FreeCompressor helps you compress PDF files and reduce PDF file size without uploading them anywhere. Big PDFs that won't fit an email or upload limit are shrunk on your own device, so the contents stay private. Choose the level that fits your document: keep text crisp and selectable, or squeeze the file as small as possible.
How to compress a PDF
- Open Compress PDF and drop in your file.
- Choose a level — Light (lossless re-save) or Strong (rasterize pages).
- Click Compress PDF and download the smaller file.
Light vs Strong compression
- Light — a lossless re-save with modest savings that keeps selectable text. Best for text documents.
- Strong — rasterizes each page into an image for a much smaller file (text becomes part of the image). Best for scanned or image-heavy PDFs where size matters most.
Frequently asked questions
Is compressing a PDF free?
Yes — free, no sign-up and no watermark.
Are my PDFs uploaded?
No. Compression runs in your browser; your PDF never leaves your device.
Which level should I choose?
Use Light to keep selectable text with modest savings, or Strong for the smallest file on scanned/image-heavy PDFs.