Document Optimizer

Compress PDF Online

Reduce PDF file size with adjustable quality controls. Great for email attachments, job portals, visa systems, and file-upload limits.

Fast browser-side compression Quality and scale controls No server upload needed Instant compressed download
Best for image-heavy PDFs and upload-size limits

Upload and Settings

Drag and drop a PDF file
or click to browse from your device
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-
Useful for very large PDFs when you only need the first pages compressed.
0%
Upload a PDF to begin.
0 MB
Original
0 MB
Compressed
0%
Savings

Compression Summary

This compressor works best for scanned and image-heavy PDFs. Text-native PDFs may show smaller size changes.

No compressed file yet
Run compression to see size savings and download output.
Compression completed successfully.
Processed Pages-
Original Size-
Compressed Size-
Size Reduction-
Output FormatCompressed PDF

How to Compress PDF Files

1

Upload PDF

Choose the PDF file you want to optimize for sharing or uploads.

2

Set Quality

Use quality and scale settings to balance readability and file size.

3

Compress

The tool processes each page in your browser and rebuilds a smaller PDF.

4

Download

Save your optimized PDF and use it for email, forms, and portal uploads.

Related Guides

PDF Guide
How to Reduce PDF File Size Without Losing Quality
Why PDFs get large, which quality setting to pick, and what to do with scanned documents.
Compression Guide
How to Compress Files Without Losing Quality
Learn practical compression trade-offs and how to preserve detail while reducing size.
Print Settings
Understanding Resolution, DPI, and PPI
Use the right quality and scale settings when compressed PDFs still need readable print output.
Workflow
How to Extract Text from Images Using OCR
Next step after compression: run OCR when your PDF includes scanned pages and screenshots.

Related Tools

PDF to JPG JPG to PDF OCR Document Tools Hub
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Frequently Asked Questions

Each page of your PDF is rendered to a canvas using pdf.js, then re-encoded as a JPEG-compressed image at your chosen quality level, and assembled into a new PDF using jsPDF. This reduces file size by lowering image fidelity.

No. The entire compression process runs in your browser using pdf.js and jsPDF. Your file never leaves your device.

You can adjust JPEG quality (45–95%) and render scale (1.0×, 1.3×, 1.6×). Lower quality and lower scale produce smaller files; higher values preserve more detail but reduce the size benefit.

There is no server-side limit since processing is browser-based. Large PDFs (100+ pages or print-quality originals) will process more slowly depending on your device performance.

Because the compressor re-renders pages as JPEG images, text and vector elements become raster images in the output. The PDF will display and print correctly but text will no longer be selectable or copy-pasteable.

Yes, completely free with no watermarks and no account required.

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