Free PDF Compressor — Preserve Text or Max Compression

🔒 See this tool’s privacy notes for local processing and external service details. Site analytics are described in our privacy policy.

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Compression Mode

📝 Preserve Text (lossless cleanup)

Text, fonts, and vectors are preserved. Size reduction varies and may be small for already optimized files.

🗜️ Rasterize to JPEG (maximum)

Each page becomes a JPEG. This can reduce image-heavy files more, but text becomes an image.

⚠️ Preserve-text mode keeps content selectable but may save little space. Rasterize can reduce image-heavy files more, but text becomes an image. Compare the downloaded result with the original.

Quick guide

What can PDF Compressor help you do?

Free PDF compressor. Choose preserve-text cleanup or rasterize pages to JPEG for stronger size reduction. Results vary by document; browser-based with no upload.

Best for

Use Preserve Text for a report exported from a word processor; try Rasterize to JPEG for a scan when image-only pages are acceptable. A smaller file is not automatically a better submission: a searchable PDF becomes a set of page images in raster mode. Keep the original for signatures, forms and accessibility.

How to use it

Select a PDF and check its filename and page count before pressing Compress. Raster presets set JPEG Quality and Max Width together: Low is 0.90/2048 px, Medium is 0.70/1500 px, and High is 0.50/1024 px. Inspect the actual advanced values after making manual changes; the preset label alone does not describe them.

How to read the result

Compare Original and Compressed sizes, then open the downloaded PDF in another viewer. Check tiny text, page edges and any barcode. Preserve Text may produce a larger file; keep the original if it does. The width setting controls page rendering, not a target file size, and this tool cannot automatically meet a portal’s upload limit.

Privacy and limits

The selected PDF is processed in the browser. The tool downloads pdf-lib and, for raster mode, PDF.js from jsDelivr, so it is not a guaranteed offline workflow. Clearing selected metadata fields is not a complete privacy scrub. Downloaded PDFs remain on your device after you close the tab.

There is no password-entry workflow. Keep signed originals: rewriting a PDF does not preserve a trustworthy digital signature. Raster mode does not retain selectable text or interactive fields. Test the downloaded file against the recipient’s requirements before sending it.

Frequently Asked Questions

Which mode should I pick?

For Word/PowerPoint/HTML exports (text-based PDFs), pick Preserve Text. For scanned documents or image-heavy PDFs, pick Rasterize for maximum compression.

Why does preserve-text not compress more?

It only removes redundant objects, restructures object streams, and strips metadata. Text and images are untouched.

How much quality loss in Rasterize?

Depends on JPEG quality (Low=90, Medium=70, High=50). Medium is visually nearly identical to the original.

Is my file uploaded?

No. Everything runs in your browser.

How large a file?

Up to ~50MB recommended.