Free SEO Tools That
Actually Analyze Your Site
101 free tools for technical SEO, on-page checks, keyword research and content. Paste a URL and we fetch the real page, parse the HTML and report what we measured. No account, no email, no invented numbers.
Start with these
Advanced On-Page SEO Analyzer
AIPaste a URL — we fetch and score the real page, then AI writes advice tailored to what it found.
QR Code Generator
Generate QR codes for URLs, WiFi, WhatsApp and more, with custom colors and a logo.
Keyword Density Checker
Check how often a target keyword appears, and at what density.
Word Counter
Count words, characters, sentences, paragraphs, and reading time live.
Redirect Chain Checker
Follows a URL's full redirect chain server-side and flags loops, too many hops, or unexpected redirect types.
UTM Campaign Builder
Build campaign URLs one at a time or in bulk, with CSV export and saved history.
What are you trying to do?
Most people arrive with a problem rather than a tool in mind. These are the ones that come up most often, and where to start with each.
My page is not showing up in Google
Start with the Indexability Checker. It reads the status code, robots.txt, the robots meta tag, the X-Robots-Tag header and the canonical together, and tells you whether they agree. Most indexing problems are a contradiction between two of those rather than one obvious mistake — a noindex sitting behind a robots.txt block is the classic case, because the crawler is never allowed to fetch the page and so never reads the instruction telling it to drop the URL. If nothing is blocked, the Canonical Tag Checker will show whether the page is quietly nominating a different URL instead of itself.
My titles are getting cut off in search results
The SERP Snippet Preview measures your title and description in pixels rather than characters, because pixels are what Google actually truncates on. A 60-character title made of capital letters overflows where the same count in narrow lowercase fits comfortably. To check a whole section at once, the Bulk Meta Tag Checker runs the same measurement across a list of URLs or a sitemap and finds the duplicates — which are invisible when you look at one page at a time.
I need to work out why a page is slow
The Core Web Vitals Checker runs a real Lighthouse audit through Google’s PageSpeed Insights API, and reports field data from actual Chrome visitors wherever Google has enough of it. The Page Weight Checker breaks down what the page is really downloading, and the HTTP Header Checker shows the caching directives that decide how fast a repeat visit is — a page with no cache headers downloads everything again on every single view.
I want to check my structured data
The Schema Markup Validator reads JSON-LD, Microdata and RDFa from a URL, or validates code you paste before it ships. It keeps errors and warnings separate, validates nested entities in their own right — a missing price on an Offer inside a Product is usually the real reason a price never appears — and names the exact property path that failed. What it will not do is promise you a rich result, because nothing outside Google can.
I am writing content and want it to read well
The Readability Score runs six published formulas at once and explains where they disagree, which is usually more informative than any single number. The Keyword Density Checker catches a page that has drifted into over-optimization, and the Word Counter handles the basics. All three run entirely in your browser, so nothing you paste is sent anywhere.
I want to know whether AI search tools can read my site
The AI Crawler Checker reads your robots.txt and reports, bot by bot, whether GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot, Google-Extended and the rest are allowed in. It separates the crawlers that fetch pages to answer a live question — the ones that can cite and link to you — from the ones that collect training data, because blocking the first kind removes you from AI answers while blocking the second does not. A blanket Disallow written years ago for a different bot is often why a site never appears in AI search at all.
I have Search Console data and do not know where to start
Export the Performance report and drop it into the GSC Quick-Win Analyzer. It finds pages ranking in positions 4 to 15 that earn impressions but fewer clicks than their position should bring, and sorts them by how many clicks they are leaving behind. Those are usually fixed with a better title and description rather than new content, which is where the SEO Title Generator and Meta Description Generator come in. The file is parsed in your browser and never uploaded.
