NewAnthropic is watermarking Claude’s text output from 2 August 2026.See which models carry it →

Remove Claude’s formatting from Blackboard

Blackboard preserves pasted HTML, so copying straight from Claude carries its class names — the ones containing “claude” — into a Blackboard assignment submission. They are invisible while you read, but present in the source and readable by anyone who looks. Open the HTML view in the content editor and remove the class attributes, or attach a file instead of pasting.

Check yours first. Paste the text into the free checker and it lists every artifact with its exact position — no account, nothing uploaded, unlimited.

Check my text →

What Blackboard keeps

The fastest fix

Open the HTML view in the content editor and remove the class attributes, or attach a file instead of pasting.

That handles the markup. It does not handle zero-width characters, non-breaking and exotic spaces, smart quotes or em dashes — those are text rather than formatting, so they survive the paste route above and every other one.

How to check it worked

Open the HTML view in the content editor before submitting. Instructors can view submission source, and submissions are usually final.

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