Compress PDF for email
Mail servers often cap attachments around a few megabytes. This flow starts at 1 MB so you can quickly aim under typical limits.
For any other KB/MB cap, use the main PDF target size tool.
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About this use case
If your provider still blocks the file, drop to 500 KB using the related size pages, or split the PDF into two parts.
Compression is local: your correspondence stays on your device during processing.
How to use
- Upload the PDF that bounced back from your mail client.
- Start from the 1 MB preset or pick a smaller KB target for stricter limits.
- Compress, then download the lighter PDF.
- Attach the new file and resend.
FAQ
- How do I compress PDF to 500KB?
- Open the 500 KB size page from Related PDF sizes for a one-click preset toward half a megabyte.
- Why can't some PDFs reach the target size?
- Email-friendly sizes are aggressive for scan-heavy PDFs. Try a higher limit, remove extra pages, or export fewer images per message.
- Is my PDF stored?
- No. We do not upload or retain your attachment.
- How does PDF compression work?
- The tool rebuilds the PDF from compressed page images so total bytes track your chosen cap instead of guessing with print settings.
- Will recipients see blurry pages?
- Smaller targets use stronger JPEG compression. For legal or archival email, keep a high-quality original separately.
Related PDF sizes
Related PDF scenarios
Related tools
- Compress PDF to Exact Size
Upload a PDF, pick a target file size (KB or MB), and download a smaller PDF tuned toward that goal. Runs in your browser with pdf.js and pdf-lib.
- Compress image to target size (KB)
Need photos under a byte limit instead? Use the image compressor with the same target-size workflow.