FileHook logoFileHook
Try it
Compress PDF · Free · Browser-based

Compress a PDF —lossless, in your browser

Shrink your PDF without re-encoding images. Browser-based, no upload, no quality loss.

Drop a PDF here
or click to browse — up to 50 MB
HOW IT WORKS
1

Drop your PDF

Drag and drop a PDF or click to browse.

2

Compress

We rewrite the file with object streams. No quality loss.

3

Download

See the size delta and download the smaller PDF.

Compressing PDFs — FAQ

How does the compression work?+

We rewrite the PDF with object streams and a compact cross-reference table — the underlying library's standard save format. Most savings come from de-duping and stripping cruft. The text and images stay byte-identical.

Will the quality drop?+

No. This is a lossless rewrite — no image re-encoding, no font subsetting that loses glyphs. The visual output is byte-identical.

Why didn't my PDF get smaller?+

If your PDF was already saved with object streams (most modern PDFs are), there's not much to gain. We'll tell you the result either way.

Ready to edit your PDF?

Drop a file in and start typing. No signup needed to edit.

Edit a PDF now
OTHER PDF TOOLS

Merge PDFs

Combine multiple PDFs into one. Drag to reorder, click to merge.

Open

Split PDF

Break a PDF into multiple files by page ranges or every N pages.

Open

Rotate PDF

Rotate any page 90°, 180°, or 270°. Permanently saved on download.

Open

Reorder PDF Pages

Drag pages into the order you want. Browser-based, no upload.

Open