Compress PDF Files Online — Reduce Size Instantly

Shrink your PDF file size without losing quality. Our PDF compressor removes unused objects and rebuilds internal structures to deliver smaller files that are easy to share via email, upload to websites, or store in the cloud.

Why use this page?

  • Reduce file size by up to 90% with smart optimization
  • Text and vector graphics remain pixel-perfect
  • Batch compress multiple PDFs at once
  • Ideal for email attachments and web uploads
  • No quality loss — structural optimization only

How it works

  1. Upload one or more PDF files using the file picker or drag-and-drop.
  2. Review the file list and adjust compression settings if needed.
  3. Click "Process" to compress. A progress bar shows real-time status.
  4. Download individual files or grab everything as a single ZIP.

Frequently asked questions

Does compressing a PDF reduce quality?

Our compression focuses on structural optimization — removing duplicate objects, rebuilding cross-references, and stripping metadata. Text and vector graphics remain untouched, so visual quality stays the same.

Is there a file size limit?

You can upload PDFs up to 200 MB each. Files over 50 MB will trigger a large-file notice and may take a bit longer to process.

Can I compress multiple PDFs at once?

Yes. Select multiple files during upload and they will all be compressed in a single batch operation with per-file progress tracking.

How much can I reduce the file size?

Results vary by file. PDFs with embedded fonts and duplicate objects can often be reduced by 40–90%. Already-optimized files may see smaller reductions.

Why did my PDF barely get smaller?

Text-only PDFs are already very compact, so there is little redundant data to remove. The biggest reductions come from files with large embedded images, scanned pages, or unused fonts.

Is my PDF uploaded to a server?

No. Compression runs entirely in your browser, so your document never leaves your device — ideal for contracts, IDs, and other sensitive files.