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Developer

32Tools
★ Popular </>
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
 ★ Popular </>
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
 ★ Popular </>
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
 ★ Popular </>
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
 ★ Popular </>
Easy for BeginnersDirect Input

Regex Tester

Check regular expression matches, groups, and replacement results.

DeveloperRegular Expression
 ★ Popular </>
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
 ★ Popular </>
Easy for BeginnersDirect Input

Unix Timestamp Converter

Convert between dates and times and Unix timestamps.

DeveloperTimestamp
 ★ Popular </>
Easy for BeginnersDirect Input

Generate and Explain Cron Expressions

Check the next execution time and meaning of a Cron expression.

DeveloperCron
 </>
Easy for BeginnersDirect Input

Check MIME Type

Identify the expected MIME type from a filename or extension.

DeveloperMIME
 ★ Popular </>
Easy for BeginnersDirect Input

Test HTTP Requests

Sends GET and HEAD requests to safe, publicly accessible URLs to check response status and headers.

DeveloperHTTP·API
 ★ Popular </>
Easy for BeginnersDirect Input

REST API Testing

Tests GET·POST·PUT·PATCH·DELETE requests and JSON request bodies.

DeveloperHTTP·API
 </>
Easy for BeginnersDirect Input

HTTP status code explanations

Explains HTTP status codes and common ways to handle them.

DeveloperHTTP·API
 </>
Easy for BeginnersDirect Input

Analyze User-Agent

Analyze browser, operating system, and device indicators.

DeveloperUser-Agent
 </>
Easy for BeginnersDirect Input

IP and Domain Lookup

Look up DNS addresses and reverse DNS hostname information.

DeveloperDNS
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Easy for BeginnersDirect Input

Check DNS Propagation

Query multiple public DNS servers and compare their responses.

DeveloperDNS
 </>
Easy for BeginnersDirect Input

Test Port Connectivity

Checks whether a specified TCP port on a public server accepts connections.

DeveloperPort
 </>
Easy for BeginnersDirect Input

Check CORS Headers

Check the CORS response headers for an Origin request.

DeveloperHTTP·API
1

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.

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.

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.

Features by CategoryWeb Tool User GuideCompare File Formats