Utilities & Developer Tools
Syntax-validating JSON formatters, Base64 converters, UUID v4 generators, UNIX timestamp translators, and multi-mode timesheet work hours trackers. Instant developer utilities designed for clean engineering workflows. Built for fast, distraction-free workflows with local processing and zero clutter.
JSON Formatter & Validator
Beautify, minify, and pinpoint syntax errors in JSON payloads with AST diagnostics.
Age Calculator
Compute exact chronological age in years, months, days, total hours, and next birthday countdown.
All Available Tools
21 toolsJSON Formatter & Validator
Beautify, minify, and pinpoint syntax errors in JSON payloads with AST diagnostics.
Base64 Encoder / Decoder
Encode and decode UTF-8 text and binary payloads to and from Base64 strings.
URL Encoder / Decoder
Encode parameters to percent-encoding or decode query strings into readable URLs.
UUID Generator
Generate cryptographically secure RFC 9562 UUIDv4 identifiers in bulk.
Unix Timestamp Converter
Convert between Unix epoch timestamps (seconds & ms) and human-readable dates.
Age Calculator
Compute exact chronological age in years, months, days, total hours, and next birthday countdown.
Hours Calculator
Calculate time card shift durations, lunch breaks, and total billable work hours.
QR Code Generator
Create customizable, high-contrast SVG and PNG QR codes for links, Wi-Fi, and text.
URL Parser & Query Param Editor
Deconstruct URLs into protocol, host, path, and interactive query parameters with tracking tag removal.
Punycode / IDN Converter
Convert Internationalized Domain Names (IDN) with Unicode characters to ASCII Punycode (xn--) and back.
Hash & Checksum Generator
Generate SHA-256, SHA-512, SHA-384, SHA-1, MD5, and CRC32 cryptographic hashes and checksums.
XML Formatter & Validator
Format, beautify, and validate XML documents, sitemaps, and feeds with syntax error diagnostics.
CSV to JSON Converter
Convert CSV spreadsheets to formatted or minified JSON with automatic type inference and RFC 4180 parsing.
JSON to CSV Converter
Flatten and convert JSON object arrays into clean CSV spreadsheets with formula injection protection.
CSV Viewer & Editor
Inspect, filter, search, and sort CSV spreadsheets in a lightweight in-browser table without heavy software.
Regex Tester & Debugger
Test JavaScript regular expressions with real-time match highlighting, capture groups, and flag controls.
JWT Token Decoder
Decode and inspect JSON Web Token (JWT) header and payload claims with timestamp humanization.
Secure Password Generator
Generate cryptographically secure passwords and passphrases using globalThis.crypto.getRandomValues().
Password Strength Checker
Calculate Shannon entropy bits and estimate brute-force cracking times across multiple attack scenarios.
JavaScript Minifier & Beautifier
Minify and beautify JavaScript code client-side with comment removal, whitespace compression, and byte savings metrics.
Image to Base64 Converter
Encode PNG, JPEG, SVG, and WebP images into Data URI Base64 strings for CSS and HTML embedding.
All tools in this collection operate independently. Whether you need immediate metrics or batch transformations, each utility loads with zero setup overhead and preserves your privacy.
We design every tool to run locally in your browser wherever computationally possible. No personal data or document contents are transmitted to external servers.
Can the JSON formatter locate exact syntax errors?
Yes. Our AST parser pinpoints the precise line and column coordinate of unclosed quotes, trailing commas, or malformed braces.
Does the age calculator handle leap years accurately?
Yes. The calculator uses calendar date arithmetic accounting for leap years, variable month lengths, and exact elapsed days.