Remove Claude’s formatting from Medium
Medium discards pasted HTML, so Claude's class names do not survive into a Medium story. What does survive is character-level: zero-width characters, exotic spaces, smart quotes and em dashes. Paste normally, then check for invisible characters and smart punctuation.
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 Medium keeps
- Medium strips most pasted markup into its own format, so class names generally do not survive.
- Character-level artifacts do survive, and Medium's own typography converts quotes and dashes anyway.
The fastest fix
Paste normally, then check for invisible characters and smart punctuation.
There is no markup to remove here, so the characters are the whole problem. Zero-width characters, non-breaking and exotic spaces and smart punctuation are text rather than formatting, which is why they survive a route that strips everything else.
How to check it worked
View Source on the published story. Medium rewrites markup heavily, so what you see published is the only thing worth checking.







