Free tools
All the tools built by Twaino, free and no signup required: counters, simulators, checkers, generators, converters…
Our free tools
50+ in-house tools to analyze, optimize and boost your site — for free.
.htaccess Generator Online
Twaino's .htaccess generator allows you to create a complete and optimized .htaccess file for your Apache server.
Use .htaccess Generator Online →AI Text Detector
Twaino's AI Text Detector is a free tool that analyzes text to determine whether it was written by artificial intelligence (ChatGPT, Claude, Gemini, e
Try AI Text Detector →Backlink Price Calculator | Free
A backlink (or inbound link) is a link placed on a third-party website that points to yours.
Test Backlink Price Calculator | Free →Base64 Encode Decoder
Base64 encoding is a method of converting binary data into an ASCII character string.
Open Base64 Encode Decoder →Broken Links Checker
Twaino's Broken Link Checker is a free tool that scans your web page to identify all links that no longer work — the infamous broken links or 404 errors.
Launch Broken Links Checker →CMS Detector Online
A CMS (Content Management System) is the software on which a website is built: WordPress, Shopify, Wix, Webflow, Drupal, PrestaShop, Joomla… Each CMS
Explore CMS Detector Online →DNS Lookup
A DNS Lookup tool (Domain Name System) allows you to query DNS servers to obtain records associated with a domain name.
Use DNS Lookup →Duplicate Content Checker
The Duplicate Content Checker from Twaino is a free online tool that allows you to detect whether text has been copied or reused from other sources on the web.
Try Duplicate Content Checker →Duplicate Line Remover
A duplicate line remover is a tool that scans a piece of text or a list and automatically strips out every duplicate entry, keeping only a single occu
Test Duplicate Line Remover →Email Extractor
An email extractor is a tool that automatically scans a block of raw text and isolates all the email addresses it contains, wherever they appear in the content.
Open Email Extractor →Embed Code Generator
In this video tutorial, I show you step by step how the image integration tool works:
Launch Embed Code Generator →Google Position Checker
The Google Position Checker from Twaino is a free SEO tool that allows you to find out the exact position of your website in Google search results for
Use Google Position Checker →Headings Extractor H1-H6
A headings extractor is a tool that analyzes the structure of titles (H1, H2, H3, H4, H5, H6) on a web page and presents them in hierarchical form.
Try Headings Extractor H1-H6 →HTML CSS Formatter Online
Twaino's HTML CSS formatter is a free online tool that allows you to beautify or minify your HTML and CSS code in just a few clicks.
Test HTML CSS Formatter Online →HTTP Status Checker
An HTTP status checker is a tool that queries a web server to find out the response code associated with a given URL.
Open HTTP Status Checker →Image Compressor Online
An image compressor is a tool that reduces image file sizes while preserving optimal visual quality.
Launch Image Compressor Online →IP Lookup / Geolocation
An IP address (Internet Protocol) is the numerical identifier assigned to every device connected to the internet.
Explore IP Lookup / Geolocation →JavaScript Minify Online
Twaino's JavaScript minifier reduces the size of your JS code by removing comments, whitespace, and unnecessary blank lines.
Use JavaScript Minify Online →JSON Formatter Online | Free
JSON (JavaScript Object Notation) is a lightweight, human-readable data format used to structure and exchange information between a server and a web application.
Try JSON Formatter Online | Free →JSON-LD Schema Generator
Schema JSON-LD (JavaScript Object Notation for Linked Data) is a structured data format recommended by Google to help search engines better understand
Test JSON-LD Schema Generator →Keyword Density Analyzer
Keyword density is the percentage of times a word or phrase appears in a text relative to the total number of words.
Open Keyword Density Analyzer →Keyword Opportunity Score | Free
In keyword research, two metrics capture the attention of SEO professionals: search volume (how many people search for this keyword each month) and ra
Launch Keyword Opportunity Score | Free →Keyword Value Estimator | Free
The value of a keyword comes down to far more than its search volume.
Explore Keyword Value Estimator | Free →Link Extractor
Twaino's Link Extractor is a free tool that analyzes any web page to automatically extract all hyperlinks.
Use Link Extractor →WHOIS Lookup
Le WHOIS Lookup de Twaino est un outil gratuit qui vous permet de rechercher les informations d'enregistrement de n'importe quel nom de domaine.
