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Reduce your PDF file size online for free — choose Low, Medium, or High compression based on your needs. No software or sign-up required.
Shrink your PDF file size with flexible compression levels. Choose Low for maximum size reduction, Medium for a balance between size and quality, or High for minimal compression and closer-to-original quality. Perfect for email attachments, uploads, and storage, our compression strips unnecessary metadata and optimizes embedded images. Everything happens right in your browser, with no software to install and no account required. It's completely free, with no hidden fees or watermarks — built for anyone who needs a smaller PDF.
Reduce your PDF file size in 4 simple steps
Click "Select File" or drag & drop your PDF onto the upload area to get started.
Choose Low, Medium, or High quality compression based on your needs.
Hit "Compress PDF" — compression runs entirely in your browser, no upload needed.
Your compressed PDF is ready! Download it instantly — smaller size, same great quality.
Smaller files, faster uploads, easier sharing
A large PDF can bounce off an email attachment limit, take forever to upload to a job portal, or eat up storage space you didn't plan to spend. Compressing a PDF reduces its file size by optimizing embedded images and stripping unnecessary metadata, so the document stays readable while taking up far less space.
To compress a PDF, upload your file, choose a compression level — Low for maximum size reduction, Medium for a balance, or High for minimal compression with the best quality — and click Compress PDF. The file is processed directly in your browser, and the smaller PDF downloads automatically.
Smart compression, maximum quality retention
Our smart compression reduces PDF size significantly while keeping text and images sharp.
Choose the compression level that best fits your needs, from maximum size reduction to minimal compression.
Your PDF is processed directly in your browser, so the file does not need to be uploaded to our server.
Compress your PDF directly in your browser without waiting for a server upload or processing queue.
Works perfectly on Android & iPhone. Compress heavy PDFs on the go — no app required.
No hidden fees or watermarks. Free PDF compression for everyone.
All standard PDF types are fully supported for compression
PDFs with many embedded images compress the most — image-heavy files can shrink significantly without noticeable quality loss.
If your PDF is already compressed or text-only, size reduction will be smaller — but metadata stripping still reduces the file meaningfully.
For email attachments, aim for under 5MB — compress once and check the output size before sending to ensure it meets attachment limits.
If your PDF is password protected, results may vary — for the most reliable compression, use an unlocked PDF.
Yes! Mishu PDF's Compress PDF tool is 100% free — no hidden charges, no subscription, no watermarks. Upload your PDF and download the compressed version instantly.
Results vary by content type. Image-heavy PDFs compress the most. Text-only PDFs see moderate reduction through metadata and structure optimization.
Absolutely. Your PDF is processed entirely in your browser — files are never uploaded to any server. Your data stays 100% private on your own device.
Yes! Mishu PDF is fully responsive and works on Android and iPhone. Compress large PDF files directly from your phone browser — no app download required.
Text stays sharp and readable at every compression level. Choosing High quality keeps images closest to the original; Low quality applies the strongest compression for the smallest file.
The tool attempts to open password-protected PDFs, but results aren't guaranteed for every file. For the most reliable compression, use an unlocked PDF.
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