Drop heavy lecture notes or handwriting exports. We shrink them to your target size — instantly, in your browser. No uploads, no accounts, no forced ads or limits. Ever.
Drag & drop your PDF files here
or choose files · Multiple files supported
MoodleCrush runs entirely in your browser — we have zero server costs for your files. We believe students shouldn't have to pay to compress a PDF. That's a promise.
If you find MoodleCrush useful, you can support us for free. It costs you nothing and keeps the lights on. 🙏
A simple, smart pipeline that runs entirely in your browser.
Your PDF opens locally with pdf.js; the file never leaves your device.
MoodleCrush checks if your PDF is mainly text (Word/LaTeX) or scanned/GoodNotes style pages.
Text PDFs get a lossless re-save; scanned PDFs go through a few compression stages to approach your target size.
The final PDF is assembled with pdf-lib and saved straight to your Downloads folder.