---
title: "PDF Compress"
description: "Reduce PDF file size in your browser. Low rewrites the internal structure and leaves images untouched; Medium re-encodes them; High re-encodes and scales them down for the smallest file. Text, pages and layout are unchanged. Nothing is uploaded."
url: https://findutils.com/pdf/pdf-compress/
category: pdf
---

# PDF Compress

Reduce PDF file size in your browser. Low rewrites the internal structure and leaves images untouched; Medium re-encodes them; High re-encodes and scales them down for the smallest file. Text, pages and layout are unchanged. Nothing is uploaded.

**Use this tool:** [PDF Compress](https://findutils.com/pdf/pdf-compress/)

## Programmatic access

- Browser-only: this tool works on a file, the DOM, or a browser API and has no REST or MCP id.

## Why use PDF Compress?

Large PDF files can be difficult to share via email or upload to websites with file size limits. Our PDF Compress tool reduces file size while maintaining readability, all without uploading your files to any server.

## Tips for Better PDF Compression

- PDFs with high-resolution images benefit most from compression. Text-only documents are often already compact.
- Start with Medium compression. Switch to High only if you need further reduction and can tolerate a slight quality decrease in images.
- If your PDF contains scanned pages, consider reducing the scan resolution before creating the PDF for even smaller files.
- Combine compression with our PDF Delete Pages tool to remove unnecessary pages and reduce size further.
- After compressing, open the result to verify image clarity meets your needs before sharing or uploading.

## Frequently Asked Questions

### Is my PDF file secure?

Yes, completely secure. All processing happens directly in your browser. Your PDF files are never uploaded to any server.

### How much can I reduce the file size?

Results vary depending on the PDF content. PDFs with many images typically see the best results. Text-heavy PDFs may see smaller reductions.

### Will compression affect the quality?

The 'Low' compression maintains best quality with moderate size reduction. Higher compression levels may slightly reduce image quality for better size savings.

### Why is my PDF not getting smaller?

Some PDFs are already well-optimized. If your PDF contains mostly text or is already compressed, there may be limited room for further reduction.

### What is the maximum file size I can compress?

Since all processing happens in your browser, the limit depends on your device's available memory. Most modern devices handle PDFs up to 100 MB without issues. For very large files, try compressing in batches after splitting with our PDF Split tool.

### Can I compress multiple PDFs at once?

Currently, the tool processes one PDF at a time to ensure optimal compression. You can compress files back-to-back without any cooldown or usage limits.

### Does compression remove any pages or content?

No pages, text or layout are removed or moved. Low leaves embedded images untouched and only rewrites the internal structure. Medium re-encodes images at reduced quality. High re-encodes them and scales them down as well, so photographs and screenshots can look softer. The tool shows the before and after sizes so you can judge the trade before downloading.

### Does this tool require a signup with no limits?

No. FindUtils PDF Compress works with no signup, no watermarks, no daily limits. Your files stay on your device the entire time.

### Which compression level should I choose?

Use Low for documents you need to print or present, as it preserves the highest image quality. Medium works well for everyday sharing. High is best when file size matters most, such as email attachments with strict size limits.

### Can I compress a password-protected PDF?

The tool can process PDFs that allow viewing. If a PDF has editing or printing restrictions but is viewable, compression will work normally. Fully encrypted PDFs that require a password to open must be unlocked first.

## Related Tools

- [PDF Merger](https://findutils.com/pdf/pdf-merger/)
- [PDF Split](https://findutils.com/pdf/pdf-split/)
- [PDF Rotate](https://findutils.com/pdf/pdf-rotate/)
- [PDF Delete Pages](https://findutils.com/pdf/pdf-delete-pages/)
- [PDF Organize](https://findutils.com/pdf/pdf-organize/)
- [PDF Editor](https://findutils.com/pdf/pdf-editor/)
- [PDF to Image](https://findutils.com/convert/pdf-converter/)
- [Word to PDF Converter](https://findutils.com/convert/word-to-pdf/)