Compress PDF

Reduce PDF file size online without losing quality. Our free compressor optimizes documents for email attachments, web uploads, and faster sharing — choose balanced, strong, or high-quality compression.

Upload your file

Start by picking a document from your computer.

Select files for Compress PDF

or drop files here (Max 10MB)

Select files

or drop files here (Max 10MB)

Three compression levels

Batch processing

Maintains text quality

Fast processing

How to use Compress PDF

Upload your PDF file

Choose compression level

Download compressed file

Frequently Asked Questions

How much can I compress my PDF?

The final reduction depends on the file contents. PDFs with large images usually shrink the most, while mostly-text documents often keep a smaller but still useful size reduction.

Will compression affect text quality?

Text-heavy PDFs often retain readable text because most size reduction comes from images and document structure. Review small text, signatures, and charts before sharing the result.

Which compression level should I choose?

Use the recommended middle level for most documents. Higher compression is useful for email attachments and uploads, while lighter compression keeps more image detail.

Is it safe to upload my PDF?

Files move over HTTPS and go through short-retention processing. Temporary files are scheduled for cleanup after the workflow finishes.

When should I compress a PDF?

Compression is useful before sending files by email, uploading documents to forms or portals, or sharing PDFs on websites where smaller files load faster.

When to use this tool

Reduce an oversized PDF before emailing it or submitting it to a portal. Choose a compression level based on whether smaller size or image detail matters more for this copy.

An email or online form rejects a PDF because it is too large.
A scanned or image-heavy document takes too long to upload or share.
You need a smaller distribution copy while keeping the original file unchanged.

Tips for best results

Start with balanced compression, then inspect small text, signatures, charts, and stamps.
Run each new compression attempt from the original PDF instead of compressing an earlier output again.
Keep the source file until the recipient or submission portal accepts the smaller copy.

Privacy and file retention

Your PDF is transferred for the compression request and handled as a temporary working file. Uploaded and generated files are scheduled for deletion within the short retention window, normally 30 minutes, and a successful download may remove the output sooner.