16available tools
Free, fast utilities available without creating an account.
Category
Web & SEO
Create, analyze, and validate essential website elements such as URLs, metadata, SEO files, and structured data.
16 tools available
4subcategories
Clear families that help you find the right operation quickly.
16embeddable widgets
The same tools ready to embed directly on your own website.
Why this category?
Why use web & seo tools?
This category brings together quick checks that improve technical quality and discoverability. It helps prepare tags, verify configurations, and generate standard files without syntax mistakes.
These utilities complement the guides and resources available on the site. They work for both quick checks and technical preparation before deployment.
Use cases
Improve SEO
Prepare metadata, robots.txt, structured data, and indexing elements.
Check a URL
Analyze, encode, decode, or extract parts of a web address.
Prepare deployment
Generate and review technical files required before launch.
Browse by subcategory
All tools
SEO & metadata
Prepare tags, structured data, and indexing directives.
Web & SEO
Meta tags generator
Create SEO, Open Graph and Twitter/X tags for a web page.
100% local
Use this toolWeb & SEO
robots.txt generator
Create a clear robots.txt file to guide web crawlers.
100% local
Use this toolWeb & SEO
UTM URL builder
Add UTM parameters to a campaign URL.
100% localNew
Use this toolWeb & SEO
Hreflang builder and validator
Create hreflang tags from localized page versions.
100% localNew
Use this toolWeb & SEO
XML sitemap builder and validator
Create an XML sitemap from a list of URLs.
100% localNew
Use this toolWeb & SEO
SERP Snippet Simulator
Preview a search result from a title and meta description.
100% localNew
Use this toolWeb & SEO
Schema.org JSON-LD generator
Create JSON-LD structured data ready to embed in a web page.
100% local
Use this toolURLs & links
Create, analyze, encode, and validate URLs.
Web & SEO
URL encoder and decoder
Encode or decode a URL, its parameters, and any special characters it contains.
100% local
Use this toolWeb & SEO
URL extractor
Extract every URL from text and automatically remove duplicate addresses.
100% local
Use this toolWeb & SEO
Slug generator
Turn a title or phrase into a clean slug that is ready to use in a URL.
100% local
Use this toolWeb & SEO
URL validator
Validate, normalize and inspect web addresses locally.
100% local
Use this toolWeb & SEO
Query string parser and builder
Parse URL parameters or build a query string from key-value pairs.
100% local
Use this toolWeb accessibility
Check technical accessibility requirements.
Web & SEO
Contrast checker
Measure contrast between two colors and check WCAG AA and AAA levels.
100% local
Use this toolWeb analysis
Inspect browser and web-related technical information.
Web & SEO
HTML SEO Analyzer
Analyze key SEO signals in HTML locally.
100% localNew
Use this toolWeb & SEO
Local Indexability Analyzer
Detect noindex, nofollow and canonical inconsistencies from HTML.
100% localNew
Use this toolWeb & SEO
User-Agent parser
Identify the browser, operating system, device and bots in a User-Agent string.
100% local
Use this toolAll these tools are also available as widgets
Add tools from this category to WordPress, Webflow, Wix, or any HTML page with the same local processing.
Related resources
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How to optimize 50 images for the Web at once
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Frequently asked questions
Are my data uploaded?
No. Compatible tools process the entered data locally in your browser.
Can these tools be embedded?
Yes. Available widgets can be added to your website with embed code.
Do I need an account?
No account is required to use the public tools in this category.