Multiple Conversion Formats
Convert audio files such as M4A, MP3, and WAV; video files such as MP4, WEBM, and MOV; and images such as JPG, PNG, and WEBP into formats suited to your needs.
Please check your input values
Find Easy-to-Use Web Tools
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Frequently used categories are listed first, with concise card descriptions.
Web Tool CategoriesRanked by actual successful usage in the last 90 days
Popular Tools
466ToolsEasy for BeginnersDirect Input
Analyze H1–H6 Structure
Check page heading order and detect duplicate H1 headings.
Websites & SEOHeadings & ALT Text
Easy for BeginnersDirect Input
Check for Missing Image ALT Text
Find missing, empty, or duplicate image alternative text.
Websites & SEOHeadings & ALT Text
Easy for BeginnersDirect Input
Broken Link Checker
Checks links on a page and summarizes error responses and access failures.
Websites & SEOBroken Links
Easy for BeginnersDirect Input
Check Redirect Chain
Check the URL redirect chain and final destination.
Websites & SEORedirection
Easy for BeginnersDirect Input
Check robots.txt
Check crawler blocking rules and sitemap declarations.
Websites & SEORobots.txt · Sitemap
Easy for BeginnersDirect Input
robots.txt Generator
Generate a robots.txt file using your website URL and allowed or disallowed paths.
Websites & SEORobots.txt · Sitemap
Easy for BeginnersDirect Input
Sitemap Validator
Validate XML sitemap structure and check URL status.
Websites & SEORobots.txt · Sitemap
Easy for BeginnersDirect Input
Sitemap Generator
Collect internal links from a webpage to generate an XML sitemap.
Websites & SEORobots.txt · Sitemap
Easy for BeginnersDirect Input
Open Graph and X Card Preview
Extracts the sharing title, description, and image information and displays them as a card.
Websites & SEOShare Card
Easy for BeginnersDirect Input
Generate Structured Data JSON-LD
Generates draft Article, Product, LocalBusiness, and FAQ schemas.
Websites & SEOStructured Data
Easy for BeginnersDirect Input
Structured Data Validator
Extracts JSON-LD from the page and checks JSON syntax and required properties.
Websites & SEOStructured Data
Easy for BeginnersDirect Input
Check HTTP security headers
Checks security headers such as CSP, HSTS, and X-Content-Type-Options.
Websites & SEOSecurity Headers
Easy for BeginnersDirect Input
Check SSL Certificate Expiration Date
Check the HTTPS certificate issuer, validity period, and days remaining.
Websites & SEOSSL
Easy for BeginnersDirect Input
Look Up DNS Records
Checks A, AAAA, MX, TXT, NS, and CNAME records.
Websites & SEODNS
Easy for BeginnersDirect Input
AI Search Visibility Readiness
Check for a clear answer structure, sources, author information, update details, and structured data.
Websites & SEOAI Search
Easy for BeginnersDirect Input
Format JSON for readability
Format JSON with indentation and sorting options.
DeveloperJSON
Easy for BeginnersDirect Input
JSON Minifier
Remove unnecessary whitespace from JSON.
DeveloperJSON
Easy for BeginnersDirect Input
JSON Comparison
Compare added, removed, and modified paths between two JSON documents.
DeveloperCompare
Easy for BeginnersDirect Input
JSON Schema Validation
Check whether JSON data conforms to the JSON Schema you provide.
DeveloperSchema
Easy for BeginnersDirect Input
XML Formatter and Validator
Format XML with indentation and check for syntax errors.
DeveloperXML
Easy for BeginnersDirect Input
YAML Formatter & Validator
Validate YAML syntax and format it for readability.
DeveloperYAML
Easy for BeginnersDirect Input
SQL Formatter
Format SQL keywords and indentation.
DeveloperFormat Code
Easy for BeginnersDirect Input
HTML Formatter
Format HTML structure with indentation for easier reading.
DeveloperFormat Code
Easy for BeginnersDirect Input
Format CSS
Format CSS rules and properties for readability.
DeveloperFormat Code
Easy for BeginnersDirect Input
Format JavaScript
Format JavaScript code with indentation.
DeveloperFormat Code
Easy for BeginnersDirect Input
HTML Minifier
Reduce comments and unnecessary whitespace.
DeveloperMinify Code
Easy for BeginnersDirect Input
Minify CSS
Reduce CSS whitespace and unnecessary separators.
DeveloperMinify Code
Easy for BeginnersDirect Input
Minify JavaScript
Reduce comments and whitespace where safe to do so.
DeveloperMinify Code
Easy for BeginnersDirect Input
Markdown preview
Convert Markdown into an HTML preview.
DeveloperMarkdown
Easy for BeginnersDirect Input
Convert Markdown to HTML
Convert Markdown documents into standalone HTML files.
DeveloperMarkdown
Easy for BeginnersDirect Input
HTML to Markdown
Convert HTML body content into Markdown text.
DeveloperMarkdown
Easy for BeginnersDirect Input
CSV to Markdown Table
Convert CSV data to Markdown table syntax.
DeveloperTable
Easy for BeginnersDirect Input
Regex Tester
Check regular expression matches, groups, and replacement results.
DeveloperRegular Expression
Easy for BeginnersDirect Input
Compare Code & Text Differences
Compare two texts for line-by-line differences.
DeveloperCompare Code
Easy for BeginnersDirect Input
Convert HTML Entities
Encode characters as HTML entities or decode them back to text.
DeveloperHTML Entities
Easy for BeginnersDirect Input
HMAC Generator
Generates HMAC-SHA256 and HMAC-SHA512 using a key and message.
DeveloperHMAC
Everything from file conversion to calculations and diagnostics in one place
REGOLITH is more than a collection of links. It provides functional web tools that take you from entering data and running tasks to reviewing and saving results. Original files remain unchanged, with results created separately. Each tool page explains supported formats, usage steps, and how to review results before you begin.
Getting Started Guide
Instructions for selecting files, configuring options, running tools, and saving results are available on a separate guide page and within each tool.
Detailed Task Descriptions
Provides format characteristics, recommended uses, guidelines for verifying calculation results, and precautions for handling sensitive files.