Compress PDF

PDF (Portable Document Format) is the universal standard for document exchange, developed by Adobe. Large PDF files often contain high-resolution images, embedded fonts, and redundant metadata that bloat file size. Our advanced PDF compression algorithm uses lossy and lossless techniques to optimize images, downsample graphics, and remove unnecessary elements while maintaining document integrity. The compression process happens entirely in your browser using WebAssembly and PDF.js, ensuring your sensitive documents never leave your device. Whether you are optimizing assets for a US-hosted site on AWS, Cloudflare, or Vercel, trimming email attachments for Gmail and Outlook, or submitting documents to federal portals, this tool keeps your files lean and your workflow fast — all without uploading anything to a server.

If you are working in the United States, file size matters for email providers like Gmail (25 MB attachment cap), Outlook, and popular US hosting platforms. Compressing images and documents before uploading to Amazon S3, Cloudflare, or Netlify keeps your bandwidth costs down and improves Core Web Vitals for American visitors on both fiber and mobile networks.

• Most US email services reject attachments above 25 MB — compress to stay under that limit without switching to Google Drive or Dropbox.
• For US-based e-commerce on Shopify, aim for product images under 200 KB to keep your Google PageSpeed score competitive.
• Social platforms popular in the US — Instagram, Facebook, X (Twitter), and LinkedIn — each re-encode uploads, so feed them the smallest high-quality source file you can.
• Many US government and healthcare portals restrict document uploads to 5–10 MB; pre-compressing PDFs avoids upload failures.

1. 1
   Upload your PDF files

   Select one or more PDF documents from your device using the upload button or drag-and-drop area.

2. 2
   Choose a compression level

   Pick the quality setting that best matches your goal, such as balanced compression for email or stronger reduction for web delivery.

3. 3
   Compress and download

   Process the PDFs directly in your browser and download the smaller files individually or together as a ZIP archive.

• No upload required — your files stay on your device, aligning with US privacy expectations
• Free forever, no sign-up or credit card — we never sell your data
• Batch process dozens of files at once — built for fast US broadband and 5G workflows
• Tuned for US-hosted sites on AWS, Cloudflare, Vercel, and Netlify
• Runs in any modern browser — Chrome, Safari, Firefox, Edge on Mac, Windows, and mobile
• No file quotas or daily limits — compress as much as your project needs