Developer Tools
48 toolsJSON, Base64, CSS, SQL, HTML — everything a developer needs in one toolkit.
JSON Formatter
Format, validate, and beautify your JSON data online for free.
DevQR Code Generator
Generate QR codes for URLs, text, Wi-Fi passwords, and more. Customize colors, size, and error correction level.
DevBase64 Encoder/Decoder
Encode text to Base64 or decode Base64 to text instantly.
DevColor Picker & Converter
Pick colors and convert between HEX, RGB, HSL, and RGBA formats instantly.
DevUUID Generator
Generate random UUIDs (v4) instantly. Bulk generate up to 100 UUIDs at once.
DevRegex Tester
Test and debug regular expressions with real-time matching and highlighting.
DevURL Encoder/Decoder
Encode or decode URLs and query parameters online.
DevHash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text online.
DevUnix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa.
DevJWT Decoder
Decode and inspect JSON Web Tokens (JWT). View header, payload, claims and expiration status.
DevSQL Formatter
Format, beautify, and minify SQL queries online. Supports MySQL, PostgreSQL, SQLite, and standard SQL.
DevJSON to CSV Converter
Convert JSON data to CSV format and CSV to JSON instantly. Free online converter for developers.
DevCSV to JSON Converter
Convert CSV data to JSON format instantly. Supports custom delimiters, header options, and file upload. Free online converter.
DevCSS Gradient Generator
Create beautiful CSS gradients with a visual editor. Copy the CSS code instantly.
DevIP Address Lookup
Find geolocation, ISP, and other details for any IP address.
DevCron Expression Generator
Parse, validate, and generate cron expressions with a visual editor. See next scheduled run times.
DevSEO Meta Tag Generator
Generate complete HTML meta tags for SEO, Open Graph, and Twitter Cards. Real-time SEO score and preview.
DevCSS to Tailwind Converter
Convert vanilla CSS properties to Tailwind CSS utility classes. Supports layout, spacing, typography, and more.
DevJSON to YAML Converter
Convert between JSON and YAML formats instantly. Bidirectional conversion for DevOps and configuration files.
DevHTML Entity Encoder/Decoder
Encode special characters to HTML entities or decode HTML entities back to text. Essential for web developers.
DevFavicon Generator
Create favicons from images or text/emoji. Generate all required sizes for web, iOS, and Android.
DevColor Contrast Checker
Check WCAG color contrast ratios for accessibility. Verify AA and AAA compliance for text and background colors.
DevColor Palette Generator
Generate beautiful color palettes using color theory. Create complementary, analogous, triadic, and more harmony types.
DevOG Image Generator
Create Open Graph images for social media sharing. Generate beautiful preview cards for your website links.
DevJavaScript Minifier
Minify and beautify JavaScript code online. Remove comments, whitespace, and reduce JS file size instantly.
DevCSS Minifier
Minify and beautify CSS code online. Remove comments, whitespace, and reduce file size instantly.
DevHTML Minifier
Minify and beautify HTML code online. Remove comments, extra whitespace, and reduce file size.
DevHTTP Status Codes
Look up HTTP status codes with descriptions, use cases, and examples. The complete reference for 1xx, 2xx, 3xx, 4xx, and 5xx codes.
DevCSS Box Shadow Generator
Generate beautiful CSS box shadows visually with live preview. Customize offset, blur, spread, color, and multiple layers.
DevXML Formatter
Format, validate, and minify XML documents online. Pretty-print XML with customizable indentation.
DevText to Binary Converter
Convert text to binary code and binary to text online. Supports binary, octal, decimal, and hexadecimal encoding.
DevNumber Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal bases.
Devchmod Calculator
Calculate Linux file permissions in octal and symbolic notation. Visual chmod command generator.
DevJSON Schema Generator
Generate JSON Schema from any JSON data. Auto-detect types, formats, and nested structures instantly.
DevImage to Base64 Converter
Convert images to Base64 data URIs for embedding in HTML and CSS. Drag and drop or paste Base64 to decode.
DevHTML to Markdown Converter
Convert HTML code to clean Markdown instantly. Supports headings, lists, links, images, code blocks, and more.
DevHTML to JSX Converter
Convert HTML to React JSX instantly. Transforms class to className, inline styles to objects, and self-closes void elements.
DevcURL Command Builder
Build cURL commands visually. Set HTTP method, URL, headers, request body, and options, then copy the generated command.
DevMarkdown Table Generator
Create Markdown tables visually and copy the formatted output instantly
DevURL Parser
Parse any URL into its components — protocol, hostname, port, path, query parameters, and fragment.
DevCSS Flexbox Generator
Visually design CSS flexbox layouts and copy the generated CSS code.
DevCSS Grid Generator
Visually design CSS grid layouts and instantly copy the generated CSS code.
DevJSON Diff Checker
Compare two JSON objects side by side and instantly see what's added, removed, or changed.
DevCSS Clip Path Generator
Visually create CSS clip-path shapes with draggable handles. Generate clip-path code for polygons, circles, and ellipses.
DevHTML Table Generator
Generate clean HTML table code with customizable rows, columns, and styling options.
DevCSS Animation Generator
Generate CSS @keyframes animations with live preview and customizable timing, duration, and easing.
DevColor Converter
Convert colors between HEX, RGB, HSL, and HSV formats instantly with a live preview.
DevMarkdown to HTML Converter
Convert Markdown to clean, semantic HTML instantly. Supports headings, bold, italic, lists, links, images, code blocks, and more.
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