Developer
Developer utilities for JSON, URLs, Base64, and payload debugging.
Debug routine web data formats in a focused workspace that does not require pasting payloads into a remote API.
The fastest document tasks people use most
- Format, validate, minify, and sort JSON.
- Encode or decode URLs and query strings.
- Encode text to Base64 or decode Base64 payloads.
Why this collection is useful
Search visitors usually need an answer immediately, not a sales funnel. These tools open directly, use plain controls, and keep core processing in the browser whenever files or sensitive strings are involved.
Tools in this collection
25 developer tools ready to use
🔍Regex TesterTest and debug regular expressions with real-time highlighting
Open tool🆔UUID GeneratorGenerate bulk v4 UUIDs locally with custom formatting
Open tool📝Markdown to HTMLConvert Markdown text to HTML with real-time preview
Open tool🌐HTML FormatterFormat, indent, and beautify HTML code locally
Open tool📑XML FormatterFormat, indent, and beautify XML data locally
Open tool✨SVG OptimizerClean up and format SVG code to reduce size and improve readability
Open tool⭐Favicon GeneratorGenerate favicon packages (ICO and PNGs) from any image
Open tool🔗URL Encoder/DecoderEncode and decode URLs for safe transmission and storage
Open tool🔒Base64 Encoder/DecoderEncode and decode data using Base64 encoding
Open tool{}JSON Formatter & ValidatorFormat, minify, validate, and optionally sort JSON keys locally
Open tool📱QR Code GeneratorGenerate QR codes for URLs, text, and data locally
Open tool📊Markdown Table GeneratorBuild and edit markdown tables visually with alignment controls and live preview
Open tool✍️Markdown Pro StudioProfessional-grade Markdown editor with real-time preview, Mermaid diagrams, KaTeX math, and smart tools.
Open tool🗄️SQL FormatterFormat and beautify SQL queries locally for readability
Open tool⏰Cron Expression GeneratorVisually generate and explain cron schedule expressions
Open tool💻JSON to TypeScriptConvert JSON payloads into TypeScript interfaces instantly
Open tool⚙️YAML to JSON ConverterConvert YAML configuration to JSON format locally
Open tool🎨CSS Formatter & MinifierFormat, beautify, and minify CSS code locally
Open tool🐧Chmod CalculatorCalculate Linux chmod permissions visually
Open tool🔍URL ParserParse URLs and decode query string parameters
Open tool📈UTM Link BuilderBuild Google Analytics tracking URLs easily
Open tool🌐Meta Tags GeneratorGenerate standard and Open Graph HTML meta tags for SEO
Open tool💧Image Color PickerExtract HEX/RGB colors from images using an eyedropper
Open tool📑XML to JSON ConverterConvert XML data to JSON format locally
Open tool📐Aspect Ratio CalculatorCalculate aspect ratios and missing image dimensions
Open toolPro Tip: Combine tools for a faster workflow
You can chain these tools together to handle complex tasks. For example:Add JPG receipts → Convert to PDF → Merge with a cover letter PDF → Download one final file.
Related tool collections
DocumentsMerge PDFs, convert images, and prepare simple document files in your browser.TextClean up, summarize, and transform text without sending drafts to a remote service.ConvertersConvert units, timestamps, and color formats with clear inputs and instant output.SecurityGenerate passwords and inspect tokens locally when sensitive values should stay private.