Students & teachers

Text hygiene for students & teachers

Clean invisible characters from your work before you submit — or reveal hidden text in the submissions you grade. Free, private, in-browser.

For students — clean before you submit

AI-assisted work and copy-paste from the web often carry invisible characters that break formatting in your LMS or grader. Clean them before submitting — honestly, format-only, no evasion.

Clean · files

File cleaner

Batch-clean TXT, MD, HTML, DOCX and more. →

Clean · text

Invisible character remover

Strip zero-width trackers from pasted text. →

Scan · text

Scanner

See every invisible character before you clean. →

For teachers — audit a submission

Invisible characters and white-text don't show on screen, but they occupy bytes. Reveal exactly what a submission really contains.

⭐ Audit

Submission auditor

Reveal hidden characters and text with exact positions. →

Our honest boundary

We clean invisible formatting characters — never rewrite content, and never help evade AI detection.
AI-detection is unreliable; this tool does not attempt it. For students, that means "format clean", not "undetectable".