Developer Tools
Essential tools for developers and programmers
Tokenizer Playground
Real-time tokenization with popular LLM models (GPT-4, GPT-3.5, GPT-5)
Password Strength Checker
Check password strength, estimate crack time, and generate secure passwords
Cron Expression Explainer
Translate cron expressions into plain English and preview next run times
Unix Timestamp Converter
Convert Unix epoch timestamps to human-readable dates and back, in any timezone
SQL Formatter & Beautifier
Format, beautify, or minify SQL queries in 7 dialects — MySQL, PostgreSQL, T-SQL, and more
XML Formatter & Validator
Pretty-print, minify, and validate XML with error line numbers — CDATA and comments preserved
JSON Diff Checker
Compare two JSON documents structurally — added, removed, and changed values with exact paths
HTML Minifier & Beautifier
Minify HTML including inline CSS/JS, or beautify messy markup, with size savings shown
CSS Minifier & Beautifier
Minify stylesheets with CSSO or beautify compressed CSS, with byte and gzip savings shown
JavaScript Minifier & Beautifier
Minify JavaScript with Terser or beautify minified code, with byte savings shown instantly
Barcode Generator
Create CODE128, EAN-13, UPC-A, and 5 more barcode formats — download as SVG or PNG
Chmod Calculator
Convert Linux file permissions between rwx checkboxes, octal (755), and symbolic notation
IP Subnet Calculator
Get network, broadcast, host range, and masks from any IPv4 address and CIDR prefix
Cron Expression Builder
Build cron expressions visually with live plain-English output and next run times
Mock Data Generator
Generate realistic fake names, emails, dates, and UUIDs as JSON, CSV, or SQL INSERT statements
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