A curated collection of nine free SEO tools to analyze, audit, and optimize any page — from on-page audits and title scoring to schema, robots.txt, and sitemaps. All free, all client-side, no signup.
This is the Zovo collection of free SEO tools — a single hub that brings together nine focused utilities for analyzing, auditing, and optimizing any web page. Instead of one bloated dashboard that tries to do everything, each tool does one job well: auditing a page, scoring a title, generating valid structured data, checking how readable your copy is, or producing a clean robots.txt and sitemap. Together they cover the full on-page SEO workflow, from first audit to final technical setup.
The collection is built for content marketers, bloggers, small-business owners, freelancers, and developers who want practical, no-nonsense SEO checks without learning an enterprise platform. Whether you are publishing your first blog post or auditing a client site before launch, these tools give you fast, transparent feedback you can act on immediately. Nothing is gated behind a paywall and there are no usage limits.
Every tool here shares three promises. First, they are completely free — no trial, no credit card, no premium tier hiding the useful parts. Second, they require no account and no signup; you open a tool and start using it. Third, they are 100% client-side: the HTML, titles, and text you enter are processed entirely in your browser and never uploaded to a server, so they are safe to use on unpublished drafts and confidential client pages, with no risk of leaking content you have not published yet. Pick a tool below to get started, or read the workflow section to see exactly how they fit together as a repeatable, page-by-page optimization routine.
Start here: get a full picture of a page's SEO health and score your most clickable elements.
Paste your HTML and get an instant on-page SEO audit with a scored 0-100 report, heading hierarchy analysis, and keyword density — plus a prioritized list of fixes.
Open tool →Preview, measure, and score your title tag the way Google sees it — a live SERP snippet, pixel-width truncation, and a transparent 0-100 score.
Open tool →Score your headlines 0-100 by analyzing word balance, sentiment, readability, power words, and emotional impact with real-time feedback.
Open tool →Generate the title, snippet, and structured data that shape how your page appears in search.
Generate SEO meta tags, Open Graph, and Twitter Card markup, with live previews of how the snippet looks on Google, Facebook, and Twitter.
Open tool →Build JSON-LD structured data for Articles, Products, LocalBusiness, FAQ, HowTo, Events, and more, using a visual form builder with live preview and validation.
Open tool →Tune the words on the page so they read well and avoid keyword over-optimization.
Calculate and analyze keyword frequency in your copy so you can confirm your target terms appear naturally and spot over-optimization.
Open tool →Analyze text with six readability formulas — Flesch Reading Ease, Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG, and ARI — with grade levels and suggestions.
Open tool →Control how search engines crawl and index your site with valid, ready-to-deploy files.
Create a robots.txt file with a visual builder: add user-agent rules, allow and disallow paths, sitemap URLs, crawl-delay settings, and block unwanted crawlers.
Open tool →Generate valid XML sitemaps for free: add URLs manually or in bulk, set lastmod dates, change frequency, and priority, then preview and validate the output.
Open tool →SEO optimization works best as a sequence, and this collection is organized to follow it. The natural starting point is a full audit: run your page through the AI SEO Analyzer to get a scored 0-100 report that flags missing headings, weak meta data, and keyword issues. That audit becomes your to-do list.
Next, fix the elements that appear directly in search results. Use the SEO Title Checker to make sure your title fits Google's pixel limit and leads with your keyword, and the Headline Analyzer to sharpen the on-page headline that draws readers in. Then generate a complete set of tags — title, description, Open Graph, and Twitter Cards — with the Meta Tag Generator, and add structured data with the Schema Markup Generator so search engines can show rich results.
With the framing in place, turn to the content itself. The Keyword Density Checker confirms your target terms appear often enough to signal relevance but not so often that they read as spam, and the Readability Checker verifies the copy is clear enough for your audience. Finally, handle the technical layer: produce a clean robots.txt to guide crawlers and a valid XML sitemap to help search engines discover every page. Analyze, fix titles and meta, add schema, refine content, then ship the technical files — that loop, repeated per page, is a complete on-page SEO routine.
If you are not sure where to begin, match your goal to a tool:
Yes. Every tool in this collection is completely free to use with no trial, no credit card, and no hidden upgrade wall. There are no usage limits and no premium tier that locks the useful features. We build them as genuinely useful utilities, supported by the rest of the Zovo site, so you can run a full SEO check on any page without paying anything.
No. None of these tools require an account, login, or email address. You can open any tool and start using it immediately. Because everything runs in your browser, there is nothing to register for and no profile to manage.
No. Every tool runs entirely client-side in your browser using JavaScript. The HTML, titles, and text you paste are analyzed locally on your device and are never uploaded to a server. The only external request is a standard Google Analytics page-view tag for traffic counts, which does not receive the content you enter. That makes the tools safe to use on unpublished or confidential pages.
If you have a live page, start with the AI SEO Analyzer for a full on-page audit and a prioritized list of fixes. From there, use the SEO Title Checker and Meta Tag Generator to fix your title and snippet, the Schema Markup Generator to add structured data, the Keyword Density and Readability Checkers to refine your content, and the Robots.txt and Sitemap Generators to handle technical crawl and indexing setup.
Yes. You are free to use these tools for personal, client, and commercial SEO work. The schema markup, meta tags, robots.txt files, and XML sitemaps they generate are standard, valid output that you can copy and deploy on any website you manage.