Reduce large PDF uploads
Compress PDF is useful when a portal rejects large files or email attachments exceed size limits. The tool creates a smaller image-backed PDF from rendered pages with adjustable quality and resolution.
Tool workspace
Compress PDF Online
Reduce PDF file size in the browser with adjustable page quality, scale controls, preview, and instant download.
Account required
Sign in to use Compress PDF Online.
OmniToolbox is free to use right now, but processing tools require an account so usage stays protected and abuse-resistant.
Preview before saving
Compression can affect sharpness, so the first page preview helps you check whether text, stamps, signatures, and scanned details remain readable before using the downloaded PDF.