05 / 09Document productivity tool

Classnote Sorter

A privacy-first PDF workspace that helps students combine, reorder, transform, and print class notes through one focused browser workflow.

Working product
Classnote Sorter workspace with sharp PDF previews and document controls
Year2026
Project typeBrowser-based PDF utility
Our roleProduct design, full-stack development, client-side PDF engineering
StatusWorking product
02

The problem

The challenge

Preparing class notes took too many separate tools.

Students often receive PDFs in the wrong order, with unwanted pages, dark backgrounds, or print-unfriendly layouts. Fixing one set of notes could mean several websites and unnecessary uploads of private documents.

03

What we changed

The key decision

Keep the whole print workflow in one place.

We designed a continuous workspace where every edit is visible and reversible. PDF processing happens in the browser, giving students immediate feedback while keeping source files on their own device.

04

The product

The experience

From mixed PDFs to a print-ready file.

Students can import several documents, reorder or remove pages, merge files, adjust print layouts, convert colours, add page numbers, and export the result without leaving the workspace.

What it enables

Useful outcomes for the people using it.

  1. 01

    Organise pages from several PDFs in one drag-and-drop workspace

  2. 02

    Create paper-saving print layouts with clear visual controls

  3. 03

    Improve dark or colour-heavy notes before printing

  4. 04

    Experiment safely with progress feedback and undo history

Under the hoodTechnical details
  • PDF.js and pdf-lib handle rendering and document changes locally in the browser.
  • Optional accounts provide a personal dashboard for saved output files.
  • MongoDB and ImageKit support authenticated file records and storage.
05

Results

Project evidence

What was delivered

delivered6+preparation tools delivered
deliveredLocalon-device processing
deliveredUndoreversible editing

Next project

VoltMind office energy dashboard with room and device monitoring

VoltMind