Compress PDF
Shrink a large PDF down to a smaller file size — instantly in your browser.
No upload No signup Works in browser Free
Drop your file here
or click to browse — nothing is uploaded
How to use
- 1Drop a PDF or click to browse your files.
- 2Pick a compression level: low, medium, or high.
- 3Click "Compress PDF" and download the smaller file.
Compress PDF — why it works this way
Large PDFs are usually large because of embedded images. This tool re-renders each page as an optimized JPEG at your chosen quality and rebuilds the PDF from those images — entirely in your browser. It works best on scanned or image-heavy PDFs; because pages become images, text is no longer selectable in the output.
Is my file uploaded? No. Everything happens locally in your browser using the Canvas/File APIs — your file is never sent anywhere.
FAQs
Is my PDF uploaded anywhere?+
No. Compression happens entirely in your browser.
Will this affect text I can select/search?+
Yes — pages are rasterized to images to reduce size, so text becomes part of the image and is no longer selectable or searchable.
Which level should I pick?+
"Low" keeps the most quality with modest savings; "High" gives the smallest file but more visible compression artifacts.