Compress PDF
Upload a PDF file so the tool can optimize its structure and slightly reduce its size, then download the smaller version.
Drag & drop your PDF file here
or click to browse
Processed right in your browser — files are never uploaded to a server.
How to Compress PDF
- 1Select file. Upload the PDF file you want to shrink.
- 2Compress. The tool optimizes the structure and removes redundant data.
- 3Download. Click the button to download the compressed PDF file.
Light PDF compression, content stays the same
The tool optimizes the internal structure of the file (merging objects, removing redundant metadata) to reduce file size without changing content or text quality. The amount of reduction depends on the original file.
Things to know
This is light, browser-side compression, most effective on text-heavy PDFs. For PDFs with many high-resolution images, the reduction will be limited since the tool doesn't lower image quality. If your file barely shrinks, it's likely already well optimized.
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Frequently Asked Questions — Compress PDF
Because most of the size comes from high-resolution images — this tool mainly optimizes structure rather than lowering image quality, so image-heavy files shrink less.
No. Content and text stay unchanged; the tool only optimizes how data is stored internally.
No. Everything is processed right in your browser with JavaScript, so your file is never sent anywhere and stays fully private — even sensitive documents like contracts or ID papers.
It's completely free, no sign-up required, no usage limits, and no ad watermark added to your file.