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PDF Compressor

Reduce PDF file size while preserving readability. Ideal for sharing large documents over email or uploading to size-limited platforms.

What to expect:

Lossless and lossy compression options
Compress images embedded in PDF
Preserve text quality and selectable content
See before and after file sizes
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How to Compress a PDF for Free Online

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About This Tool

Free PDF compressor online — reduce PDF file size for email, upload, or storage with no quality loss, entirely in your browser. No sign-up, no server uploads. Email providers cap attachments at 10–25 MB. Government portals and online forms often require PDFs under 5 MB or 2 MB. This PDF compressor re-encodes embedded images at a lower quality level, removes redundant PDF metadata, and optimizes the internal structure to produce a smaller file. Typical compression reduces a PDF by 40–70%. Useful for students submitting applications, professionals sending reports by email, and anyone uploading documents to portals with file size limits.

How to Use

  1. 1

    Upload your PDF

    Drag and drop or click to upload the PDF.

  2. 2

    Choose compression level

    Select Low (maximum compression, lower quality), Balanced (recommended), or High (minimal compression, best quality).

  3. 3

    Download the compressed PDF

    Click Compress and download the smaller file.

Frequently Asked Questions

How much can a PDF be compressed?+
Image-heavy PDFs (scans, photo-heavy reports) compress the most — often 50–80% smaller. Text-only PDFs are already compact and may only shrink 5–20%.
Does compression reduce text quality?+
Text and vector elements are not affected by image compression. Only embedded raster images lose quality at higher compression levels. At Balanced settings, text remains perfectly sharp.

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