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Compress PDF
Shrink file size by recompressing images while keeping text sharp.
Choose a fileLoading the tool…
Make PDFs small enough to email or upload. ModifyPDF recompresses and downsamples embedded photos, removes unused data, and leaves text and vector graphics untouched.
How to compress a PDF
- Choose the PDF to compress.
- Pick Extreme, Recommended or Light compression.
- Click “Compress PDF” and download the smaller file.
Frequently asked questions
How much smaller will my PDF get?
It depends on the content. Image-heavy files often shrink by 50–90%. Text-only files are usually already small.
Will text become blurry?
No. Only embedded images are recompressed; text stays crisp and searchable.
Are my files uploaded to a server?
No. ModifyPDF processes files with JavaScript inside your browser. Your documents never leave your device, and nothing is stored after you close the page.