I moved or redesigned my site and traffic dropped
Migrations fail in predictable places. The Redirect Checker shows whether old URLs reach their new home in one 301 hop or wander through a chain, the Broken Link Checker requests every link on a page to catch internal links still pointing at URLs that no longer exist, and the XML Sitemap Validator confirms the new sitemap lists URLs that actually resolve. A sitemap full of redirects tells Google the old addresses are still the real ones.
I need keyword ideas without paying for a subscription
The Keyword Explorer pulls real Google autocomplete suggestions and classifies them by search intent. What it will not show you is a search volume number, because volume cannot be calculated from public data — it has to be licensed. Any free tool showing you a volume figure is either passing through a paid API or inventing it.
Which tool should you run first?
If you are auditing a page from scratch, run them in this order. Each step only makes sense once the one before it passes.
- 1Indexability Checker
Confirm Google is allowed to index the page at all. Nothing else matters until this passes.
- 2SEO Analyzer
Get the on-page picture in one report: title, description, headings, content, images, links and technical tags.
- 3Core Web Vitals Checker
Check loading speed, responsiveness and layout shift against the thresholds Google publishes.
- 4Schema Markup Validator
Make sure any structured data parses and carries the properties rich results need.
- 5Keyword Explorer
Find the questions and phrasings people actually search, then check the content answers them.
- 6GSC Quick-Win Analyzer
Once the page has a few weeks of data, find the queries where it ranks but under-earns clicks.
Browse by category
101 tools across 7 categories, 14 of them AI-powered.
URL & Site Analysis
29Page Weight Checker, Favicon Checker, Compression & Content-Encoding Checker and more
Text & Content Tools
16Readability Score Calculator, Word Counter, Character Counter and more
Text Formatting Tools
10Case Converter, Sentence Case Converter, Title Case Converter and more
SEO Keyword Tools
10Keyword Explorer, Keyword Prominence Checker, Keyword Placement Checker and more
URL Tools
8URL Encoder, URL Decoder, URL Length Checker and more
SEO Generator Tools
14SEO Title Generator, Meta Description Generator, H1 Generator and more
Marketing & Social Tools
14UTM Campaign Builder, QR Code Generator, AI Hashtag Generator and more
How the analysis actually works
When you submit a URL, the page is requested from our server the way a crawler would request it — following redirects, recording every hop, and reading the response headers alongside the HTML. The markup is then parsed into a document tree and inspected directly. Nothing is rendered in a browser, which is a deliberate limit worth knowing about: content a script adds after load is invisible here, and it is also what a crawler misses on its first pass.
A tool that fetches arbitrary URLs is a security problem if it is built carelessly, so every request resolves the hostname first and refuses private, loopback, link-local and cloud-metadata addresses. That check runs again on each redirect hop, which means a redirect cannot be used to reach somewhere internal. Responses are size-capped and time-limited.
Text tools work differently. Word counts, readability scores, case conversion and the rest run entirely in your browser using the same formulas a server would apply. There is no request to send, so there is nothing to log and nothing to leak — and they keep working with no connection at all once the page has loaded.
Where a tool depends on data we do not own — Google’s PageSpeed Insights API for Core Web Vitals, or Google autocomplete for keyword suggestions — the page says where the numbers come from. If that source fails, you get an error explaining what happened rather than a fabricated result standing in for one.
How this is different
Real analysis, not demos
Paste a URL and the page is fetched and parsed server-side. Every number in a report is measured from the page you gave us.
Nothing to sign up for
No account, no email, no trial that expires. The tools that run in your browser never send your text anywhere at all.
AI only where it helps
Counting words does not need a language model. Writing meta descriptions does. Tools that use AI say so, and the rest work without it.
