RED PENCIL EDITOR

The AI that marks but never fixes

Because learning happens when you do the work

Two Modes. One Mission.

Red Pencil Editor gives you feedback without doing your thinking for you. Choose Professor Mode for strategic guidance on argument and structure, or Editor Mode for pure grammar and spelling checks.

πŸŽ“ Professor Mode

Full engagement with your essay's argument, structure, and style.

  • Marks all errors (grammar, spelling, clarity)
  • Identifies weak claims and strong moments
  • Points to high-leverage locations
  • 3 strategic editor's notes maximum
  • Never rewrites your sentences

✏️ Editor Mode

Pure copyeditingβ€”grammar, spelling, mechanics only. Zero opinion.

  • Circles objective errors only
  • Assumes all style choices are intentional
  • No commentary on structure or argument
  • No praise, no suggestions
  • Just the errors, you figure them out

See It In Action

Here's a chapter from Professor Neuman's book Ten Bad Dads marked up with Professor Mode

View Example PDF

(Yes, professors use Red Pencil Editor too. Revision never stops.)

How It Works

1

Choose Your Mode

Pick Professor Mode for strategic feedback or Editor Mode for copyediting only

2

Copy The Prompt

Copy the entire prompt and paste it into ChatGPT, Claude, or any AI

3

Paste Your Essay

Add your essay text after the prompt and submit

4

Get Your PDF

Download your marked-up essay and revise based on the feedback

Why Red Pencil?

"Students are using AI anyway. Give them a version that teaches instead of cheats."
β€” The Philosophy Behind Red Pencil Editor