Compress PDF

Upload your PDF, choose a compression level (Light, Medium, or Aggressive), and click Compress. The tool reduces file size by optimizing internal structures, images, and fonts. Light compression keeps the best quality while Aggressive gives the smallest file.

PDFs can become large due to embedded high-resolution images, fonts, layers, metadata, and redundant objects. Scanned documents are especially large because each page is stored as a full-resolution image rather than searchable text.

Text in PDFs is stored as vector data, so it remains perfectly sharp regardless of compression level. Only embedded images may see quality reduction, and even Light compression typically produces no visible difference.

Medium or Aggressive compression works best for email. Most email providers limit attachments to 10-25 MB. Medium typically reduces file size by 40% while maintaining good quality. Aggressive can achieve 65% reduction for even smaller files.

Your PDF is processed entirely in your browser using JavaScript. The file never leaves your device — no server upload occurs. This means your documents remain completely private and secure.