Compress PDF
Shrink large PDFs so they’re easy to email and upload — ideal for scanned documents, processed privately in your browser.
Compress PDF to a specific size
Your file never leaves your browser. All processing happens on your device. Nothing is uploaded to any server.
How it works
Upload your PDF
Pick a compression level
Download the smaller PDF
What compression does
A large PDF becomes a much smaller file that is easy to email and upload. The exact saving depends on the document and the level you pick.
About this tool
Our free PDF compressor reduces your PDF file size without compromising readability. Whether you need to email a large report, upload a document to a portal with a file size limit, or simply save storage space, the tool handles it instantly in your browser. Unlike many free tiers that cap how many files you can process each day, GetFreeToolsAI has no daily task limits. Your PDF is never uploaded to any server — everything happens locally using WebAssembly technology, so your confidential documents, financial reports, and personal files stay completely private. Simply upload your PDF, choose a compression level, and download the result in seconds. It works in every modern browser including Chrome, Firefox, Safari, and Edge, with no installation, no signup, and no watermark — ever.
Why use this tool
Email-ready in seconds
Shrink a heavy PDF so it slips under email and upload size limits without a desktop app.
Choose your level
Pick Low, Medium or High to balance how small the file gets against visual quality.
Stays on your device
Compression runs in your browser with WebAssembly — confidential reports are never uploaded.
Common use cases
- Email a large scanned document or report
- Upload a PDF to a portal with a strict size limit
- Save storage on a folder of heavy PDFs
- Speed up sharing a brochure or deck
Frequently asked questions
It depends on the content. Scanned or image-heavy PDFs can shrink dramatically (often 50–90%), while PDFs that are mostly plain text may compress little since they’re already small.
To guarantee a smaller file, each page is re-rendered as a compressed image. This flattens the page, so text can no longer be selected. If you need selectable text, keep the original.
Low produces the smallest file at lower visual quality, High keeps the best quality with more modest savings, and Medium balances the two.
No. The compressed PDF has no watermark or branding.
No. Compression runs entirely in your browser, so your PDF never leaves your device.
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