Compress a PDF locally in your browser. Choose a quality preset, preview the expected reduction, and download a smaller PDF without uploading the document to Ninjitzu.
Drop in the PDF that needs to lose weight. Ninjitzu rebuilds each page locally and gives you a smaller copy.
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.
A PDF can become large because of high-resolution scans, photos, screenshots, embedded graphics, or export settings that preserve more data than the receiving portal needs. Ninjitzu compresses the document in your browser and creates a new, smaller PDF while leaving the original untouched.
Choose Balanced for most forms and applications, Strong when a portal has a strict upload cap, or Gentle when visual clarity matters more than maximum reduction. Because the rebuilt file is created locally, your document is not sent to Ninjitzu for processing.
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.
No. The document is read and rebuilt in your browser. Ninjitzu does not need a server copy of the PDF to run this tool.
No. The tool creates a new downloadable file. Your original stays on your device.
This browser-based compressor rebuilds pages as optimized images. That can reduce size significantly, but selectable text and some interactive PDF features may not be preserved.
Balanced is the best starting point. Use Strong when the upload limit is tight and Gentle when you want to preserve more visual detail.