Developer Tools

84 tools

JSON, Base64, CSS, SQL, HTML — everything a developer needs in one toolkit.

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JSON Formatter

Format, validate, and beautify your JSON data online for free.

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QR Code Generator

Generate QR codes for URLs, text, Wi-Fi passwords, and more. Customize colors, size, and error correction level.

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B64

Base64 Encoder/Decoder

Encode text to Base64 or decode Base64 to text instantly.

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Color Picker & Converter

Pick colors and convert between HEX, RGB, HSL, and RGBA formats instantly.

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UUID Generator

Generate random UUIDs (v4) instantly. Bulk generate up to 100 UUIDs at once.

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Regex Tester

Test and debug regular expressions with real-time matching and highlighting.

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URL Encoder/Decoder

Encode or decode URLs and query parameters online.

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Hash Generator

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text online.

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Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa.

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JWT Decoder

Decode and inspect JSON Web Tokens (JWT). View header, payload, claims and expiration status.

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SQL

SQL Formatter

Format, beautify, and minify SQL queries online. Supports MySQL, PostgreSQL, SQLite, and standard SQL.

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CSV

JSON to CSV Converter

Convert JSON data to CSV format and CSV to JSON instantly. Free online converter for developers.

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CSV

CSV to JSON Converter

Convert CSV data to JSON format instantly. Supports custom delimiters, header options, and file upload. Free online converter.

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CSS Gradient Generator

Create beautiful CSS gradients with a visual editor. Copy the CSS code instantly.

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IP Address Lookup

Find geolocation, ISP, and other details for any IP address.

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Cron Expression Generator

Parse, validate, and generate cron expressions with a visual editor. See next scheduled run times.

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SEO

SEO Meta Tag Generator

Generate complete HTML meta tags for SEO, Open Graph, and Twitter Cards. Real-time SEO score and preview.

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CSS to Tailwind Converter

Convert vanilla CSS properties to Tailwind CSS utility classes. Supports layout, spacing, typography, and more.

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YML

JSON to YAML Converter

Convert between JSON and YAML formats instantly. Bidirectional conversion for DevOps and configuration files.

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HTML Entity Encoder/Decoder

Encode special characters to HTML entities or decode HTML entities back to text. Essential for web developers.

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Favicon Generator

Create favicons from images or text/emoji. Generate all required sizes for web, iOS, and Android.

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Color Contrast Checker

Check WCAG color contrast ratios for accessibility. Verify AA and AAA compliance for text and background colors.

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Color Palette Generator

Generate beautiful color palettes using color theory. Create complementary, analogous, triadic, and more harmony types.

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OG Image Generator

Create Open Graph images for social media sharing. Generate beautiful preview cards for your website links.

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JavaScript Minifier

Minify and beautify JavaScript code online. Remove comments, whitespace, and reduce JS file size instantly.

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CSS

CSS Minifier

Minify and beautify CSS code online. Remove comments, whitespace, and reduce file size instantly.

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HTML

HTML Minifier

Minify and beautify HTML code online. Remove comments, extra whitespace, and reduce file size.

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HTTP

HTTP Status Codes

Look up HTTP status codes with descriptions, use cases, and examples. The complete reference for 1xx, 2xx, 3xx, 4xx, and 5xx codes.

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CSS Box Shadow Generator

Generate beautiful CSS box shadows visually with live preview. Customize offset, blur, spread, color, and multiple layers.

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XML

XML Formatter

Format, validate, and minify XML documents online. Pretty-print XML with customizable indentation.

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Text to Binary Converter

Convert text to binary code and binary to text online. Supports binary, octal, decimal, and hexadecimal encoding.

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Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal bases.

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chmod Calculator

Calculate Linux file permissions in octal and symbolic notation. Visual chmod command generator.

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JSON Schema Generator

Generate JSON Schema from any JSON data. Auto-detect types, formats, and nested structures instantly.

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IMG

Image to Base64 Converter

Convert images to Base64 data URIs for embedding in HTML and CSS. Drag and drop or paste Base64 to decode.

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HTML to Markdown Converter

Convert HTML code to clean Markdown instantly. Supports headings, lists, links, images, code blocks, and more.

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JSX

HTML to JSX Converter

Convert HTML to React JSX instantly. Transforms class to className, inline styles to objects, and self-closes void elements.

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cURL

cURL Command Builder

Build cURL commands visually. Set HTTP method, URL, headers, request body, and options, then copy the generated command.

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Table

Markdown Table Generator

Create Markdown tables visually and copy the formatted output instantly

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URL

URL Parser

Parse any URL into its components — protocol, hostname, port, path, query parameters, and fragment.

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CSS

CSS Flexbox Generator

Visually design CSS flexbox layouts and copy the generated CSS code.

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Grid

CSS Grid Generator

Visually design CSS grid layouts and instantly copy the generated CSS code.

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Diff

JSON Diff Checker

Compare two JSON objects side by side and instantly see what's added, removed, or changed.

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Clip

CSS Clip Path Generator

Visually create CSS clip-path shapes with draggable handles. Generate clip-path code for polygons, circles, and ellipses.

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Tbl

HTML Table Generator

Generate clean HTML table code with customizable rows, columns, and styling options.

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CSS

CSS Animation Generator

Generate CSS @keyframes animations with live preview and customizable timing, duration, and easing.

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CLR

Color Converter

Convert colors between HEX, RGB, HSL, and HSV formats instantly with a live preview.

