Merge PDF
Combine multiple PDFs into one file, free and 100% in your browser.
PDF Compressor
Reduce PDF file size privately in your browser. Adjust quality, preview an estimated output size, and see exact savings after compression.
How to use
Private by default: processing stays on your device
YOUR PDF
Start with a PDF
Choose a PDF to compress. It never leaves your device.
Drop your PDF here or browse files PDF · PROCESSED ON YOUR DEVICE
Original size
Estimated output
Estimate only; the exact size and savings appear after compression.
File details
Selectable text, vectors, links, and page structure are preserved. Only supported embedded images are downsampled.
Smaller PDF, same content.
Lower quality means more compression.
More compressionHigher quality
Lower settings downsample supported embedded images more aggressively while preserving selectable text, vectors, links, and page structure.
1 KB is 1,024 bytes. Up to 4 compression attempts, strongest last; text, links and forms are preserved throughout.
PDF signatures may not remain valid after compression.
Good to know
Compression downsamples supported embedded images; text, vectors, links, and page layout stay intact. Everything runs on your device.
How to use this tool
- Choose a PDF from your device.
- Adjust compression quality and review the estimated size.
- Select Compress PDF, then download the result if it is smaller.
These buttons share the page link, not your input.
Want to include your text?
Your current input will be stored in the link after the # symbol, not uploaded to Handy Browser Tools. Anyone with this link can read that text. If you send or post it, the service you choose also receives the link. Do not include passwords or private information.
Frequently asked questions
Are my PDF files uploaded?
No. Your PDF is read and processed in your browser. It is never sent to a server or stored in the site.
Will every PDF become smaller?
No. Already optimized PDFs may stay the same size or become larger, so the download is offered only when the result is smaller.
Does the quality slider preserve my PDF structure?
Yes. Every setting preserves selectable text, vectors, links, forms, and page structure while supported embedded images are downsampled and recompressed. Unsupported image formats remain unchanged.
Can I compress an encrypted PDF?
Encrypted and malformed PDFs are rejected. Save an unencrypted copy and try again.
Can compressing invalidate a digital signature?
Yes. Modifying a digitally signed PDF can invalidate its signature. Compress a signed document only when a broken signature is acceptable, or keep the original for verification.
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