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Compress PDF

Reduce your PDF file size β€” choose a compression level, compress, and download instantly. Free and browser-based.

How to Compress a PDF

1

Upload PDF

Drag & drop or click to upload your PDF file.

2

Choose Level

Select Low, Medium, or High compression.

3

Download

Click Compress and download your smaller PDF.

Why Compress PDFs?

Email Attachments

Most email providers cap attachments at 10–25MB. Compressing large PDFs ensures your files go through without getting rejected.

Faster Uploads & Sharing

Smaller files upload and download faster on Google Drive, WhatsApp, Dropbox, and other platforms.

100% Private

Your PDF is processed entirely in your browser. It is never uploaded to any server β€” your documents never leave your device.

Frequently Asked Questions

Is this tool free?

Yes β€” 100% free with no sign-up, no watermarks, and no limits.

How much will it reduce file size?

Results vary by PDF content. Image-heavy and scanned PDFs typically see 40–80% reduction. Text-only PDFs with very few images will see less reduction since there is less image data to compress.

Will text still be selectable after compression?

No β€” this tool re-renders each page as a JPEG image to achieve real compression. The output is an image-based PDF, so text will not be selectable or copy-pasteable. If you need selectable text, use Low compression and accept a smaller reduction.

Is my PDF safe?

Yes. Your file is processed entirely in your browser using PDF.js and pdf-lib. It is never uploaded to any external server.

Can it compress a password-protected PDF?

No. Use our Unlock PDF tool first to remove the password, then compress.

Does it work on mobile?

Yes β€” works on all modern iOS and Android browsers. Large PDFs may take longer on older phones.