Compress PDF — Smaller Files, Fast & Private
Shrink PDF file size by re-rendering pages as optimized images, entirely in your browser. No upload, no file-size limits.
Built for developers and creators.
PNG • JPG • WEBP • HEIC • SVG • PDF
Fast in-browser image conversion · No uploads. No tracking.
Popular conversions
Compress PDF (client-side)
Re-render pages into optimized JPEG to reduce size.
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Upload PDF
Large PDFs are slow to email and often rejected by upload forms with strict size limits. Pixmizer's PDF compressor processes every page locally in your browser, so your documents never touch a server, and gives you a smaller, easier-to-share file in seconds.
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Why Pixmizer?
🔒 Private processing in-browser
⚡ Instant conversion and export
⚡ Works entirely in your browser
🖼 Works with major image formats
💻 No software installation
FAQ
Do you upload my files?
No. All processing happens locally in your browser. Files are never uploaded to any server.
Which formats are supported?
Image compression supports JPG, PNG, and WEBP. HEIC conversion lets you turn HEIC photos into JPG or PNG. PDF compression works with standard PDF files rendered locally in your browser.
Is it free?
Yes. Pixmizer is free to use. Optional donations help keep the service online and independent.
Privacy
Files are processed locally in your browser. Temporary object URLs are revoked when you remove items or leave the page.