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 BeginnersFile Selection Type
CSV to JSON
Convert CSV rows into an array of JSON objects.
Excel & DataJSON·CSV·XLSX
Easy for BeginnersFile Selection Type
JSON to XLSX
Convert a JSON array of objects into an Excel table.
Excel & DataJSON·CSV·XLSX
Easy for BeginnersFile Selection Type
Convert XLSX to JSON
Convert the first Excel worksheet into an array of JSON objects.
Excel & DataJSON·CSV·XLSX
Easy for BeginnersFile Selection Type
XML to JSON
Convert XML hierarchies to JSON structures.
Excel & DataXML·YAML
Easy for BeginnersFile Selection Type
Convert JSON to XML
Convert a JSON array into an item-based XML document.
Excel & DataXML·YAML
Easy for BeginnersFile Selection Type
Convert YAML to JSON
Convert YAML data to JSON.
Excel & DataXML·YAML
Easy for BeginnersFile Selection Type
JSON to YAML
Convert JSON data into easy-to-read YAML.
Excel & DataXML·YAML
Easy for BeginnersFile Selection Type
Split Large CSV Files
Split a CSV into files with the specified number of rows and save them as a ZIP archive.
Excel & DataSplit
Easy for BeginnersFile Selection Type
Extract text from an image
Recognize Korean or English text in a photo and save a copyable TXT file.
Excel & DataTable OCR
Easy for BeginnersFile Selection Type
Convert Table Image to Excel
Use OCR to extract a table from an image and organize it into XLSX rows and columns.
Excel & DataTable OCR
Easy for BeginnersFile Selection Type
Anonymize Excel Data
Replaces selected columns with asterisk masking or SHA-256 hashes.
Excel & DataAnonymization
Easy for BeginnersFile Selection Type
Remove Office Document Metadata
Remove author information and document properties from PDF, DOCX, XLSX, PPTX, and other files.
Privacy & SecurityMetadata
Easy for BeginnersFile Selection Type
File SHA-256 checksum
Calculate SHA-256, SHA-1, and MD5 hashes to verify file integrity.
Privacy & SecurityIntegrity
Easy for BeginnersFile Selection Type
Check Whether Two Files Are Identical
Compare the SHA-256 hashes of two files to determine whether they are identical byte for byte.
Privacy & SecurityIntegrity
Easy for BeginnersDirect Input
Automatic Personal Data Detection
Find potential South Korean resident registration numbers, phone numbers, email addresses, and bank account numbers in text.
Privacy & SecurityPersonal Information
Easy for BeginnersDirect Input
Automatic Personal Information Masking
Partially masks South Korean resident registration numbers, phone numbers, email addresses, and bank account numbers in text.
Privacy & SecurityPersonal Information
Easy for BeginnersDirect Input
Password Strength Checker
Evaluate password strength based on length, character combinations, and common patterns.
Privacy & SecurityPassword
Easy for BeginnersFile Selection Type
View QR Code Contents
Check the URL or text embedded in a QR code before opening it.
Privacy & SecurityURL·QR
Easy for BeginnersDirect Input
Check URL Format Risks
Checks URL format risks involving HTTPS, IP addresses, Punycode, and potentially confusing syntax.
Privacy & SecurityURL·QR
Easy for BeginnersDirect Input
Secure File Deletion Guide
Provide secure deletion instructions for SSDs, cloud storage, and device transfers.
Privacy & SecuritySecure Deletion
Easy for BeginnersFile Selection Type
Anonymize Personal Information in Documents
Remove or mask personal information patterns in PDF, TXT, and DOCX files.
Privacy & SecurityPersonal Information
Easy for BeginnersDirect Input
Real Estate Investment Cash Flow
Calculate net operating income (NOI) and return on equity using rental income, vacancies, operating expenses, and principal and interest payments.
CalculatorRate of Return
Easy for BeginnersDirect Input
Compare Before and After Interest Rate Changes
Calculate monthly payments before and after an interest rate change, along with the total difference, using the same outstanding balance and repayment term.
CalculatorCompare Products
Easy for BeginnersDirect Input
Compare Fixed and Variable Interest Rates
Compares the current variable interest rate and expected rate changes with fixed-rate monthly payments.
CalculatorCompare Products
Easy for BeginnersDirect Input
Effect of Partial Principal Repayment
Compare monthly payments and estimated interest savings after making a partial principal repayment.
CalculatorEarly Repayment & Fees
Easy for BeginnersDirect Input
Compare Auto Financing, Leasing, and Long-Term Rental
Compare upfront payments and monthly costs over the same period.
CalculatorCompare Products
Easy for BeginnersDirect Input
Credit Card Revolving Interest
Estimate interest accrued during the period and the remaining balance based on the balance, fee rate, and payment percentage.
CalculatorInterest & Installments
Easy for BeginnersDirect Input
Future Value Adjusted for Inflation
Calculate how much you will need in the future to maintain your current purchasing power.
CalculatorRate of Return
Easy for BeginnersDirect Input
Product Margin and Selling Price Calculator
Calculates a recommended selling price that accounts for product costs, platform fees, advertising costs, and target profit margin.
CalculatorMargins & Profit/Loss
Easy for BeginnersDirect Input
Actual Net Profit for Online Stores
Calculate actual net profit after product costs, fees, advertising, shipping, and return costs.
CalculatorMargins & Profit/Loss
Easy for BeginnersDirect Input
Comprehensive Website Audit
Check performance, SEO, accessibility, security, and mobile readiness in a single scan.
Websites & SEOComprehensive Check
Easy for BeginnersDirect Input
Page Speed Audit
Analyzes document size, requested resources, and rendering blockers, and displays results from the PageSpeed API integration.
Websites & SEOSpeed
Easy for BeginnersDirect Input
Compare Mobile and Desktop Performance
Compare responsive design, image loading, and script overhead from mobile and desktop perspectives.
Websites & SEOMobile & Desktop
Easy for BeginnersDirect Input
Core Web Vitals Readiness
Checks HTML, CSS, and script patterns that affect LCP, CLS, and INP.
Websites & SEOCore Web Vitals
Easy for BeginnersDirect Input
Basic SEO Audit
Check page titles, descriptions, canonical URLs, indexing, headings, and body structure.
Websites & SEOBasic SEO
Easy for BeginnersDirect Input
Check Page Title & Meta Description
Checks whether search result titles and descriptions are present and within recommended lengths.
Websites & SEOTitle & Description
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.