Compress PDF Online — Reduce File Size with Quality Controls
Reduce PDF file size while maintaining visual quality.
Reduce PDF file size efficiently in your web browser while maintaining sharp vector typography and image clarity. Choose between recommended, extreme, or custom compression modes to meet email attachment or portal upload limits without creating an account. Files are uploaded over HTTPS for temporary processing and automatic cleanup.
Compress PDF — At a glance
Compression results vary depending on embedded images, fonts, and existing compression in the source file. Compression is designed to reduce file size where redundant data exists, but already-optimized documents may see minimal size changes.
Reduce PDF document file sizes to meet email attachment caps and online portal upload restrictions. The compression engine optimizes internal font dictionaries and raster image streams while preserving readable typography and layout structures.
Email Attachments
Shrink heavy documents under typical 20MB or 25MB corporate mail server limits.
Application Portals
Compress resumes, tax forms, and IDs to meet strict 2MB government upload caps.
Web Publishing
Reduce web-hosted PDF file sizes for faster page loads on mobile connections.
How to compress PDF file size online
Upload large PDF
Select the PDF file you need to reduce (up to 300MB).
Select compression level
Choose between Recommended (balanced quality), Extreme (smallest size), or Low.
Compress document
Click Compress PDF to initiate the optimization pass.
Download smaller PDF
Review your size savings percentage and download the optimized PDF.
Frequently Asked Questions about Compress PDF
How much smaller will my PDF become?
Size reduction varies depending on the document structure. PDFs with uncompressed object streams or high-resolution images typically see noticeable reductions, while pre-optimized or pure text documents may have smaller gains. Compression results vary based on the original file.
Will compression make text blurry?
No. Vector fonts and typographic glyphs remain sharp. Only embedded raster images are optimized based on your chosen compression preset.
Is the compression tool free?
Yes. Standard compression is free with no registration required.
How are files protected?
Uploads transfer over HTTPS encryption in transit. Files are processed temporarily and are automatically cleaned up after processing.