Developer Tools
12 free tools tagged with "developer"
Developer Tools
(9)Cron Expression Builder
Build and understand cron expressions with an interactive visual editor. Click to set schedules, see plain-English translations and next run times.
💻 Developer ToolsQR Code Generator
Generate QR codes for website URLs and plain text. Download as PNG or SVG with custom colours. Free, instant, no sign-up required.
💻 Developer ToolsImage to Base64 Converter
Convert any image to a Base64 encoded string or data URI online for free. Supports PNG, JPG, and WebP output formats. Copy with one click.
💻 Developer ToolsBase64 to Image Converter
Convert a Base64 string or data URI back to a downloadable image. Auto-detects format, shows preview, and lets you download as PNG, JPG, or WebP.
💻 Developer ToolsJSON Prettifier
Format and pretty-print JSON with proper indentation online. Choose 2 spaces, 4 spaces, or tabs. Instant formatting with error detection and stats.
💻 Developer ToolsJSON Minifier
Minify JSON by removing all whitespace and formatting. See the size reduction instantly. Free online JSON compressor with copy button.
💻 Developer ToolsJSON Validator
Validate JSON syntax and find errors with line numbers online for free. Real-time validation as you type with detailed error messages and stats.
💻 Developer ToolsHTML Encoder / Decoder
Encode special characters to HTML entities or decode HTML entities back to text. Handles all named and numeric entities with live preview.
💻 Developer ToolsMarkdown to HTML Converter
Convert Markdown to HTML code online for free. Supports headings, bold, italic, links, code blocks, lists, blockquotes, and more. Live preview included.
💻 Developer ToolsUnit Converters
(2)Date & Time
(1)Explore our collection of 12 free developer tools. Each tool works directly in your browser with no sign-up required. From calculators and converters to generators and planners - find the right tool for your needs and get results instantly.