Make a PDF smaller locally in your browser. Pick how aggressively Ninjitzu should reduce the file, compare before and after, and download the new PDF privately.
Start with the file size you have. Pick how much you want to reduce it, then let Ninjitzu rebuild a leaner copy on this device.
Rebuilding pages locally. Keep this tab open.
Add the PDF and I’ll keep the next step obvious.
Browser compression rebuilds PDF pages as optimized images. This is useful for upload-size problems, but selectable text, links, forms, signatures, and other advanced PDF features may not be preserved.
“Reduce PDF size” and “compress PDF” describe the same practical goal from two different angles: getting a document under an upload limit or making it faster to send. This page is built around the size problem first. You choose a reduction level and Ninjitzu shows the original size, the new size, and the percentage saved.
If a portal gives you a precise limit such as 1 MB, use the dedicated target tool instead. If it simply says the file is too large, begin here with Balanced reduction and only move to Strong if the result is still above the portal limit.
Ninjitzu's file tools are designed around local processing. The document is handled in the browser, the original file stays untouched, and the result is created as a separate download on your device.
Use the tool that matches the problem the portal actually gave you.
She is the calm voice inside Ninjitzu. DOTi keeps the next useful step obvious, explains what changed and helps you choose the right repair path without pretending to know rules a portal never showed you.
Short answers for the questions people usually have before uploading again.
Start with Balanced reduction. It lowers image resolution enough to remove substantial weight while usually keeping normal forms and scans readable.
Run Strong reduction, remove unnecessary pages, or use a dedicated target-size tool such as Compress PDF to 1MB.
Yes. After processing, Ninjitzu shows the original size, the new size, and the percentage reduction.
The processing happens locally in the browser. The new result is created on your device and the original is not replaced.