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Open this tool instantly from your toolbox.
Open toolReduce PDF file size instantly — choose your compression level, preview savings, 100% private.
Reduce file size • 4 compression levels • Instant download • No upload needed
PDF files only • All compression happens in your browser • No size limit
PDF compression happens directly in your browser. No waiting for server uploads.
Your PDF never leaves your device. We cannot see or access your files.
Compress PDFs of any size — small reports or large presentations.
4 preset levels plus custom quality slider and advanced options.
Compress PDF is a free online tool that reduces the file size of your PDF documents instantly in your browser. No file is ever uploaded to any server — all compression happens locally on your device, keeping your documents 100% private and secure. Choose from multiple compression levels to balance file size and quality.
How to use: Drop or select your PDF file, choose your compression level (Low, Medium, High or Custom), then click Compress PDF. Download your compressed PDF immediately — no waiting, no limits.
Upload your PDF and choose a compression level — higher compression gets you closer to very small targets like 100KB or 200KB, while a lighter setting is enough for a 500KB or 1MB-2MB target. The result size depends on how many images are already inside your PDF.
Text itself stays sharp since it's vector data, not a pixel image — compression mainly reduces the size of embedded images and removes redundant data, so text-heavy PDFs shrink with no visible quality loss.
Open this page in Safari or any mobile browser, tap to upload the PDF from your Files app or iCloud, pick a compression level, and download the smaller file — no app installation needed.
Since compression runs in your browser rather than on a server, the practical limit is your device's memory rather than a fixed cap — most everyday PDFs (reports, scanned forms, resumes) compress without issue.
No. Your file is processed locally in your browser and is never uploaded or saved on a server, so confidential documents stay private.