requirements.txt

# Clipper 3.0 - Standards-Based Dependencies (API-Free)
# Command-Line Interface Progressive Performance Evaluation & Reporting

# Industry Standards Evaluation Stack
axe-selenium-python>=2.1.6    # WCAG 2.1 accessibility (Deque Systems standard)
selenium>=4.0.0                # W3C WebDriver standard for browser automation
extruct>=0.13.0                # Schema.org structured data extraction (W3C)
advertools>=0.13.0              # Professional SEO and content analysis framework
httpx>=0.24.0                  # Modern HTTP client (RFC compliance)
beautifulsoup4>=4.9.0          # HTML parsing standard
readability-lxml>=0.8.0        # Mozilla Readability content extraction

# Core Web Standards
lxml>=4.9.0                    # High-performance XML/HTML parser
html5lib>=1.1                  # HTML5 parser (W3C compliant)
jsonschema>=4.0.0              # JSON Schema validation
pyquery>=1.4.0                 # jQuery-style HTML manipulation

# HTTP & Content Standards
charset-normalizer>=3.0.0     # Character encoding detection
requests>=2.25.0               # HTTP library fallback

# Optional: Enhanced browser automation
chromedriver-autoinstaller>=0.6.0  # Auto Chrome driver management

# Development dependencies (install with pip install -e .[dev])
# pytest>=6.0.0
# black>=21.0.0  
# flake8>=3.8.0