Compress PDF
Shrink a PDF's file size without shipping it to a server.
Large PDFs are slow to email and awkward to upload. Compress PDF recompresses the images inside your document to cut its size while keeping the pages readable.
Everything happens in your browser — your file is never uploaded to a server, so it stays private and it's fast.
How to compress pdf
- 1
Open your PDF
Drop your PDF into the editor — it loads instantly, right in the page.
- 2
Compress
Choose Compress from the File menu; the images are recompressed in place.
- 3
Download
Save the smaller PDF. Nothing was uploaded — the work happened on your device.
- ✓No upload — the file never leaves your browser
- ✓Recompresses embedded images, the usual size hog
- ✓Free to try; no account needed to compress
Frequently asked questions
- Is my file uploaded anywhere?
- No. Compression runs entirely in your browser; the PDF is never sent to a server.
- Will it ruin the quality?
- It recompresses images to balance size and clarity; text stays sharp because it isn't rasterized.