Unicode Domain Warning

Shows a warning when visiting a domain with Unicode characters, and displays the non-Unicode "Punycode" version of the domain.

As of June 2026, Unicode Domain Warning has 5,000 users and a 4.96/5 rating from 157 reviews in the Privacy & Security category.

Usersno change0%
5.0K
5,000
Ratingup 0.2 percent+0.2%
4.96
157 reviews
Reviewsup 1.3 percent+1.3%
157
Version
1.2.1
Manifest V3

History

5 snapshots

Tracking since Apr 18, 2026.

6.1K5.5K4.9KApr 18, 2026Jun 2, 2026
View as table
DateUsersRatingReviewsVersion
Apr 18, 20265.0K4.951551.2.1
Apr 27, 20265.0K4.951551.2.1
May 7, 20265.0K4.951551.2.1
May 23, 20266.0K4.961561.2.1
Jun 2, 20266.0K4.961571.2.1
Now5.0K4.961571.2.1

Permissions & access

Permissions
storage
Host access
None declared

Screenshots

Unicode Domain Warning screenshot 1Unicode Domain Warning screenshot 2Unicode Domain Warning screenshot 3

About

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.

Technical

Version
1.2.1
Manifest
V3
Size
56.4KiB
Min Chrome
88
Languages
1
Featured
No

Metadata

ID
khijgpndoffkmanglickjbnkbjimcdhn
Developer ID
u5d55d057094516ebd271746248b7c490
Developer Email
[email protected]
Created
Nov 26, 2025
Last Updated (Store)
Dec 21, 2025
Last Scraped
Jun 2, 2026
Website
thiojoe.com
Privacy Policy

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Data sourced from the Chrome Web Store · last verified Jun 2, 2026.