How to compress a PDF
Reduce a PDF's file size so it fits email attachments and upload limits.
Open Compress PDFWhen to compress
Compress when a PDF is too large to email or upload. A 30 MB file won't fit most email limits; compression can bring it under 5 MB.
Step 1: Upload your PDF
Open the Compress PDF tool and drop in your file. The tool shows the original size and an estimated output size.
Step 2: Choose a level
Balanced keeps documents readable while cutting size significantly. Use High or Email quality for the smallest files.
Step 3: Compress and download
Click Compress. Processing happens locally. You'll see the actual output size before downloading.
Quality trade-off
Higher compression lowers image quality. Text stays crisp; photos may soften. Pick the level that keeps your document legible.