Reduce your PDF file size in seconds. Pick a compression level, drop your file, and download. Nothing is uploaded to a server — everything runs in your browser.
Drop your PDF here
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Choose fileThe compressed file was created entirely in your browser. Nothing was uploaded or stored.
How this compressor works
This tool uses your browser’s built-in rendering engine to compress your PDF. When you click Compress, it loads each page, re-renders it at the target resolution, and re-encodes it as a compressed image — then reassembles all the pages into a new, smaller PDF file. The whole process runs locally in your browser tab: your file never leaves your device.
This approach works best on PDFs that contain scanned documents, photos, or image-heavy layouts. Text-only PDFs typically see less size reduction because their original content is already stored efficiently as vector data.
Which compression level should I choose?
| Level | Best for | Quality |
|---|---|---|
| Light | Printing, archiving, sharing with colleagues | Near-original, minimal visible difference |
| Medium | Email attachments, cloud storage, general sharing | Good quality, some fine detail may soften |
| High | Web upload limits, WhatsApp/messaging, fast previews | Noticeably smaller, suitable for screen reading |
Start with Light or Medium — if the result is still too large, re-upload and try High.
Common questions
Is my PDF uploaded anywhere?
No. This tool runs entirely in your browser using JavaScript. Your PDF is processed locally on your device and is never sent to any server.
What is the maximum file size I can compress?
There’s no hard limit set by this tool, but very large PDFs (above 50 MB) may be slow to process depending on your device’s memory and CPU speed. For files above 100 MB, splitting the PDF first may give faster results.
Why didn’t my PDF get smaller?
Text-only PDFs and PDFs that already use efficient compression internally may not shrink much with this method. Try the High level for the maximum possible reduction. PDFs that were already heavily compressed (such as those produced by other compressors) will see the least improvement.
Will the text in my PDF still be selectable after compression?
Because this tool re-renders pages as images, the text in the output PDF will not be selectable or searchable — it becomes part of the image. If you need to keep selectable text, use the Light level and note that some quality is preserved, but selectability is not retained by this method.
Can I compress a password-protected PDF?
Not with this tool. Password-protected PDFs cannot be rendered by the browser without the password being unlocked first. Remove the password protection before uploading.
This tool is provided as-is for personal and professional use. Free Quick Tools does not store, process, or transmit your PDF files — compression runs locally in your browser only.