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Compress PDF Online — Free & Private

Email size limits, upload restrictions, and storage quotas make large PDFs a constant headache. Our free PDF compressor reduces file size by up to 90% while keeping text, images, and links intact — all processed in your browser, so your documents stay private.

Compress PDF Online — Free & Private — Try it free

100% Secure

Files are encrypted

Auto-Delete

Removed after 1 hour

Privacy First

No data stored

How It Works

  1. 1

    Upload your PDF

    Drag a PDF file onto the tool or click to browse. The tool works with scanned documents, reports, presentations, and form PDFs.

  2. 2

    Select a compression level

    Choose Low (minimal loss), Medium (balanced, recommended), or High (maximum compression). A preview shows the estimated output size before you download.

  3. 3

    Download the smaller PDF

    Click Download. The compressed PDF opens and reads identically to the original — text is selectable, links work, and images remain sharp.

Frequently Asked Questions

How much can a PDF be compressed?+
Typical PDFs compress 60–90%. Scanned image PDFs (photos saved as PDF) compress the most. Text-only PDFs with minimal images may only reduce by 10–30%.
Does compressing a PDF affect the text quality?+
No. Text in a PDF is vector-based (not image-based), so compression only affects embedded images. Selectable text, links, and annotations are preserved at full quality.
Can I compress a PDF that has a password?+
You'll need to unlock the PDF first using our Unlock PDF tool, then compress it. Password-protected PDFs cannot be modified without the owner password.

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