Compress PDF Without Uploading to Any Server
Reduce the size of your PDF files directly in your browser. CompressWizard processes everything locally with WebAssembly — no byte of your document ever leaves your device. No sign-up, no size limit, 100% free.
100% Private
Your PDF never leaves your device. All processing happens in your browser with WebAssembly.
No size limit
No limit imposed. The only limit is the RAM of your device.
Smart compression
Compresses images inside the PDF while keeping text and vectors intact.
Preguntas Frecuentes
Does CompressWizard upload my files to any server?▼
No. CompressWizard processes everything in your browser using WebAssembly. No byte of your document ever leaves your device.
How much can I reduce a PDF size?▼
PDFs with JPEG images can be reduced by 40% to 80%. Text-only PDFs have less margin (5-15%).
Does it work offline?▼
Yes. Once the page and WASM module are loaded, you can disconnect. All processing happens locally.
Is there a file size limit?▼
No limit imposed by us. The only limit is the RAM of your device.
Does compression reduce text quality?▼
No. Only embedded images are compressed. Text, vectors, and metadata remain intact.
Is it really free?▼
Yes. The basic PDF compression is completely free with no limits. Pro plans unlock additional features like merging and splitting.
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