Compress Scanned Homework & Assignments for Canvas, Blackboard & Moodle
Shrink multi-page scanned homework PDFs to fit university LMS upload limits. 100% private, free, and fast in your browser.
or drag and drop your document here
Professional Workflow Context
University and high school learning portals (Canvas, Blackboard, Moodle, Google Classroom) typically enforce upload caps between 5MB and 20MB. Scanned notebook pages photographed via mobile phones easily exceed 50MB, causing submission failures right before deadlines.
Bicubic Canvas Resampling @ 130 DPI
Mobile-Optimized WebAssembly Garbage-Collected Runtime
FERPA Student Privacy Compliant (No Data Storage)
Execution Steps
Drop Scanned PDF
Drag your phone scan or camera PDF into the compressor.
Choose 'Recommended' Setting
Applies optimal 130 DPI downsampling balancing handwriting legibility and small file size.
Download & Submit
Instantly submit the resulting file under your university's submission threshold.
Workflow FAQs
Will my professor be able to read handwritten math and notes?
Yes. Our algorithm targets high-frequency color backgrounds while retaining crisp line contrast for pencil and pen markings.
Does PDFMill work directly on Android and iPhone browsers?
Yes. PDFMill is fully mobile-responsive and runs efficiently on modern smartphone browsers without requiring any app install.