Try WHOIS Lookup →Markdown to HTML Converter Online
Twaino's Markdown to HTML converter transforms your Markdown text into clean, valid HTML code in real time.
Test Markdown to HTML Converter Online →Meta Tags Analyzer
A meta tag analyzer is a tool that examines the meta tags of a web page to evaluate their quality and compliance with SEO best practices.
Open Meta Tags Analyzer →Meta Tags Generator
Meta tags are HTML tags invisible to visitors but essential for search engines and social networks.
Launch Meta Tags Generator →Mobile-Friendly Test
Twaino's Mobile-Friendly Test is a free tool that analyzes the mobile compatibility of your web pages.
Explore Mobile-Friendly Test →On-Page SEO Audit
On-page SEO refers to all the optimization elements located directly in the code and content of a web page: title tag, meta description, heading struc
Use On-Page SEO Audit →Online Text Editor
An online text editor is a tool accessible from any web browser that allows you to write, format, and export your documents without installing softwar
Try Online Text Editor →Open Graph Checker
Open Graph is a protocol developed by Facebook that lets any web page control how it appears when shared on social networks: Facebook, LinkedIn, Whats
Test Open Graph Checker →Over-optimization Penalty Simulator | Free
Free online tool by Twaino.
Open Over-optimization Penalty Simulator | Free →Page Speed Test
Twaino's Page Speed Test is a free tool that measures the loading performance of your web pages.
Launch Page Speed Test →Password Generator
Every year, millions of online accounts are compromised due to weak passwords.
Explore Password Generator →People Also Ask | Free SEO Tool
Discover the questions your audience is asking.
Use People Also Ask | Free SEO Tool →Redirect Chain Checker
A redirect chain checker is a tool that analyzes the complete path of a URL from its starting point to its final destination.
Test Redirect Chain Checker →Rich Results Test | Twaino
The rich results are these special displays that Google offers in its search results pages: review stars, expandable FAQ, product price, breadcrumb, r
Open Rich Results Test | Twaino →Robots.txt Generator Online
Twaino's robots.txt generator allows you to visually create a complete and valid robots.txt file for your website.
Launch Robots.txt Generator Online →SEO Content Budget Calculator | Free
Free online tool by Twaino.
Explore SEO Content Budget Calculator | Free →SEO Page Comparator
An SEO page comparator is an analysis tool that lets you place the organic search elements of two distinct web pages side by side.
Use SEO Page Comparator →SEO vs Google Ads Comparator | Free
Free online tool by Twaino.
Test SEO vs Google Ads Comparator | Free →SERP Comparator
The SERP Comparator from Twaino is a free tool that allows you to compare Google search results (SERP — Search Engine Results Pages) for the same keyw
Open SERP Comparator →SERP Simulator
The title and description you provide for each of your pages represent the first card you play to stand out from your competitors on Google's search r
Launch SERP Simulator →SSL/HTTPS Checker
An SSL/HTTPS checker is a tool that analyzes a website's security certificate to ensure it is valid, properly configured, and up to date.
Explore SSL/HTTPS Checker →Title and Meta Description Pixel Checker
Most SEO tools tell you that your title tag should be between 50 and 60 characters and your meta description between 150 and 160 characters.
Use Title and Meta Description Pixel Checker →Uppercase to Lowercase Converter
Letter case refers to the way letters in a text are capitalized.
Try Uppercase to Lowercase Converter →URL Encode Decoder
URL encoding (also called "percent-encoding") is a mechanism that converts special characters in a web address into sequences readable by browsers and servers.
Test URL Encode Decoder →Word and Character Counter | Free and Online
In this video, I explain how to use Twaino's word and character counter.
Open Word and Character Counter | Free and Online →WordPress Plugins Detector
A WordPress plugin (or extension) is a software module that adds functionality to a WordPress site: contact forms, SEO, e-commerce, security, caching,
Launch WordPress Plugins Detector →WordPress Theme Detector
A WordPress theme is the visual and functional template that defines a website's appearance: layout, typography, colors, page structure.
Explore WordPress Theme Detector →XML Sitemap Generator Online
Twaino's XML sitemap generator allows you to create a valid sitemap.xml file directly from your browser.
Use XML Sitemap Generator Online →