Unicode Domain Warning icon

Unicode Domain Warning

Established publisherManifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

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
05,00010KNov 2025May 2026Oct 2026
Latest, 15 Oct 2026: 5,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 11 months
080160Nov 2025May 2026Oct 2026
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

WindowUsersChangeRatingsRating
7 days0+0.0%0+0.04
30 days0+0.0%0+0.04
6 months0+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
Search phrasePosition30 days
domain#170

Version history

3 versions recorded
1.2.121 Dec 2025
1.210 Dec 2025
1.127 Nov 2025

Details

Category
Privacy & Security
First seen
26 Nov 2025
Size
56 KB
Languages
en
Pricing
Free
Support
github.com
Extension ID
khijgpndoffkmanglickjbnkbjimcdhn

Permissions and risk

Low riskimpact 2, likelihood 1
Permissions
storage

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