Reduce File Size
Aggressive compression for email-friendly files.
100% private Runs locally No sign-up
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Heavy libraries load on demand so the page shell stays fast.
About Reduce File Size
Reduce File Size applies aggressive PDF compression for stubborn email and portal limits. Stronger than everyday Compress PDF — expect more image softening in exchange for smaller attachments, all processed locally.
How to use Reduce File Size
- 1Drop the oversized PDF.
- 2Run aggressive reduce locally.
- 3Check the new file size.
- 4If still too large, split chapters with Split PDF or downscale scans first.
Frequently asked questions
When to use Compress vs Reduce?
Try Compress PDF first for balanced quality. Use Reduce File Size when a hard KB/MB cap remains.
Text clarity?
Vector text usually survives. Photo scans take the quality hit — that is where size savings come from.
Password-protected PDFs?
Unlock PDFs you own, reduce, then Password Protect again if needed.
Print quality?
Aggressive modes may look soft in print. Keep a high-quality master offline.
Upload required?
Never on Toolncy — reduction runs in the browser.
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