File Tools

Look up MIME types for file extensions

Convert file sizes between units, calculate download times, and plan storage requirements

Rename multiple files at once using patterns and rules

Create and extract ZIP, TAR, and other archive files

Split large files into smaller chunks or merge multiple files into one.

Merge multiple PDF files into one or split a PDF into individual pages. 100% client-side — your files never leave your browser.

Count the exact number of pages in a PDF and view document metadata — all in your browser, no uploads.

Rotate PDF pages 90, 180, or 270 degrees — per page or all at once. 100% client-side, no uploads.

Stamp text watermarks like DRAFT or CONFIDENTIAL onto PDF pages with custom opacity, size, rotation, color, and position. Runs entirely in your browser.

Reduce PDF file size in-browser by packing objects into compressed streams and stripping unused metadata. 100% client-side, no uploads.

View and edit PDF title, author, subject, keywords, and creation dates in-browser. 100% client-side, no uploads.

Check a file's real type from its magic-byte signature before opening it. Detect mismatched or fake extensions, view header bytes in hex, and confirm what the file actually is, entirely in your browser.