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Compress PDF

Reduce PDF file size while maintaining quality.

Your files are secure. We never store your documents.

100% Secure

and private

Fast & Easy

Just a few clicks

High Quality

Original quality

PDF Studios Compress PDF reduces the size of your PDF files so they are easier to email, upload, and store. The tool optimizes images, fonts, and metadata to keep the document readable while making the file much smaller. You do not need to install anything or create an account, and your file is removed from our servers after processing.

Common Use Cases

Make a large PDF small enough to send as an email attachment when the original file exceeds the size limit
Reduce the size of scanned documents and image-heavy PDFs before uploading to forms or cloud drives
Shrink PDFs for faster sharing in messaging apps, social media, or team collaboration tools
Lower storage use for archives, backups, and document libraries without deleting old files
Prepare PDFs for websites or online portals that have strict maximum file size requirements

How to Compress PDF Files Online

1

Upload your PDF

Drag and drop your PDF into the upload area, or click to select it from your device. PDF Studios accepts PDFs of any size and works in all modern browsers.

2

Pick a compression level

Choose the right setting for your needs. Use a lighter setting to keep high image quality, or a stronger setting to get the smallest possible file.

3

Start the compression

Click the Compress button. The tool will reduce the file size while keeping the text and images readable. Processing usually takes only a few seconds.

4

Download the compressed PDF

Save the smaller PDF to your device. You can check the new file size and share the document right away.

Frequently Asked Questions

Is the Compress PDF tool free?

Yes. PDF Studios is completely free. There are no subscription fees, watermarks, or paid plans.

Is it safe and private to compress PDFs online?

Yes. Files are uploaded over an encrypted HTTPS connection and processed securely. They are automatically deleted from our servers within 24 hours.

Do I need to sign up or install anything?

No. Compress PDF works in your browser on any device. You can use it without registering or installing software.

What is the file size or compression limit?

There is no strict file size limit. You can compress large PDFs, though very large files may take a little longer to upload and process.

Related PDF Tools

All files are processed securely and deleted automatically within 24 hours. PDF Studios is free and requires no signup.