Email attachment limits
Most mail servers reject attachments above 20MB. Rebuilding a bloated export usually clears the limit without touching page content.
PDF Compressor
Rebuild a PDF with tighter object streams and drop unused data.
Drop a file here, or choose from your device
Processing happens inside this tab — nothing is uploaded.
Options
What is PDF Compressor?
PDF Compressor loads a document with an in-browser PDF engine, discards unreferenced objects and metadata, and re-saves the file using compressed cross-reference streams. It is used to bring an oversized export from a design or scanning app down to something you can attach to an email.
How to use it
- 1Choose the PDF you want to shrink, or drop it onto the panel.
- 2Decide whether to strip document metadata.
- 3Wait for the rebuild — large files take a few seconds.
- 4Check the saving reported, then download the smaller PDF.
Features
- Runs entirely on-device with a WebAssembly-free PDF engine
- Removes unreferenced objects left behind by editors
- Optional metadata stripping for privacy
- Reports the exact before and after byte counts
When people use it
Confidential documents
Contracts and HR paperwork cannot legally be sent to a third-party compression service. Local processing removes that problem.
Known limits
- Structural compression cannot re-encode embedded images. A scan-heavy PDF may only shrink slightly.
- Documents protected with an owner password cannot be rebuilt.
PDF Compressor questions
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Last reviewed 2026-08-14. Browse the full directory.