Save Ink. Save Time.
InkUndo is an AI-powered tool that removes handwriting from worksheets while keeping the printed text intact. Snap a photo of any used worksheet, and get a clean PDF back in seconds — ready to print and reuse.
First 3 sheets are on us! ✨
How InkUndo Works
InkUndo removes handwriting from any printed worksheet in 3 simple steps. No app download needed — it works directly in your browser on any device.
1. Snap a Pic
Take a photo of the completed worksheet with your phone or upload an image. InkUndo accepts JPG, PNG, WebP, HEIC, and PDF files up to 20 MB.
2. AI Removes Handwriting
InkUndo's AI analyzes the image and removes all handwriting — both pen and pencil — while preserving printed text, lines, graphics, and page layout.
3. Download & Reprint
Download a clean PDF with background noise removed, saving printer ink. The worksheet is ready to print and reuse as many times as you need.
Why Parents Love InkUndo
InkUndo saves parents time and money by turning used worksheets back into blank ones. No more buying the same workbook twice or erasing pages by hand.
Fast and Practical
Upload a photo and get a clean worksheet back in seconds. No manual erasing, no dry-erase sleeves, no plastic covers. Works with math worksheets, phonics sheets, Kumon workbooks, Singapore Math, and any printed educational material.
Saves Money and Printer Ink
Reuse the same workbook for multiple children or repeat difficult exercises until mastery. InkUndo also removes background noise from scans, reducing printer ink usage. Credits start at €0.20 per sheet with 3 free sheets to try.
Common Questions
Is InkUndo free to use?
InkUndo gives every new user 3 free credits to try the service — no credit card required. Each credit cleans one worksheet page. After that, credit packs start at €5 for 20 sheets (€0.25 each). Credits never expire.
What types of worksheets does InkUndo work with?
InkUndo works with any printed document that has handwriting on it. This includes math worksheets, phonics sheets, science worksheets, Kumon workbooks, Singapore Math pages, test papers, flashcards, university notes, and work documents. It removes both pen and pencil marks.
Do I need to download an app to use InkUndo?
InkUndo is a web application that works directly in any modern browser — no app download or installation needed. It works on phones, tablets, and computers. Just go to inkundo.app and start cleaning worksheets.
How does InkUndo handle my uploaded images?
Your worksheets are never shared with other users or third parties, sold, or published anywhere. We may use uploaded images internally to test and improve our handwriting-removal algorithm — strictly first-party, to make InkUndo better for everyone. Files are automatically deleted after 30 days.
What if the cleaning result is not good enough?
If InkUndo's AI cannot successfully clean a worksheet, no credit is charged. If you are unsatisfied with a result, contact our support team and we will refund the credit.
What file formats does InkUndo accept?
InkUndo accepts JPG, PNG, WebP, and HEIC images, as well as PDF files. The maximum file size is 20 MB. PDFs can have up to 10 pages, with each page using one credit. The output is a clean, print-ready PDF.