CopywaBanned-word checker
A free online tool: paste your copy to flag Advertising Law absolute terms, sensitive words and traffic words, with suggested fixes. Check before posting to Xiaohongshu or WeChat. No sign-in, nothing uploaded.
Type the body and flagged words are marked here.
Type some text to start checking.
Sign up to check with your own persona rules and let AI write compliant copy for you
How to use it
- 01
Paste the title and body
Paste the Xiaohongshu note, WeChat article or product page you are about to post. The title is optional.
- 02
Pick the word lists
Seven lists are on by default, such as Advertising Law absolute terms and Xiaohongshu traffic words. Signed in, you can add your persona's own rules.
- 03
Fix what it flags
Hits are highlighted in the body, each with the reason and a suggested rewrite. Fix them, then copy the text out.
FAQ
Is this banned-word checker free? Do I need an account?
It is free and needs no sign-up or sign-in. Signed in, you can also check against your persona's own rules.
How do I check ad copy for banned words online?
Paste the title and body into the boxes above; it checks as you type. Hits are highlighted in the text and listed below with the reason and a suggested replacement.
Which words does the Advertising Law check catch?
Seven built-in lists: Advertising Law absolute terms (such as "best", "No. 1", "national level"), Xiaohongshu traffic words (WeChat IDs, off-site links), efficacy claims, income and guaranteed-pass promises, superstition terms, Douyin live and short-video terms (such as "DM to claim" and "0-yuan deals") and Taobao listing terms (such as made-up original prices, rewards for reviews and knock-offs).
Is my text uploaded?
No. The check runs in your browser; what you paste is not sent to a server or saved.
If nothing is flagged, is my copy safe?
Not necessarily. The lists cover common high-risk terms, not every term, and there is no official complete list. Always follow the latest platform rules and regulations.
Which platforms is it for?
Xiaohongshu notes, WeChat articles, Weibo, Zhihu, Moments ads, video scripts and e-commerce product pages. It checks Chinese text only.
How should I fix flagged words?
Use the suggested rewrite for each hit, for example "best" becomes "very good". Or sign up for Copywa and let AI write compliant copy in your persona's voice.
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