Understanding the Problem
The Problem
When using AI tools like ChatGPT, Claude, or other LLMs, invisible characters often sneak into the generated content:
- Zero-width spaces that break formatting
- Non-breaking spaces in unexpected places
- Unicode control characters that cause issues
- Hidden characters that make text unpasteable
- Invisible formatting that corrupts documents
The Solution
Bad Character Scanner™ (BCS) at badcharacterscanner.com helps you:
- Detect and remove invisible characters instantly
- Clean AI-generated text before using it
- Fix copy-paste formatting issues
- Ensure clean document formatting
- Validate content before publishing
- Batch process multiple documents
Real LLM Examples
Example 1: ChatGPT Code Output
Here's what commonly happens when copying code from ChatGPT or other LLMs:
function processData(input)[U+200B] {[U+FEFF]
return input[U+200C].trim();
}
function processData(input) {
return input.trim();
}
The LLM output contains Zero Width Space (U+200B), Byte Order Mark (U+FEFF), and Zero Width Non-Joiner (U+200C) that can break your code execution!
Reference: Wikipedia: Zero-width Space
Always scan AI-generated code before using it in production!
Example 2: Claude Article Content
LLMs often insert invisible formatting characters in articles and documentation:
"The quick brown fox[U+2060] jumps over[U+00A0] the lazy dog."
"The quick brown fox jumps over the lazy dog."
The invisible Zero Width Space (U+200B) character can break parsing and create security vulnerabilities.
Reference: Wikipedia: Zero-width Space
You’re doing awesome! Catching invisible characters helps your team avoid tricky bugs and keeps your code clean.
Example 3: Email & Social Media Content
Social media posts and emails generated by AI often contain problematic characters:
Check out our new product![U+202C]
🚀 Amazing features[U+200E]
👉 Learn more: example.com[U+061C]
Check out our new product!
🚀 Amazing features
👉 Learn more: example.com
Contains Pop Directional Formatting (U+202C), Left-to-Right Mark (U+200E), and Arabic Letter Mark (U+061C) that can break social media formatting.
Reference: Wikipedia: Bidirectional Text
Ensure your social media content displays correctly across all platforms.
The LLM Problem
Invisible Characters
Common invisible Unicode characters found in LLM output
Affected Content
AI-generated content contains invisible characters
User Unaware
People don't know about invisible character issues
BCS Detection Rate
Bad Character Scanner™ catches all invisible characters
Learn more about zero-width characters: Wikipedia: Zero-width Space
Beyond LLMs: Other Sources of Invisible Characters
While LLMs are the biggest culprit, invisible characters come from many sources:
Understanding all vectors of invisible character contamination helps you protect your content, code, and communications from formatting issues and potential security vulnerabilities.
Web Copy-Paste Operations
Copying text from websites, PDFs, and online documents often introduces invisible characters:
- Non-breaking spaces from web formatting
- Zero-width characters from web fonts
- Hidden tracking characters
- PDF-to-text conversion artifacts
Compromised Email Communications
Malicious actors inject invisible characters into emails for:
- Bypassing spam filters
- Hiding malicious payloads
- Breaking email parsing
- Evading security scanners
Document Conversion & Import
Converting between document formats introduces invisible formatting:
- Word to HTML conversion errors
- Excel to CSV hidden characters
- PowerPoint to text artifacts
- Legacy encoding problems
Social Media & Messaging Platforms
Social platforms and messaging apps add invisible formatting:
- Unicode directional marks
- Platform-specific formatting codes
- Emoji zero-width joiners
- Auto-generated link previews
Third-Party APIs & Data Sources
External data sources often contain hidden formatting characters:
- CRM system data exports
- Database field contamination
- API response formatting
- JSON/XML parsing artifacts
Collaborative Editing & Version Control
Team collaboration tools can introduce invisible character conflicts:
- Google Docs revision artifacts
- Git merge conflict markers
- Slack/Teams formatting codes
- Multi-user editing collisions
Why Bad Character Scanner™ is Essential for All Sources
Whether invisible characters come from LLMs, web copy-paste, compromised emails, or any other source, they can:
⚠️ Cause Problems:
- Break application functionality
- Create security vulnerabilities
- Cause parsing and formatting errors
- Make text unsearchable
- Corrupt database entries
✓ BCS Protects You:
- Detects invisible characters from ANY source
- Cleans all text before you use it
- Prevents formatting disasters
- Maintains content integrity
- Ensures professional output
Who Needs Bad Character Scanner™?
Content Creators
Clean invisible characters from ChatGPT, Claude, and other AI-generated blog posts, articles, and marketing content before publishing.
Developers
Scan AI-generated code snippets to remove invisible characters that could break your applications or cause compilation errors.
Students & Researchers
Ensure academic papers, reports, and research documents from AI tools are properly formatted without hidden characters.
Social Media Managers
Clean AI-generated social media posts to prevent formatting issues on Facebook, Twitter, LinkedIn, and other platforms.
Perfect for professional posting!
Business Professionals
Clean emails, presentations, and documents generated by AI to maintain professional standards and avoid formatting errors.
Maintain professional image!
Authors & Publishers
Remove invisible characters from AI-assisted writing to ensure clean manuscripts, e-books, and published content.
Perfect for publishing workflows!
Marketers
Ensure AI-generated marketing copy, ad content, and email campaigns display correctly across all platforms and devices.
Optimize campaign performance!
Enterprises
Implement organization-wide invisible character detection for all AI-generated content to maintain quality standards.
AI Tool Users
Anyone using ChatGPT, Claude, Gemini, or other LLMs who wants clean, properly formatted output without hidden characters.
Essential for AI workflows!
How Bad Character Scanner™ Cleans AI Content
Instant Detection
Paste any AI-generated content and instantly see exactly which invisible characters are present. Our scanner highlights problematic areas and explains each character type.
One-Click Cleaning
Remove all invisible characters with a single click. Get clean, properly formatted text that you can safely copy, paste, and use anywhere.
Perfect for all LLM output!
Detailed Reports
See exactly what was removed from your content. Understand which LLMs generate which types of invisible characters for better workflow optimization.
Learn and improve your AI workflow!
Pricing to be announced!
Start Cleaning AI Content Today
Don't let invisible characters ruin your content formatting. Use Bad Character Scanner™ to clean AI-generated text and ensure professional, properly formatted output every time.