Free SEO tools vs paid SEO suites
Free tools cover most page-level work. Paid suites earn their price on data that has to be collected at web scale. This is where the line falls.
| Task | Free on this site | What a paid suite adds |
|---|---|---|
| Technical checks on a page | Yes — indexability, redirects, headers, canonicals, robots.txt, sitemaps, SSL | Adds scheduled crawls of every page on the site |
| On-page and content analysis | Yes — full on-page report, readability, keyword density, headings | Adds content scoring against the pages that currently rank |
| Keyword research | Real autocomplete suggestions with intent labels, no volume | Licensed search volume and difficulty estimates |
| Backlinks and authority | No — needs a crawled index of the web | The main reason people pay for a suite |
| Rank tracking over time | No — use Search Console, which is free and first-party | Daily positions, including competitors |
Google’s own free tools fill several of the gaps. Search Console shows the queries you actually rank for, your positions and your clicks, straight from Google. PageSpeed Insights powers the Core Web Vitals Checker here. Keyword Planner gives broad volume ranges once you have a Google Ads account. Used together with the tools on this site, they cover what most small sites need.
What this site will not do
Plenty of free SEO tools fill the gaps in their data with numbers that look plausible and are invented. These are the things deliberately left out, and why.
No invented search volume
Search volume is licensed data and cannot be derived from anything public. The Keyword Explorer gives you real autocomplete keywords and no volume column, rather than a number that looks authoritative and was guessed.
No made-up authority scores
Domain authority, page authority and their equivalents require a backlink index that costs a fortune to build and maintain. We do not have one, so we do not print a number pretending otherwise.
No fake traffic estimates
Nobody outside a site's own analytics knows its traffic. Public estimates are models built on sampled panels, and on small sites they are wrong by orders of magnitude.
No scores without a formula
Where a tool here shows a score, the page explains exactly how it was calculated and you can recompute it by hand from the results shown. A score you cannot check is decoration.
A missing number is more useful than a wrong one. You can go and find a missing number. A wrong one you trusted becomes a decision nobody can trace back.
Common questions
Are these tools really free?
Yes. No account, no email capture, no trial that expires, and no paid tier holding the useful half hostage. The site is cheap to run because the analysis is genuinely lightweight — it parses HTML rather than rendering pages in a browser farm.
Do you store the URLs or text I submit?
No. Text tools run entirely in your browser, so what you paste never leaves your device. URL tools fetch the page server-side to do the analysis and keep nothing afterwards — no record of what was checked, no history, no profile.
Why do some tools take a URL and others take pasted text?
It depends on what is being measured. Counting words or scoring readability needs only the text, so that runs locally and stays private. Checking headers, canonicals or structured data needs the server's actual response, which a browser cannot fetch across origins — so those run server-side.
How accurate is the analysis?
Every measurement comes from the page you submitted. Where a tool depends on someone else's data, such as Google's PageSpeed Insights API, the page says so and reports a failure honestly instead of substituting an estimate. Where something cannot be known, the tool says that rather than guessing.
Which tools use AI?
The generators — titles, meta descriptions, H1s, FAQs and alt text — use a language model where writing is genuinely the task. Each is labelled, and each falls back to a rule-based mode if the AI is unavailable. Nothing that can be calculated is handed to a model instead.
Can free SEO tools replace Ahrefs or Semrush?
For page-level work, largely yes: technical checks, on-page analysis, structured data, speed and content quality do not need a subscription. What they cannot replace is anything built on a crawled index of the web — backlink profiles, competitor traffic and licensed search volume. If links are central to your strategy, that is the part worth paying for.
Will using these tools improve my rankings?
Not on their own. A tool finds problems; rankings move when you fix them and when the page answers the search better than the alternatives. The fastest gains usually come from fixing indexing blocks first, then titles and descriptions on pages that already rank on page two.
Is there a usage limit?
There is no daily cap and nothing to unlock. Tools that fetch a URL have a short per-minute limit so the server cannot be used to hammer someone else's site; if you hit it, wait a minute. Browser-based text tools have no limit at all.
Can I use these for client work?
Yes, with no restrictions and no attribution required. Several exist for exactly that: the bulk checkers and CSV exports are there because auditing forty pages for someone else is a different job from checking one of your own.