Documentation
Complete guide to Invisible Characters tools developed by Kimathi Sedegah
About Invisible Characters
Invisible Characters is an open-source suite of developer tools created by Kimathi Sedegah to help developers write more secure and maintainable code. The platform provides powerful utilities for code analysis, text inspection, and security threat detection—all completely free.
Whether you're building applications, analyzing code, or hunting for vulnerabilities, Invisible Characters provides the tools you need to work with confidence.
Unicode Scanner
Detect and analyze hidden Unicode characters
What it does
Unicode Scanner analyzes text and code to identify suspicious, hidden, or potentially dangerous Unicode characters. It detects:
- Zero-width characters (invisible but present in code)
- Control characters that could hide malicious code
- Formatting marks that might cause issues
- Obfuscated characters used in security attacks
How to use
- Visit the Unicode Scanner
- Paste or type your text into the input field
- The scanner automatically analyzes your text
- Review detected suspicious characters with their Unicode values
- Use the "Cleaned Text" output to remove invisible characters
- Export results as CSV for further analysis
Use Case Example
Protect your codebase from invisible character attacks where malicious actors hide code using zero-width characters. Security auditors use Unicode Scanner to identify potential injection vectors.
Code Comparator
Compare and analyze code across 50+ languages
What it does
Code Comparator is an intelligent tool that helps you:
- Compare code snippets side-by-side with detailed diff analysis
- Auto-detect languages from 50+ supported programming languages
- Generate diffs for version control and code review
- Export results for documentation and collaboration
Supported Languages
Code Comparator supports comparison across multiple programming languages including:
And many more! Language detection is automatic.
How to use
- Visit the Code Comparator
- Paste your original code in the left panel
- Paste the modified code in the right panel
- Languages are automatically detected with confidence scores
- Click "Compare" to generate the diff
- Review additions, removals, and changes
- Download or copy the diff for your records
Use Case Example
Code reviewers use Code Comparator to quickly understand changes between versions, identify refactoring improvements, and ensure code quality standards are maintained across different programming languages.
Key Features
Copy & Export
Copy results or export as CSV/TXT
Download
Save analysis results locally
100% Free
No sign-up, no hidden costs
Open Source
Community-driven development
About the Developer
Kimathi Sedegah is a full-stack developer passionate about building tools that make developers' lives easier. With a focus on security, performance, and user experience, Kimathi created Invisible Characters to address real pain points in code analysis and security threat detection.
When not coding, you can find Kimathi exploring new technologies, contributing to open-source projects, or working on the next iteration of developer tools.
Frequently Asked Questions
Is Invisible Characters really free?
Yes! Both Unicode Scanner and Code Comparator are completely free and open-source. No sign-up, no credit card, no hidden costs.
Do you store my data?
No. All analysis happens locally in your browser. We don't store, log, or transmit any of the text or code you analyze.
Can I use these tools offline?
The tools are web-based and require an internet connection, but your data processing happens on your device for privacy.
How accurate is the Unicode detection?
Unicode Scanner detects 63+ types of invisible and suspicious characters with 99% accuracy. It includes zero-width characters, control characters, and formatting marks.
What languages does Code Comparator support?
Code Comparator supports 50+ programming languages with automatic detection. See the documentation above for the full list.
Ready to get started?
Try Invisible Characters tools right now. No sign-up required.