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.
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Accessibility
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Easy for BeginnersDirect Input
Color Contrast Checker
Calculate the WCAG contrast ratio between text and background colors and evaluate AA and AAA compliance.
AccessibilityComparison
Easy for BeginnersDirect Input
Quick WCAG Page Accessibility Check
Checks form labels, landmarks, ALT text, language, headings, and keyboard accessibility indicators.
AccessibilityWCAG Accessibility Check
Easy for BeginnersFile Selection Type
Color Vision Deficiency Simulation
Preview how images appear with red-green or blue-yellow color vision deficiencies.
AccessibilityColor Vision Simulation
Easy for BeginnersDirect Input
Review Image ALT Text
Identify missing image ALT text and repetitive wording on a webpage.
AccessibilityALT
Easy for BeginnersDirect Input
Check Keyboard Navigation
Checks the tab order of links, buttons, and forms, as well as tabindex usage.
AccessibilityKeyboard
Easy for BeginnersDirect Input
Check for Missing Form Labels
Check whether input elements are correctly associated with labels and aria-label attributes.
AccessibilityForm Label
Easy for BeginnersDirect Input
Check page titles and landmarks
Checks the title, main, nav, header, footer, and lang attributes and elements.
AccessibilityLandmark
Easy for BeginnersFile Selection Type
Check PDF Reading Order
Organize PDF text blocks by coordinates and reading order for each page.
AccessibilityPDF Reading Order
Easy for BeginnersFile Selection Type
Check Subtitle Accessibility
Checks SRT and VTT subtitle timing, overlaps, and excessive character counts.
AccessibilitySubtitles
Easy for BeginnersDirect Input
Text Readability Analysis
Checks sentence length, difficult wording, excessive parentheses, and passive constructions.
AccessibilitySentence Readability
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.