How do I compress a PDF to under 100KB?

Upload your PDF, select "Extreme" compression level, and click Compress. Our tool can reduce most PDFs to under 100KB while maintaining readability.

Is my PDF secure when compressing?

Yes! ExactPDF processes all files locally in your browser. Your PDF never leaves your device - we never upload or store your documents.

Can I compress multiple PDFs at once?

Yes! Toggle "Batch Mode" to compress multiple PDF files simultaneously. All processing happens locally on your device.

Will compression reduce PDF quality?

You control the quality-size tradeoff. Choose from 4 compression levels: Low (best quality), Medium (balanced), High (good quality), and Extreme (smallest size).

Does this work offline?

Yes! Once the page loads, you can compress PDFs even without an internet connection since all processing happens in your browser.

压缩 PDF

100% Private

100% Local

No Signups

批量模式

压缩 PDF

在保持质量的同时减小文件大小

🔒 无需上传

压缩级别

Tools.compress.estimated: ~30%

Common.uploadTitle

Common.uploadSubtitle

Common.selectBtn PDF

100%隐私

即时

无需上传

Max file size: 150MB

How to Compress PDF Without Losing Quality

Step-by-step guide to reduce PDF size while maintaining readability.

Tutorial

Compression

Compress PDF to 100KB Free

Get your PDF under 100KB for email attachments and form uploads.

Tutorial

Size Limit

Compress PDF for Government Portal

Meet strict file size requirements for government and official portals.

Guide

Government

压缩 PDF

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