Compress PDF — Reduce File Size
Compress a PDF and reduce its file size to fit form upload limits — to 50 KB, 100 KB, 200 KB, 500 KB, or a custom target. Everything runs in your browser; your PDF is never uploaded.
Nothing leaves your browserNo sign-upNo watermark
Select a PDF to compress, or drop it here
Shrink marksheets, certificates & documents to fit upload limits.
Processed 100% locally
Compression runs entirely on your device. Your PDF is never uploaded to any server.
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Frequently asked questions
How do I compress a PDF to a target size (100, 200, 500 KB)?
Upload your PDF, pick a target like 100, 200 or 500 KB, and the tool rasterises and re-compresses the pages to land under it, then you download. Everything happens in your browser.
Will compressing reduce the PDF's quality?
Some quality is traded for the smaller size. We keep the highest quality that still fits your target, and smaller targets reduce sharpness more, so pick the largest size your form allows.
Is the PDF compressor free and private?
Yes — free, no watermark, no sign-up, and your PDF is processed entirely on your device. Nothing is uploaded.
Why does my form reject my PDF for size?
It's over the upload cap. Compress it under the stated limit (for example 200 KB) and re-upload.
Does it work on scanned PDFs?
Yes. Scanned, image-heavy PDFs usually compress the most, since the pages are images.
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All on-device — nothing you open here is uploaded.