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Markdown 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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Bcrypt Hash Generator

Generate secure bcrypt-format password hashes and verify them — all in your browser using PBKDF2-SHA256.

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JSON to TypeScript Interface Generator

Convert JSON objects to TypeScript interfaces or type aliases instantly. Handles nested objects, arrays, nulls, and mixed types — all in your browser.

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Robots.txt Generator

Create a robots.txt file for your website with a visual editor. Control which search engine bots can crawl your pages.

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GIT

.gitignore Generator

Generate .gitignore files for any tech stack. Select your languages and frameworks to get a ready-to-use .gitignore.

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XML

XML to JSON Converter

Convert XML documents to JSON format instantly. Handles attributes, nested elements, and arrays.

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CSS Units Converter

Convert between CSS units: px, rem, em, vh, vw, %, pt, cm, mm. Adjust base font size and viewport for accurate results.

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Keycode Viewer

Press any key to see its JavaScript keyboard event properties: key, code, keyCode, which, location, and modifier states.

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SVG

SVG Optimizer

Optimize and minify SVG files by removing metadata, comments, and editor-specific attributes. Reduce file size without losing visual quality.

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Number Formatter

Format numbers with locale-specific styles, currency, grouping separators, and decimal places using the Intl.NumberFormat API.

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Email Validator

Validate email addresses instantly. Check format, detect typos in common domains, and get detailed breakdown of local part, domain, and TLD.

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TXT

HTML to Text Converter

Strip HTML tags and convert HTML to clean plain text. Preserve line breaks, decode entities, and extract readable content from any HTML.

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Color Shades Generator

Generate a complete palette of tints and shades from any base color. Get 11 Tailwind-inspired color levels in HEX, HSL, or RGB format.

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CSS

CSS Specificity Calculator

Calculate and compare CSS selector specificity. Instantly see the (A,B,C) breakdown, visualize with bar charts, and understand which selector wins when styles conflict.

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CSS Border Radius Generator

Visually generate CSS border-radius values with a live preview. Control each corner independently or uniformly, choose px or % units, and copy the CSS with one click.

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CSP

CSP Generator

Generate Content Security Policy (CSP) headers for your website. Configure directives with preset security levels, add custom sources, and copy the complete header value.

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.htaccess Generator

Generate Apache .htaccess configuration files with common rules for redirects, caching, security, and performance. Select the rules you need and copy the ready-to-use config.

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CSS

CSS Filter Generator

Create CSS filter effects with a live preview. Adjust blur, brightness, contrast, grayscale, hue rotation, saturation, sepia, and more — then copy the ready-to-use CSS.

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YML

YAML Validator

Validate and format YAML syntax online. Instantly detect errors and pretty-print valid YAML with proper indentation.

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Subnet Calculator

Calculate subnet information from an IP address and CIDR notation. Get network address, broadcast, host range, subnet mask, and more.

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Mock Data Generator

Generate realistic fake datasets with names, emails, addresses, and more. Export as JSON, CSV, or SQL instantly.

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JSON to XML Converter

Convert JSON to XML and XML to JSON instantly in your browser. Perfect for API integration, config file conversion, and data transformation.

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YML

YAML to JSON Converter

Convert YAML to JSON or JSON to YAML instantly in your browser. Supports nested objects, arrays, and all YAML data types.

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XML

CSV to XML Converter

Convert CSV data to XML format instantly. Customize the root and row tag names to match your schema. Handles quoted fields, commas in values, and special characters.

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Git

Git Command Generator

A comprehensive git command reference and generator. Filter by category, search by what you want to do, fill in parameters, and copy the ready-to-run command.

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Pixel ↔ REM/EM Converter

Convert CSS pixel values to rem and em units, and vice versa. Includes a reference conversion table.

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Text Encrypt / Decrypt

Encrypt and decrypt text using AES-256-GCM directly in your browser. No data is ever sent to a server.

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SQL

JSON to SQL

Convert JSON data to SQL INSERT statements instantly. Supports MySQL, PostgreSQL, SQLite, and SQL Server with optional CREATE TABLE generation.

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JWT Encoder

Create signed JSON Web Tokens (JWT) with custom payload claims. Signs with HS256 (HMAC-SHA256) entirely in your browser.

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HTML Formatter

Prettify and format HTML with proper indentation. Supports 2-space, 4-space, or tab indentation and attribute wrapping.

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JSONPath Tester

Evaluate JSONPath expressions against JSON data in real time. Supports filters, slices, wildcards, and recursive descent.

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CSS Triangle Generator

Generate pure-CSS triangles using the border trick. Pick a direction, size, and color — copy the CSS instantly.

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UTM Builder

Build trackable campaign URLs with utm_source, utm_medium, utm_campaign and more — fully client-side.

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CSS Cubic Bezier Generator

Visually craft CSS cubic-bezier easing curves with a draggable control-point editor and live animation preview.

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CSS Glassmorphism Generator

Build frosted-glass UI panels with live preview against four backgrounds. Outputs cross-browser CSS with the saturate() trick that makes glass look premium.

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CSS Loader Generator

Build animated CSS loaders and spinners with no JavaScript. Six styles, custom color, size, and speed — copy the HTML + CSS straight into your project.

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CSS Text Stroke Generator

Create outlined text effects with -webkit-text-stroke. Live preview with transparent, solid, or gradient fills, plus optional drop shadow. Copy the CSS in one click.

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