Compress PDF free — reduce PDF file size, no upload

🔒 Compression runs on this device. Your PDF is never uploaded.

PDF file

LightCleans up the file structure. Text stays selectable; best for PDFs made from Word or a website. RecommendedClear on screen and in print (150 dpi). Big savings on scans and photos. StrongSmallest file (96 dpi). Good for email attachments and upload limits.

Convert to black and white (grayscale) for extra savings

With Recommended and Strong, each page is re-drawn as an optimised image, so text can no longer be selected or searched. Use Light when you need selectable text, or run the result through OCR Forge.

About Compress PDF

Compress PDF makes PDF files smaller for email and upload limits. Choose strong, recommended or light compression and compare the sizes before downloading.

How to use Compress PDF

Choose the PDF you want to make smaller and pick a compression level.

Press “Compress PDF”.

Compare the sizes and download the compressed copy.

Will compression make my PDF blurry?

Light compression keeps images sharp; strong compression gives the smallest file. Compare the sizes and check the result before you download.

Is Compress PDF free?

Yes. It is free to use, with no account, no watermark and no paywall.

Are my files uploaded?

No. It runs entirely in your browser, so your files and text stay on your device.