ToolMars collection
Free SEO Tools – Meta, Schema, Robots & Slugs
On-page SEO helpers you can use while you ship. Preview snippets, generate schema, write robots.txt, and compile 301 maps — all offline in the tab.
- SERP Preview ToolPreview how your title and meta description appear in Google search. Measure pixel widths, export Next.js metadata, and copy code instantly—free.
- Schema GeneratorCreate valid JSON-LD structured data for articles, products, FAQs, and apps. Free, instant schema generator with live validation. Copy ready for Next.js pages.
- Robots.txt GeneratorBuild a valid robots.txt file visually, test Allow and Disallow rules, and block AI scrapers. Free, instant generator with syntax validation. No signup needed.
- Slug GeneratorTurn any title into a clean, SEO-friendly URL slug instantly. Free online slug generator — lowercase, hyphenated, ready for blogs and CMS.
- Redirect CompilerPaste old and new URLs to generate 301 redirect configs for Nginx, Apache, or Next.js. Detects redirect loops instantly—free, browser-based, no signup.
- Image SEO SanitizerRename images into SEO-friendly filenames, generate alt text, strip EXIF metadata, and export HTML. Free, instant tool — all processing happens in your browser.
- Word & Text CounterCount words, characters, sentences, and paragraphs as you type. Get reading time, change text case, and clean whitespace. Free, instant — no account required.
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