🗜️ PDF Compressor
Make media kits, portfolios and slide exports small enough to email. Images are downscaled and recompressed and the file structure is optimised — all on your device.
✅ Free · No sign-up
Choose a PDF or drag it here
Processed on your device — nothing is uploaded
Processed on your device — nothing is uploaded
Options
How to use the PDF Compressor
- Open a PDF and choose a preset.
- Press Compress PDF. Each embedded JPEG image is downscaled and recompressed if that makes it smaller, then qpdf rewrites the file with compressed object streams.
- Compare sizes and download.
Why creators use it
- Get a media kit under an email attachment limit.
- Shrink exported slide decks with large photos.
- Reduce scanned documents before uploading them to a form.
Good to know
- Not every PDF shrinks: files that are mostly text or already optimised may get only slightly smaller. If the result is not smaller, the tool tells you and keeps the original.
- JPEG images are recompressed. PNG-style images (Flate), JPEG 2000, JBIG2 and vector graphics are kept as they are, apart from lossless stream optimisation.
- Encrypted PDFs must be unlocked first.
Frequently asked questions
Will text stay sharp?
Yes. Text and vector graphics are never rasterised; only photos are recompressed.
Which engine is used?
pdf-lib to rewrite images and qpdf (compiled to WebAssembly) to generate object streams and recompress data streams losslessly.