Free SEO & Blogging Tools

Convert Markdown to clean, semantic HTML instantly. Supports tables, code blocks, and GFM.

Paste from Word or Google Docs and get clean HTML without messy formatting artifacts.

Convert HTML back to Markdown for easy editing in any Markdown-based editor.

Generate structured data markup for articles, FAQs, products, and more. No coding required.

Validate your JSON-LD structured data against Schema.org specs and catch errors before publishing.

Visualize JSON-LD structured data in a readable tree view to verify your schema markup.

Check your robots.txt for syntax errors, blocked resources, and crawl directives.

Validate your XML sitemap for errors, broken URLs, and compliance with search engine specs.

Preview how your pages look when shared on Twitter, Facebook, LinkedIn, and Slack.

Run a real Lighthouse test on your blog: performance score, Core Web Vitals, and the issues slowing you down.

Calculate the true monthly cost of WordPress including hosting, plugins, CDN, and maintenance time.

Generate an llms.txt file from any sitemap so ChatGPT, Claude, and Perplexity can find and cite your content.

Compress images up to 80% without visible quality loss. Supports JPEG, PNG, and WebP.

Analyze any page for SEO issues: meta tags, headings, content structure, and performance.

Create professional blog featured images with customizable templates, fonts, and gradients.

Turn screenshots into beautiful, shareable images with backgrounds, shadows, and branding.