Attach worksheets to Google Classroom without the "file too large" headache — and without a slow open on your students’ Chromebooks.
Compress my PDFFree · No signup · Files never leave your device
Scanned worksheets and image-heavy handouts balloon to 20–50 MB, which are slow for students to download on school Chromebooks and phones — and clumsy to attach in Google Classroom. Compressing the PDF first makes it upload instantly and open in a tap, while keeping the text sharp and readable.
Click the button above to open the ClassPDF compress tool — nothing to install.
Select the PDF from your computer. It stays on your device; it is never uploaded to a server.
Download the compressed PDF and attach it to your Google Classroom assignment or material.
Google Classroom itself is generous, but large PDFs (over ~25 MB) are slow to attach and slow for students to open on Chromebooks. Compressing to a few megabytes fixes both.
No. ClassPDF keeps text crisp and only trims the wasted data in scans and images, so your handout stays clearly readable.
Yes. Compression happens entirely in your browser — the file never leaves your device, so there is nothing to upload, store, or leak. That matters when documents contain student names or grades.