Compress PDF Files
Reduce PDF file size in the browser with quality presets and before/after size visibility.
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Drop one PDF to compress
Choose a compression level, preview the estimated size change, and download a smaller PDF securely.
How it works
- Upload one PDF.
- Choose a low, medium, or strong compression preset.
- Compress and download the smaller file.
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FAQ
How does client-side compression work here?
The current browser implementation rebuilds each page as a lighter image-based PDF, which reduces size but can soften detail at stronger presets.
Is this tool private?
Yes. For this workflow, file processing happens securely and the document is not uploaded to ScrollPDF during the tool operation.
What file size limit applies?
ScrollPDF currently validates files up to 100 MB per file in the browser UI.
Why can the output look different from the source file?
PDF structure, fonts, compression, form fields, and embedded assets vary between files, so exported results can differ slightly depending on the operation and the original document.
Do I need to create an account to use this tool?
No. Core ScrollPDF tools remain available without an account. Accounts are for profile, auth, and future saved-file features.