Keep your content error-free and indexable with these lightweight utilities. Each tool is built for marketers, SEOs, and technical writers who need quick answers without complicated software.
Validate JSON data against JSON Schema specifications (Draft 4-2020-12). Perfect for LLM output validation and API testing.
Test webhook payloads and validate HMAC-SHA256 signatures. Debug integrations from Stripe, GitHub, Shopify, and custom APIs.
Generate llms.txt files for AI crawlers and language models
Create robots.txt files to control search engine crawling
Generate XML sitemaps for better search engine indexing
Create JSON-LD schema markup for rich snippets
Generate compelling meta descriptions for better CTR
Create optimized title tags for search engines
Generate descriptive alt text for images
Create favicons for your website
Plan and structure SEO-optimized content
Research and analyze keywords for your content strategy
Analyze title tags for length and optimization
Check meta description length and quality
Verify H1 tag presence and optimization
Analyze heading structure and hierarchy
Check canonical tags to prevent duplicate content
Comprehensive analysis of all meta tags
Verify image alt text for accessibility and SEO
Analyze keyword usage and density in content
Check content readability and Flesch reading ease
Count words, characters, and analyze content length
Comprehensive on-page SEO analysis
Validate robots.txt syntax and directives
Validate XML sitemap format and URLs
Check URL redirects and redirect chains
Verify SSL certificate validity and configuration
Check meta robots tags and X-Robots-Tag headers
Detect noindex tags that prevent indexing
Validate hreflang tags for international SEO
Verify favicon presence and format
Analyze breadcrumb navigation and schema
Detect duplicate content issues
Find pages with duplicate title tags
Test mobile responsiveness and usability
Measure Core Web Vitals (LCP, FID, CLS)
Analyze page load speed and performance
Check image sizes and optimization opportunities
Verify viewport meta tag configuration
Comprehensive mobile SEO analysis
Validate Open Graph meta tags for social sharing
Check Open Graph image dimensions and format
Validate Twitter Card meta tags
Validate structured data markup
Validate JSON-LD structured data
Analyze all structured data on a page
Optimize content for featured snippets
Check all links across your website
Find and fix broken links on your pages
Identify nofollow links on a page
Calculate link equity distribution
Comprehensive SEO audit of any webpage
Optimize content for target keywords
Extract keywords from content
Group related keywords for content planning
Track keyword rankings over time
Calculate conversion rates for websites, landing pages, and campaigns
Calculate click-through rates for ads, emails, and search results
Score headlines for engagement, emotional impact, and SEO
Calculate statistical significance for A/B tests with chi-square testing
Plan marketing spend across channels with ROI projections
Calculate email marketing ROI and campaign profitability
Create detailed buyer personas and customer avatars for your startup
Generate tailored marketing campaign strategies and tactics
Calculate ROI for AI automation projects with payback period analysis
Compare LLM API costs across OpenAI, Anthropic, Google, and Meta models
Quantify time saved by automating tasks with AI workflows
Validate JSON output from LLMs and APIs against schemas
Test and debug webhooks with payload formatting and validation