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This tool has both a fake text detector and a generator. Here is how to use them:
Fake Text (Homoglyph) Detector - Lets you identify if text you have pasted into the window has homoglyph or zero space hidden within it. Helps you identify phishing emails, spoof domains or people attempting to bypass AI detectors. Homoglyphs do not bypass Originality.ai’s accurate AI detector.
Fake Text (Homoglyph) Generator - Let's you create homoglyph fake text in order to better understand how the process works and check if the tool your using (AI detector or similar) is resistant to homoglyph attacks.
Homoglyphs are Unicode characters from different alphabets or character sets that look visually identical or extremely similar, despite having entirely different underlying codes. For instance, the Latin letter "A" and the Cyrillic letter "А" appear identical but have unique Unicode representations. Similarly, the digit "0" (zero) and the capital letter "O" look almost indistinguishable in many fonts.
Using homoglyphs, you can create text that appears perfectly normal to human readers but contains hidden substitutions invisible at first glance. This "fake text" can evade automated detection systems, such as AI-based content filters, moderation tools, or security checks—highlighting both their clever use in security testing and the potential risks they pose if misused.
Example of Common Homoglyphs:
Why do we care about “homoglyphs”? What real-world harm can not being able to tell the difference between real text and fake text cause?
Homoglyphs can be used to disguise sensitive or prohibited words, making them harder for automated systems to detect.
Example: Online platforms like a chat room use a word filter that can be susceptible to a homoglyph attack.
By substituting characters with homoglyphs, AI-generated used to be able to evade detection systems designed to identify machine-written content. This is no longer possible with accurate AI detectors. Simple AI humanizers used to use this strategy, but now AI humanizers use more advanced methods, even if they are not built to bypass detectors.
Example: This study showed replacing just 10% of characters in AI-generated text with homoglyphs led to a significant drop in detection accuracy across lower-quality AI detectors. arXiv
Attackers exploit homoglyphs to create deceptive domain names and email addresses that mimic legitimate ones, tricking users into divulging sensitive information.
Example: A phishing campaign targeted Microsoft 365 users by sending emails from addresses like "Suррогt Меѕѕаցе сеոtеr," where characters were replaced with visually similar ones from other alphabets. The emails directed users to malicious sites, effectively bypassing standard email filters. Mesh | Email Security Redefined for MSPs
What it is: A sophisticated web-based tool that identifies and generates homoglyph characters - visually identical or similar Unicode characters from different scripts that can be used for testing, researching, and learning.
How it works: The tool operates in two modes:
Detector Mode: Analyzes input text to identify suspicious characters that look like Latin letters but are actually from other Unicode scripts (Cyrillic, Greek, Mathematical symbols, etc.)
Generator Mode: Creates test cases by substituting regular Latin characters with visually similar homoglyphs from various scripts
The tool supports 12 different writing systems and character sets:
Total mappings: Over 200 individual homoglyph characters
Homoglyphs are a powerful tool for testing system robustness, exploring the limits of AI detection, and understanding how text obfuscation works. Tools like the Fake Text Generator can be educational and valuable for developers, researchers, and educators but they must be used responsibly.
Like any technology, homoglyph substitution can be exploited. Bad actors might use fake text to:
These actions can undermine trust and security across the internet.
Originality.ai provides this tool to support transparency and digital literacy. Use it to understand, not to exploit.
We hope this Homoglyph detector and generator helps you understand the true authenticity of written work.
The ability to drive transparency into the written word is the mission we are on and we hope this free tool helps you.
Interrested in checking out more tools? Try the originality.ai AI Humanizer.
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