SEO Tools
Generators and checkers for the technical side of SEO. Fill in a form and copy correct, standards-compliant markup for your pages.
All 36 SEO tools
Grouped by what they do.
Meta tags & snippets
11 toolsControl how a page appears in search results and when shared.
- URL Encoder & Decoder Percent-encode and decode safely, and see every part of a URL.
- Favicon Generator favicon.ico, app icons, manifest and HTML tags from a logo or a letter.
- Slug Generator Readable, SEO-friendly URL slugs from any title, one at a time or in bulk.
- Meta Tag Generator Head tags with length checks and a live Google-style result preview.
- Open Graph Generator Social sharing tags with an image check and approximate link previews.
- Schema Markup Generator Fill in a form, get valid JSON-LD with Google’s required and recommended fields marked.
Show all 11 Show fewer Meta tags & snippets tools
- Canonical Tag Generator Clean up URLs and get rel="canonical" tags — for one URL or thousands.
- Open Graph & Social Preview Checker See how your link looks when shared, and fix the tags that break it.
- SERP Snippet Preview Your title and snippet as a search result — cut where results would cut them.
- Schema Markup Validator Find syntax errors, schema.org mistakes and missing Google properties in your markup.
- Open Graph & Social Share Image Generator Link-preview images with auto-fitting text and crop checks for each platform.
Sitemaps, robots & redirects
6 toolsTell search engines and other crawlers what to read, and where pages moved.
- Robots.txt Generator & Tester Create, check and test robots.txt rules exactly the way Googlebot reads them.
- XML Sitemap Generator Paste URLs, get a valid sitemap.xml — split automatically above 50,000 URLs.
- XML Sitemap Validator Check an XML sitemap against the protocol and Google’s rules.
- 301 Redirect Generator (.htaccess, Nginx, IIS) Turn old-to-new URL lists into server redirect rules, with chain and loop checks.
- Redirect Checker Follow a URL hop by hop and see what every redirect does.
- Robots.txt URL Tester See which crawlers may fetch a URL — and the exact rule that decides it.
Page & site checks
8 toolsCheck a page or a whole site for search and quality problems.
- Indexability Checker Can Google index this URL? One check, the exact reason.
- On-Page SEO Checker A one-page SEO audit with every issue explained and a score whose weighting is shown.
- Title & Meta Description Length Checker Paste a crawl or a sheet; see which titles and descriptions will be cut.
- Website Hosting Checker Who hosts a website, who runs its DNS and who handles its e-mail.
- Page Speed Test (Lighthouse via PageSpeed Insights) Lighthouse scores, Core Web Vitals and what to fix first — from Google PageSpeed Insights.
- HTTP Header Checker See what a server sends back, and what each header means for search.
- Broken Link Checker Check every link on a page and see which are broken, blocked or redirected.
- Link Extractor Every link on a page, with its anchor text and rel values — ready to filter and export.
Keywords & content
4 toolsPlan and check the words and content of a page.
- Word Counter Live word, character and sentence counts with reading time.
- Keyword Density Checker Word and phrase frequency for text or HTML, plus a target keyword check.
- Reading Time Calculator How long your text takes to read or say — and how many words fill a 5-minute talk.
- Readability Checker Seven readability formulas with their workings, plus the hardest sentences to fix.
Marketing & ads
7 toolsPlan campaigns and measure what they return.
- CPM Calculator Ad cost per 1,000 impressions — or the cost, or the impressions a budget buys.
- A/B Test Significance Calculator Is the difference real? p-value, uplift and its interval — conversions or averages.
- A/B Test Sample Size Calculator Visitors per variant and days to run — worked out before the test starts.
- URL Extractor Every link in a page’s source or any text — cleaned up, counted and filterable.
- UTM Builder (Campaign URL Builder) Tagged campaign links for GA4 — consistent names, the right channel, a QR code.
- ROAS Calculator Return on ad spend, break-even ROAS and the target you need for a profit.
- ROI Calculator What you put in, what came back — ROI, annualised ROI and a side-by-side comparison.
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SEO tools A–Z
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Collections with SEO tools
All collections →- 197 tools Developers JSON, YAML & data formats · Format, convert & run code · Encode, decode & hash · 5 more
- 107 tools Small business & tax Invoices & billing · GST, VAT & tax · Pricing, profit & stock · 4 more
- 118 tools Creators & social media Posts, captions & hashtags · YouTube · Images & graphics · 3 more
- 174 tools Students Grades, marks & exams · Essays & writing · Citations & references · 4 more
Good to know
- 24 of 36 tools run entirely in your browser; the other 12 explain on their pages what they send.
- 24 of 36 keep working without a connection once loaded.
- Results are estimates for planning and learning, not financial advice. Check the method and assumptions on each tool’s page.
Other categories
All tools →- 132 tools Developer Format, validate, encode, decode.
- 40 tools Data CSV, Excel, tables, charts.
- 95 tools Text Count, clean, sort, compare.
- 92 tools Image Compress, resize, convert, crop.
- 55 tools PDF Merge, split, extract, convert.
- 35 tools Audio & Video Convert, trim, compress media.
- 56 tools Design Colours, gradients, CSS.
- 27 tools Social Media Captions, previews, limits.
- 94 tools Finance Loans, savings, interest, tax.
- 78 tools Business Invoices, quotes, margins.
- 39 tools Legal Templates and legal maths.
- 48 tools Health BMI, calories, pregnancy.
- 51 tools Math Calculators and solvers.
- 45 tools Science Physics, chemistry, astronomy.
- 31 tools Engineering Electronics, electrical, mechanical.
- 29 tools Construction Materials, area, home costs.
- 80 tools Education Grades, citations, study.
- 36 tools Network DNS, headers, IPs, subnets.
- 35 tools Security Passwords, encryption, keys.
- 33 tools Converters Every unit, exact factors.
- 75 tools Utility Convert, count down, randomise.