Are my PDF files uploaded to a server?

No. All PDF operations run entirely in your browser using PDF.js. Your files never leave your device.

What is the maximum PDF file size?

There is no imposed file size limit. Performance depends on your browser and device memory. Very large files (100MB+) may be slower.

Can I use these tools on mobile?

Yes. All PDF tools work on modern mobile browsers, though desktop is recommended for workflows involving many files.

Work with PDF Files Online

PDF files are the universal document format for contracts, reports, invoices, and presentations, but working with them usually requires expensive desktop software or cloud tools that upload your files to a server. devtoolkit.sh provides a complete set of free, browser-based PDF tools that keep your files private. Merge multiple PDFs into one document, split a large PDF into individual pages or custom ranges, compress a PDF to reduce its file size, and rotate pages to fix orientation — all without installing anything or sending your files anywhere. This is the ideal toolset for professionals handling confidential documents, developers building document workflows, and anyone who regularly works with PDF files.

++PDF Merge

Combine multiple PDF files into a single document.

CUTPDF Split

Extract a range of pages from a PDF into a new file.

ZIPPDF Compress

Re-serialize and optimize PDF structure to reduce file size.

<->PDF Rotate Pages

Rotate all pages or individual pages in a PDF by 90, 180, or 270 degrees.

FAQ

Are my PDF files uploaded to a server?: No. All PDF operations run entirely in your browser using PDF.js. Your files never leave your device.
What is the maximum PDF file size?: There is no imposed file size limit. Performance depends on your browser and device memory. Very large files (100MB+) may be slower.
Can I use these tools on mobile?: Yes. All PDF tools work on modern mobile browsers, though desktop is recommended for workflows involving many files.