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Developer Tools

Regex, SQL, diff, JWT, timestamps, CSS generators and more.

13 tools
Apache .htpasswd Basic Auth GeneratorGenerate encrypted .htpasswd basic authentication entries (Bcrypt, SHA-1, MD5).SEO Meta Tag & OpenGraph Preview StudioGenerate SEO title tags, meta descriptions, OpenGraph, and Twitter Cards with real-time preview.cURL to Code ConverterConvert cURL shell commands into JavaScript Fetch or Python.SQL FormatterFormat and indent complex SQL database queries.Diff CheckerCompare two text files or code blocks line-by-line.IP Address ToolsValidate IPv4 / IPv6 addresses and calculate CIDR ranges.Timestamp ConverterConvert Unix epoch timestamps to ISO dates and vice versa.Cron Expression ParserExplain 5-part cron expressions in human language.JSON to TypeScriptGenerate TypeScript interfaces from a JSON sample.Border Radius GeneratorDesign CSS border-radius values visually and copy the code.Box Shadow GeneratorBuild CSS box-shadow effects with live preview and copy the code.Colour Contrast CheckerCheck text and background colours against WCAG AA/AAA contrast rules.CSS Flexbox & Grid PlaygroundExperiment with flexbox and grid layouts and copy the CSS.

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VelixaKit

Free online tools for PDFs, images, text and more. Most tools run 100% in your browser; tools marked "Uses server" say so on the page.

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Popular tools

  • Word Counter
  • JSON Formatter & Minifier
  • Image Resizer
  • Image Compressor
  • QR Code Generator
  • Background Remover (solid backgrounds)
  • Age Calculator
  • Password Generator

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