Compress PDF
Reduce PDF File Size Online While Maintaining High Quality
Drag and Drop PDF files here
Fast, 100% private in-browser processing. Your files never leave your device.
Shrink large PDF documents into compact files ready for email, messaging, or web uploads. Enjoy intelligent image optimization and font subsetting completely in your browser.
How to use Compress PDF
Select PDF
Choose or drop the PDF file you want to compress.
Select Compression Level
Pick from Recommended, High, or Extreme compression settings based on your clarity requirements.
Download Compressed PDF
Click 'Compress PDF' and download your optimized document with reduced megabytes.
Key Features & Capabilities
Smart Size Reduction
Balances image downsampling, vector cleanup, and metadata stripping to dramatically shrink file size while keeping text sharp.
Privacy First
Unlike other online compressors that send your financial reports or passports to cloud servers, OM PDF compresses 100% on your device.
Instant Visual Size Comparison
View the exact original vs. compressed size and the percentage of saved storage immediately after processing.
Fast Local Processing
Optimized WebAssembly algorithms finish compression in seconds without upload wait times.
Frequently Asked Questions
Is PDF compression free on OM PDF?
Yes, 100% free with no sign-up, no subscriptions, and no file limits.
Will compression make text blurry?
No. Vector text remains crystal clear; compression primarily optimizes embedded high-DPI imagery and unused metadata.
How much can I reduce my PDF size?
Most PDFs with images can be reduced by 40% to 85% depending on original asset resolution.
Are my documents secure during compression?
Yes, files never leave your device because compression runs locally in your browser.
🔒 100% Client-Side Privacy Guarantee
OM PDF processes all documents entirely in your web browser memory using WebAssembly. Your files are never uploaded to any cloud server, preventing data leakage and guaranteeing total security for confidential documents.