A MIME type (Multipurpose Internet Mail Extensions) identifies the format of a file. It appears in HTTP Content-Type headers and tells the browser or client how to handle the data. Example: application/json, text/html, image/png.

What MIME type should I use for JSON?

Use application/json. Avoid text/json — while some servers send it, the correct IANA-registered type is application/json.

What is the MIME type for PDF files?

application/pdf. For CSV files it is text/csv. For ZIP archives it is application/zip. For WebP images it is image/webp.

What is the difference between text/plain and application/octet-stream?

text/plain tells the browser to display the content as text. application/octet-stream is the generic binary type that tells the browser to download rather than display the file, used when the specific type is unknown.

MIME Type Reference

A searchable reference of MIME types (media types) mapping file extensions to their correct Content-Type values. Covers text, image, audio, video, application, font, and multipart types. Search by file extension (.pdf, .json) or by type name (application/pdf). Includes notes on browser support and common usage.

Runs entirely in your browser — your input is never uploaded, stored, or logged.

Search by file extension or MIME type to find the correct Content-Type header value for your API or web server. For a full HTTP status code reference, see the HTTP Status Code Reference.

Examples

File extension lookup

Input

.pdf

Output

application/pdf

Frequently Asked Questions

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Extension	MIME Type	Category
.html	text/html	Text
.css	text/css	Text
.csv	text/csv	Text
.txt	text/plain	Text
.xml	text/xml	Text
.ics	text/calendar	Text
.js	text/javascript	Text
.ts	text/typescript	Text
.json	application/json	Application
.jsonld	application/ld+json	Application
.pdf	application/pdf	Application
.zip	application/zip	Application
.gz	application/gzip	Application
.tar	application/x-tar	Application
.7z	application/x-7z-compressed	Application
.rar	application/vnd.rar	Application
.doc	application/msword	Application
.docx	application/vnd.openxmlformats-officedocument.wordprocessingml.document	Application
.xls	application/vnd.ms-excel	Application
.xlsx	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet	Application
.ppt	application/vnd.ms-powerpoint	Application
.pptx	application/vnd.openxmlformats-officedocument.presentationml.presentation	Application
.wasm	application/wasm	Application
.bin	application/octet-stream	Application
.jpg	image/jpeg	Image
.png	image/png	Image
.gif	image/gif	Image
.webp	image/webp	Image
.svg	image/svg+xml	Image
.ico	image/x-icon	Image
.bmp	image/bmp	Image
.tiff	image/tiff	Image
.avif	image/avif	Image
.mp3	audio/mpeg	Audio
.wav	audio/wav	Audio
.ogg	audio/ogg	Audio
.flac	audio/flac	Audio
.aac	audio/aac	Audio
.webm (audio)	audio/webm	Audio
.mp4	video/mp4	Video
.webm (video)	video/webm	Video
.avi	video/x-msvideo	Video
.mov	video/quicktime	Video
.mkv	video/x-matroska	Video
.woff	font/woff	Font
.woff2	font/woff2	Font
.ttf	font/ttf	Font
.otf	font/otf	Font

Extension

MIME Type