Processing happens locally in your browser whenever the tool supports it. No file upload or account is required.
Compress a PDF locallyEmail services and contact forms often reject large attachments. Compressing a PDF helps when a document includes large scans, screenshots, or images that make the file too heavy to send.
Good compression is a balance. The goal is not the smallest possible file at any cost, but a PDF that is small enough to share while still readable on screen and in print.
What usually makes PDFs large
Scanned pages and high-resolution photos are the main reason PDFs become huge. Text-only PDFs are usually already small and may not shrink much.
Best settings for email
Use moderate image quality for general sharing. If the PDF is for printing, keep a higher quality setting and test one page before compressing the full file.
Before you compress
Remove unused pages, crop large blank margins if possible, and avoid compressing the same PDF repeatedly. Repeated compression can make images softer.
Known limitations
Some PDFs are already optimized. Password-protected files must be unlocked first, and very large files depend on browser memory.
FAQ
Does this work without uploading files?
Yes. The site is designed around local browser-based processing whenever the tool supports it, so your files do not need to leave your device.
Do I need an account?
No. The tools and guides are available without sign-up or paid plans.
Should I keep an original copy?
Yes. Always keep an original copy of important files before compressing, splitting, or converting them.
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