Click to upload or drag and drop

PDF files only

No files selected. Drag and drop PDFs or click "Select PDF Files".

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Your files are processed in your browser - they never leave your device

How to Use - Compress PDF Online Free

1

Select Your PDF

Use the file picker or drag-and-drop to add your PDF file. The tool accepts standard PDF documents.

2

Choose Your Target Size

Move the compression slider to indicate how small you want your file. Lower = better quality, Higher = smaller file.

3

Compress Online (Without Upload)

Click 'Compress PDF' - the tool works entirely in your browser. Your file never gets uploaded to any server.

4

Download for Free

Click 'Download PDF' to save your compressed file. No payment, no subscription, no hidden fees.

Frequently Asked Questions

How can I compress PDF online and reduce file size for free?

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Simply click 'Select PDF Files' or drag and drop your PDF, adjust the compression level slider, and click 'Compress PDF'. All processing happens in your browser at no cost.

What compression levels are available?

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Our slider gives you full control from low to high compression. Lower levels preserve quality with modest size reduction. Higher levels create much smaller files but may affect image clarity.

Can I compress multiple PDFs at once?

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Yes, you can upload multiple PDF files. They will be combined and compressed into a single output PDF in the order you specify (drag to reorder before compressing).

Do I need to install any software?

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No installation needed. This is a web-based tool that runs entirely in your browser. No downloads, plugins, or software installation required.

Will the reduced PDF still be readable on all devices?

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Yes, compressed PDFs remain compatible with all standard PDF readers including Adobe Acrobat, browser PDF viewers, and mobile PDF apps. The compression doesn't affect document accessibility.