Compress PDF
Reduce the file size of your PDF so it fits email limits and uploads faster. Everything runs in your browser — your documents are never uploaded to any server.
🔒 100% private — processed in your browser only
How PDF compression works
PDF files are often bloated by high-resolution embedded images. This tool re-processes those images at a lower resolution and quality level, which is where most of the size reduction comes from. Text and vector content stay sharp. Compression results vary — image-heavy PDFs (scans, brochures) shrink dramatically, while text-only PDFs that are already small may barely change.
When to compress a PDF
Email attachments usually cap at 20–25 MB. Government and job-application portals often limit uploads to 2–5 MB. Compressing lets you meet those limits without deleting pages. Because everything happens on your device, even confidential documents like bank statements and contracts are safe to compress here.
Frequently asked questions
Image quality is reduced slightly — that's how the size shrinks. Text stays crisp. Use "Light" for documents you'll print and "Strong" for screen-only sharing where small size matters most.
No. Unlike most online compressors, this tool processes everything inside your browser using JavaScript. Your PDF never leaves your device, making it safe for sensitive documents.
Text-only PDFs are already compact, so there's little to compress. The biggest savings come from PDFs containing photos or scanned pages.