SEO Tools
Validate meta tags, preview social share cards, and optimize your site for search engines — all free, all private, all in your browser.
OG Image Preview & Validator
Preview how your Open Graph meta tags look on Twitter, Facebook, LinkedIn, WhatsApp, Discord, and Slack. Validate image size and meta completeness.
Schema Markup Generator
Generate JSON-LD structured data for Google rich results. FAQ, Article, Product, LocalBusiness, Organization, BreadcrumbList, HowTo, Event schemas.
Robots.txt Generator
Generate robots.txt for your website. Control crawling, block AI bots, add sitemap URL. Presets for WordPress, e-commerce, and more.
A/B Test Sample Size Calculator
Calculate the minimum sample size for a statistically significant A/B test. Set significance, power, and minimum detectable effect.
What You Can Do with SEO Tools
Free online SEO tools — validate Open Graph tags, preview social share cards, audit meta tags, and optimize your site for search engines. This collection brings together tools such as OG Image Preview & Validator, Schema Markup Generator, and Robots.txt Generator, so visitors can move from browsing to solving a specific problem quickly. Instead of hunting through separate pages or spreadsheets, the hub gives you one place to compare options, open the right calculator, and get an answer with minimal setup.
Popular Tools in This Collection
Start with the most relevant page for your task, then use nearby tools for follow-up checks and comparisons. The pages in this section are designed to be focused, readable, and fast to use, which makes them practical for everyday planning, quick calculations, work decisions, and repeat tasks. That is especially useful when you want a direct answer rather than a long article or a complicated app flow.
Fast, Practical, and Browser-Based
Teamz Lab Tools is built around direct utility. Most pages work right in the browser, avoid unnecessary sign-up friction, and keep the experience lightweight enough to use on desktop or mobile. Bookmark this hub if you come back to these topics often, because it gives you a stable starting point for the most useful tools in this category.