Compress PDF Online

100% free · no signup · runs in your browser

Reduce PDF file size for email attachments, upload portals, and faster sharing. Upload a PDF, choose a compression level, and download a smaller file while keeping the document readable. The compressor works in your browser, no signup required, so everyday PDFs are easier to send.

Drop one PDF here or click to choose

Upload one PDF up to 50 MB, then choose how much to compress it.

Common uses

Shrink a PDF so it fits an email attachment limit.
Reduce scanned documents before uploading to a form or portal.
Make large reports easier to share with clients or teammates.
Compress archived PDFs to save storage space.

Frequently Asked Questions

How much smaller will my PDF get?

It depends on the file. Scanned PDFs and image-heavy documents usually compress the most.

Will the text stay readable?

Yes. Choose a balanced compression level to reduce size while keeping text and images clear enough for normal use.

Is it free and no signup?

Yes. It is free to use and does not require an account.

Can I compress PDFs on mobile?

Yes. Use any modern mobile browser to upload, compress, and download the smaller PDF.