PDF Compress — Free Online Tool
Reduce PDF file size by removing metadata and compressing streams.
About PDF Compress
PDF Compress helps you reduce the file size of your PDF documents without sacrificing quality. Large PDFs can be a headache — they're slow to email, take up storage space, and may exceed upload limits on websites. Our compression tool optimizes PDF internal structures, removes unnecessary metadata, and compresses image streams to make your files significantly smaller. Choose from different compression levels to balance quality and file size. All processing happens in your browser — your documents stay private.
How to Use PDF Compress
Upload your PDF
Drag and drop or select the PDF file you want to compress.
Choose compression level
Select from light, medium, or maximum compression depending on your needs.
Compress
Click the Compress button and watch the file size shrink in real-time.
Download
Save the compressed PDF to your device.
Frequently Asked Questions
How much can PDF Compress reduce file size?
Compression results vary by content, but most PDFs see a 20-60% size reduction. PDFs with lots of images tend to compress more than text-only documents.
Will compression affect the quality of my PDF?
Minimal. PDF Compress primarily removes redundant data, embedded fonts, and metadata. Content quality is preserved.
Is PDF Compress safe for sensitive documents?
Yes. All compression happens locally in your browser — your PDF never leaves your device.
What's the maximum file size I can compress?
You can compress PDFs up to 50MB. For very large files, consider splitting them first with PDF Split.