Compress PDF
Reduce a PDF to a fraction of its size by re-encoding pages at the quality you choose. Best on scanned and image-heavy documents — a 20 MB scan often lands under 3 MB.
Drop PDF here
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Private: files never leave your device
Pages are re-encoded as images for maximum savings — ideal for scans. Text stays readable but is no longer selectable.
Frequently asked questions
Are my PDF files uploaded to a server?
No — this tool runs entirely in your browser using WebAssembly and JavaScript. Your files never leave your device, which also means there are no size limits and no queues.
Will text stay selectable after compression?
No — this compressor re-renders pages as images, which is what makes big savings possible in the browser. Text remains perfectly readable but is no longer selectable. For text-heavy PDFs that must stay selectable, try lowering the export quality in the app that created the PDF.
How much smaller will my PDF get?
Scanned documents typically shrink 70–90% at default settings. PDFs that are already highly optimised may not shrink — the tool tells you instead of silently inflating the file.