Free SEO tools
Browser-based SEO tools. No signup, no limits.
32 instant, client-side SEO utilities. Use them on any site — yours or not — with zero tracking. Every tool runs in your browser, and nothing you paste is ever uploaded.
Technical SEO
Robots.txt Tester
Instantly check whether a URL is allowed or blocked for any user-agent — pure client-side, no data leaves your browser.
JSON-LD Schema Validator
Validate JSON-LD structured data before you deploy — catches missing required fields Google uses to render rich results.
XML Sitemap Validator
Catch structural errors, invalid URLs, and missing metadata in your sitemap before Google does.
Hreflang Generator
Turn a list of URL and language pairs into valid, reciprocal hreflang tags — plus x-default and sitemap output.
Slug Generator
Convert a page title into a clean, search-friendly URL slug in one click.
Canonical Tag Checker
Check a page's rel=canonical tag for the mistakes that quietly waste crawl budget and split ranking signals.
Noindex Checker
Paste HTML, a meta robots tag or an X-Robots-Tag header to see exactly what it tells search engines to do.
Schema markup
FAQ Schema Generator
Convert your question-and-answer pairs into valid FAQPage JSON-LD you can paste straight into your page.
Local Business Schema Generator
Turn your business name, address, hours and contact details into valid LocalBusiness JSON-LD.
Product Schema Generator
Build valid Product JSON-LD with the price, availability and review data Google needs for a product rich result.
Article Schema Generator
Build valid Article, NewsArticle or BlogPosting JSON-LD with the headline, author and date fields Google requires.
Video Schema Generator
Turn a video's title, thumbnail and duration into valid VideoObject JSON-LD ready to paste into your page.
Review Schema Generator
Build valid Review or AggregateRating JSON-LD without breaking Google's rules on self-serving ratings.
Job Posting Schema Generator
Build JobPosting JSON-LD with every property Google Jobs requires, so listings are eligible to appear.
Breadcrumb Schema Generator
Convert a page's URL structure into valid BreadcrumbList JSON-LD for the search result trail.
Event Schema Generator
Turn your event details into valid Event JSON-LD that's eligible for Google's rich event listings.
Recipe Schema Generator
Turn ingredients and steps into valid Recipe JSON-LD eligible for Google's recipe carousel and rich results.
Podcast Schema Generator
Turn a podcast episode's details into valid PodcastEpisode JSON-LD that helps search and AI engines surface it correctly.
HowTo Schema Generator
Turn a set of instructions into valid HowTo JSON-LD structured as numbered, machine-readable steps.
Keyword research
Keyword Difficulty Checker
See how hard a keyword really is, based on the live top 10 and the authority you would actually have to outrank.
Keyword Cannibalization Checker
Find keywords where more than one page on your site is competing for the same ranking.
Topic Cluster Generator
Paste a keyword list and get it grouped into named clusters, each with a pillar page and its supporting pages.
Negative Keyword Tool
Paste your search-term report to find the queries burning budget, and export them as a ready-to-paste negative list.
Keyword Golden Ratio Checker
Score any long-tail keyword with the KGR formula and see instantly whether a single page can rank for it without link building.
SERP & rankings
SERP Simulator
Test your page title and meta description in a pixel-accurate Google preview before you publish.
SERP Checker
Pull Google's live top 10 for any keyword and see the authority you would actually have to outrank.
Google Rank Checker
Check where your domain ranks in Google's top 100 for any keyword — live, with the competitors ahead of you.
CTR Curve Calculator
The organic click-through rate curve by position, plus what moving up a few places is worth in clicks and equivalent ad spend.
AI search
Related free checks
Guides for the checks people run most
Ready for the full picture?
These tools are one check. LemRank tracks it daily.
Free tools answer a single question. If you are comparing rank trackers to run this continuously, start here.