Data Tools
Encoding, hashing, and data format conversion utilities
What's in this category
String manipulation, encoding, hashing, and diffing — the low-glamour utilities that show up in nearly every troubleshooting session. Whether you're checking if two config files differ, decoding a Base64 blob from a packet capture, generating UUIDs for test data, or validating a JSON payload returned by an API, these tools handle the routine transformations so you can keep moving.
The Base64 & Hash Tools page handles encoding/decoding plus MD5, SHA-1, SHA-256, and SHA-512 — useful for verifying downloads, comparing file integrity, or working with API signatures. String Tools covers case conversion, trimming, escaping, and URL/HTML encoding. Text Diff compares two blocks of text with side-by-side highlighting. UUID Generator produces v4 UUIDs in bulk. JSON Formatter validates, prettifies, and minifies JSON with exact line and column on syntax errors. Measurement Converter handles unit conversions for length, weight, volume, and more.
Base64 & Hash Tools
Encode/decode Base64, generate hashes (MD5, SHA-1, SHA-256, SHA-512), URL encode/decode, and hex conversion. Essential encoding utilities for API testing, certificates, and passwords.
Open ToolsString Manipulation Toolkit
Case conversion (UPPER, lower, Title, camelCase, snake_case, kebab-case), line operations (trim, sort, reverse), duplicate removal, and escape/unescape for HTML, JSON, SQL, and more.
Open ToolsText Diff Tool
Compare text files and find differences with side-by-side visualization. Line-by-line comparison with syntax highlighting for added, removed, and modified lines. Perfect for config file comparisons and code reviews.
Open ToolUUID/GUID Generator
Generate, validate, and convert UUIDs/GUIDs. Supports UUID v1 (timestamp), v4 (random), and v5 (name-based) with batch generation, validation, and multiple output formats. Includes conversion to various formats and detailed UUID analysis.
Open ToolMeasurement Converter
Comprehensive unit converter for length, weight, volume, area, cooking measurements, temperature (C/F/K), SI prefixes, scientific notation, significant figures, pressure, energy, and trigonometry. Includes unit circle reference and live trig calculator.
Open ToolJSON Formatter & Validator
Format, minify, and validate JSON locally in your browser. Custom indent (2/4 spaces or tabs), sort keys alphabetically, line-and-column error reporting, plus escape and unescape for JSON string literals.
Open ToolPrivate by default
Every transformation here runs in your browser. Pasting a hash to check it, decoding a payload, comparing two configs — none of that data ever leaves the page. Use these tools on production data without worrying about leakage policies or service uptime.
Useful next: Network Tools for format conversions in network contexts (IP to binary, bytes to gigabits). System Tools for credential generation, certificate work, and JWT decoding.