📕 Compress PDF
Reduce PDF file size for email or web – no upload, 100% private, lossless compression
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Free PDF Compressor – Shrink PDF Files Instantly
PureDoc's PDF Compressor helps you reduce the size of any PDF document without losing quality. Perfect for email attachments (Gmail limit is 25MB), website uploads, or saving storage space. The entire process happens in your browser – your PDF never leaves your device. That means complete privacy and security.
Why Compress PDF?
PDF files can become very large, especially when they contain scanned images, high‑resolution photos, or embedded fonts. Large PDFs are hard to share by email and take forever to upload. Our compressor optimises the internal structure of your PDF – removing redundant data, re‑compressing images, and streamlining objects – to reduce file size while keeping text and graphics sharp.
⭐ Key Features
- Lossless compression – No visible quality loss.
- No upload, no server – Works entirely in your browser.
- Fast – Usually takes 2-5 seconds.
- No watermark, no signup – Completely free.
- Preserves text, images, and links – Everything stays intact.
💡 How Much Can You Compress?
Typical reduction is 20-60%, depending on the original PDF. PDFs with many images (scanned documents, photo‑rich brochures) often get the best compression. Already optimised PDFs (like those saved as “web‑ready”) may see smaller gains. Our method uses linearisation and object stream optimisation – it's safe and reversible if you keep the original.
📌 Frequently Asked Questions
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