Free Compress PDF Online (Reduce PDF Size)
Use this free tool to compress a PDF and reduce its file size in your browser. Private — your file is never uploaded.
What is Compress PDF?
Compress PDF reduces a PDF's file size by re-rendering its pages as compressed images at a quality you choose. It works best for scanned or image-heavy PDFs (text-only PDFs may not shrink). Everything is processed in your browser, so the file is never uploaded.
How to use this tool
- Upload a PDF file.
- Choose the compression quality.
- Click Compress PDF.
- Download the smaller PDF.
Features
- Reduce PDF file size
- Adjustable quality
- Shows original vs compressed size
- Best for scanned / image-heavy PDFs
- Browser-based processing (no upload)
This tool runs in your browser. Your files and text are not uploaded to our servers, and we do not store your input.
Frequently asked questions
Are my files uploaded?+
No. The PDF is processed in your browser and never uploaded.
Why didn't my text PDF get smaller?+
This tool compresses by re-rendering pages as images, which helps scanned/image PDFs most. Text-only PDFs are already small and may not shrink.
Will the text still be selectable?+
Because pages are rasterized to images, selectable text is not preserved — use this when smaller size matters more than text selection.
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