Compress PDF to 5MB Online Free

How to Compress a PDF

Upload your PDF

Drag and drop your PDF file or click to select it from your device. Your file stays in your browser — nothing is uploaded to any server.

Adjust compression settings

Choose whether to compress embedded images and set the quality level. Lower quality means smaller file size; higher quality preserves more detail.

Download the compressed PDF

Click "Compress PDF" and download the optimized file. The tool shows you exactly how much space you saved.

Why use FyleTools to compress PDFs?

100% Private

Your files never leave your device. All compression happens in your browser using WebAssembly — no server uploads, no third-party access.

Free & Unlimited

No registration, no file limits, no watermarks. Compress as many PDFs as you need, completely free.

Smart Compression

Only compresses embedded images while keeping text crisp and selectable. Metadata is cleaned up automatically for maximum space savings.

Frequently Asked Questions

Is my PDF uploaded to a server?

No. FyleTools processes everything directly in your browser using WebAssembly technology. Your file never leaves your device, making it completely safe for sensitive documents.

How much can I reduce the file size?

It depends on the PDF content. Files with large embedded images see the biggest savings — often 50–80% reduction. Text-heavy PDFs with few images may see smaller gains.

Does compression affect text quality?

No. The compression only targets embedded images. All text remains crisp, selectable, and searchable. Fonts and vector graphics are preserved exactly.

What is the difference between Compress and Optimize?

Compress PDF focuses on reducing image quality inside the PDF. Optimize PDF is a broader tool that also removes metadata and unnecessary objects. For maximum reduction, try both.

Will the text in my PDF remain selectable?

Yes. Compression only targets images within the PDF. All text remains fully selectable, searchable, and copyable.

Can I compress scanned documents?

Yes. Scanned PDFs contain large images, so they typically see the best compression results — often 50-80% file size reduction.

Does this work on mobile?

Yes. The tool runs entirely in your browser on any device. Perfect for compressing PDFs before sending via email on your phone.

Can I compress multiple PDFs at once?

Currently the tool compresses one PDF at a time. Upload each file individually for the best compression results.

Compress PDF