Shows a warning when visiting a domain with Unicode characters, and displays the non-Unicode "Punycode" version of the domain.
Users
5,000
0 in 30 days
Rating
5.0 / 5
+0.04 in 30 days
Ratings
160
0 in 30 days
Store rank
#13K
#11K among extensions
Version
1.2.1
updated 21 Dec 2025
Users
monthly, 11 months
Latest, 15 Oct 2026:5,000 usersMove the mouse over the chart for any month
Ratings count
monthly, 11 months
Latest, 15 Oct 2026:160 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Unicode Domain Warning
Displays a warning page for domains with Unicode characters, to avoid potential "homograph" attacks or look-alike domains.
Features:
✓ Displays and highlights the unicode characters
✓ Displays the ASCII "Punycode" version of the domain name
✓ Whitelist a website so it never shows the warning again
✓ Option to ignore certain unicode characters you specify
✓ Works on TLDs and subdomains
How To Use:
• If a warning is displayed, you can click a button to whitelist the domain, dismiss it for the current session, or go back.
• To remove an existing whitelisted domain, right click the extension icon in the toolbar, then click "Options" / "Extension Options".
• You can also set specific unicode characters that should be ignored in the same options menu.
Privacy Notes:
• No tracking, analytics, or usage data collection of any kind.
• No External Requests: The extension runs entirely offline on your device; no data is ever sent to external servers.
• Only your whitelisted domains and characters are stored in your browser's synced settings.
Growth
Window
Users
Change
Ratings
Rating
7 days
0
+0.0%
0
+0.04
30 days
0
+0.0%
0
+0.04
6 months
0
+0.0%
+5
+0.05
Chrome Web Store search rankings
Where Unicode Domain Warning appears when people search the store, with the 30 day change