some file types have multiple possible MIME types?+
Certain formats have both an older, less specific type and a newer, more precise one (for example plain 'text/javascript' vs the historical 'application/javascript') — server configuration and browser conventions determine which is actually used.
Is this list of MIME types complete?+
It covers the most commonly needed MIME types for web development. For the complete official registry, IANA maintains the authoritative list of all registered media types.
Does this tool detect the MIME type of a file I upload?+
No, this is a static reference lookup by extension or type name — it doesn't inspect actual file contents or accept file uploads.