Remove Claude’s formatting from WordPress
WordPress preserves pasted HTML, so copying straight from Claude carries its class names — the ones containing “claude” — into a WordPress post. They are invisible while you read, but present in the source and readable by anyone who looks. Switch the block to Edit as HTML, or use the Code editor view, and remove the class attributes.
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 WordPress keeps
- The block editor keeps pasted classes on paragraph blocks, where they are invisible in the visual view but present in the saved post.
- Anything in your published HTML is readable by every visitor and every crawler, which makes this the highest-exposure platform on this list.
The fastest fix
Switch the block to Edit as HTML, or use the Code editor view, and remove the class attributes.
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 Code editor (Ctrl+Shift+Alt+M) to read the stored post markup, or use View Source on the published URL — the published page is what crawlers and readers actually get.
