Barcode Generator
Generate CODE39 and EAN-13 barcodes as SVG output.
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Developer Tools Tools
One-page developer tools utilities with clear inputs, immediate outputs, and practical workflows.
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Text Tools
Writing & Content
Cron Builder
Build cron expressions and ready-to-paste crontab lines from schedule fields.
Hash Generator
Generate MD5, SHA1, and SHA256 hashes from input text.
HTTP Headers Checker
Fetch response headers for a URL using HEAD requests.
JWT Decoder
Decode JWT header and payload claims for debugging.
Password Generator
Generate secure random passwords with customizable rules.
Password Strength Checker
Evaluate password strength with score, entropy estimate, and improvement tips.
Random String Generator
Generate random strings with configurable length and character sets.
Regex Tester
Test regular expressions with flags, matches, and capture groups.
SHA256 Generator
Generate SHA256 hashes from plain text input.
SQL Prettifier
Format SQL queries into readable or compact output.
Unix Timestamp Converter
Convert unix timestamps to UTC datetime and back.
URL Encoder Decoder
Encode and decode URL strings for safe query and path handling.
XML Formatter
Pretty-print, compact, and validate XML quickly.
AI Prompt Optimizer
Analyze and improve AI prompts for clarity and effectiveness.
Base64 Encoder Decoder
Encode and decode Base64 text directly in browser.
SSL Certificate Validator
Check SSL/TLS certificate validity and details.
User Agent Parser
Parse browser, OS, and device from user-agent strings.