Does 5MB.me upload my PDF?

No. Your browser reads and compresses the PDF locally. The document is not sent to a 5MB.me server.

Why can PDF compression change text quality?

Aggressive modes render pages as compressed images. That can make text less sharp or non-selectable, so Balanced mode is the safer starting point.

Can every PDF reach any target size?

No. Scanned documents and PDFs that already contain compressed images may have limited room to shrink. The result page tells you when the requested target cannot be reached.

PDF compressor

Compress PDF Files Privately in Your Browser

Reduce PDF file size without uploading sensitive documents. Choose a target, compare compression modes, and download the result from your browser.

No document upload
Balanced and aggressive modes
Custom target sizes
Works offline when installed

Drop your file here

or click to browse - PDF, JPG, PNG, WebP up to 100MB

PDFJPGPNGWebP

What browser-based PDF compression changes

A PDF can contain text, vector graphics, photographs, scanned pages, fonts, and metadata. These parts do not compress equally. Image-heavy and scanned PDFs usually offer the largest reductions, while a compact text-only PDF may already be close to its practical minimum.

5MB.me renders PDF pages locally and adjusts image resolution and quality. Balanced mode favors readability. Strong and Maximum modes trade more detail for a smaller result. The original file is never modified.

Choose a realistic target

Start with the target suggested from the original file size. If a portal gives you a specific limit, enter that size directly. A small step below the published limit leaves room for systems that calculate megabytes differently.

Review the downloaded document before submitting it. Check small text, signatures, diagrams, and scanned identification pages at normal zoom and at 200 percent.

Frequently asked questions

Does 5MB.me upload my PDF?: No. Your browser reads and compresses the PDF locally. The document is not sent to a 5MB.me server.
Why can PDF compression change text quality?: Aggressive modes render pages as compressed images. That can make text less sharp or non-selectable, so Balanced mode is the safer starting point.
Can every PDF reach any target size?: No. Scanned documents and PDFs that already contain compressed images may have limited room to shrink. The result page tells you when the requested target cannot be reached.