Free Developer Tools

Tool Pipeline Builder

Chain tools together like Unix pipes. Output from one transformation feeds into the next. World's first.

Pipeline Chain Transform NEW

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QR Code Generator

Create QR codes for URLs, text, WiFi, email, and more. Download as PNG instantly.

URL Text WiFi Download

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Password Generator

Generate cryptographically secure passwords with customizable length and character sets.

Secure Custom Strength

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JSON Formatter

Format, validate, and minify JSON with syntax highlighting and tree view.

Format Validate Minify Tree

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Color Palette

Generate beautiful color palettes. Complementary, analogous, triadic modes with WCAG contrast.

Harmony WCAG Export

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CSS Gradient Generator

Create stunning CSS gradients visually. Linear, radial, conic with live preview and code.

Linear Radial Conic Presets

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Text Analyzer

Word count, readability score, keyword density, reading time, and SEO analysis in real-time.

Words Readability SEO

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Base64 Encoder

Encode and decode text or files to Base64. Drag & drop files, image preview, URL-safe mode.

Encode Decode Files

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Regex Tester

Test regular expressions with real-time highlighting, match details, and a built-in cheat sheet.

Match Replace Patterns

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Markdown Preview

Write Markdown and see beautifully rendered HTML in real-time. Export as HTML or copy to clipboard.

Live Export HTML

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Image Compressor

Compress JPEG, PNG, and WebP images client-side. Adjust quality, resize, and compare before/after.

JPEG PNG WebP

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Unit Converter

Convert length, weight, temperature, area, volume, speed, data, and time units instantly.

8 Categories 100+ Units

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Lorem Generator

Generate placeholder text in 4 styles: Classic Latin, Business, Tech, and Marketing. Paragraphs, sentences, or words.

4 Styles Copy

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CSS Beautifier

Beautify or minify CSS with syntax highlighting, line numbers, and one-click copy or download.

Format Minify Highlight

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Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files. All processing client-side.

MD5 SHA-256 SHA-512

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Timestamp Converter

Convert Unix timestamps to human dates and back. Live clock, 14 timezones, relative time display.

Unix ISO 8601 Zones

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Diff Checker

Compare two texts side by side with Myers diff algorithm. Word-level highlights, line numbers, and stats.

Side by Side Inline Words

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Emoji Picker

Browse, search and copy emojis instantly. 1800+ emojis organized by category with skin tone support and recent history.

1800+ Emojis Search Copy

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Meta Tag Generator

Generate perfect meta tags for SEO, Open Graph, and Twitter Cards. Live preview of how your page appears in search results and social media.

SEO Open Graph Twitter

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Favicon Generator

Create favicons from text, emoji, or uploaded images. Generate all sizes including Apple Touch icons with live browser tab preview.

ICO PNG Apple Touch

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Box Shadow Generator

Design beautiful CSS box shadows with a visual editor. Multiple layers, inset shadows, and one-click copy for your stylesheets.

Visual Multi-Layer CSS

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Pomodoro Timer

Stay focused with the Pomodoro technique. Customizable work/break intervals, session tracking, and audio notifications.

Focus Productivity Timer

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Markdown Table Generator

Create and edit Markdown tables visually. Add rows and columns, set alignment, import CSV data, and export clean Markdown.

Visual Editor CSV Import Markdown

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Color Converter

Convert colors between HEX, RGB, HSL, CMYK, and more. Color picker, contrast checker, and accessibility ratings included.

HEX RGB HSL

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Placeholder Image

Generate placeholder images for your designs and mockups. Custom sizes, colors, text overlays, and instant PNG download.

Custom Size PNG Mockups

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SVG Optimizer

Optimize and clean SVG files. Remove metadata, comments, unnecessary attributes, and reduce file size while keeping quality.

Optimize Clean SVG

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Aspect Ratio Calculator

Calculate and convert aspect ratios. Scale dimensions, common presets (16:9, 4:3, 1:1), CSS generator, and unit conversion.

16:9 Scale CSS

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Crontab Generator

Build cron expressions visually. Quick presets, natural language description, next 5 runs preview, and validation.

Visual Presets Validate

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JSON to CSV

Convert JSON arrays to CSV and back. Handle nested objects, choose delimiters, preview data table, and download results.

JSON CSV Convert

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HTML to Markdown

Convert HTML to clean Markdown and vice versa. Handles headings, links, lists, tables, code blocks, and GitHub Flavored Markdown.

HTML Markdown GFM

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chmod Calculator

Visual Unix permission calculator. Checkboxes for read/write/execute, octal and symbolic notation, common presets, and ls -la preview.

Unix Permissions Octal

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IP Address Info

Look up any IP address. Auto-detect your IP, show location, ISP, timezone. Subnet calculator and binary conversion included.

Lookup Subnet GeoIP

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Noise Generator

Background noise generator with Web Audio API. White, pink, brown noise. Mix types, set timer, binaural beats, and audio visualization.

Audio Focus Web Audio

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URL Encoder

Encode and decode URLs. Full URL parser, query string builder, Base64 URL encoding, unicode and emoji support.

Encode Decode Parse

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Text Case Converter

Convert text to any case: UPPER, lower, Title, camelCase, snake_case, kebab-case, PascalCase. Plus sort, deduplicate, and strip HTML.

Cases Transform Sort

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Pixel Ruler

On-screen pixel measurement tool. Canvas rulers, click-and-drag measuring, grid overlay, px/em/rem conversion, and DPI awareness.

Measure Grid Pixels

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YAML/JSON Converter

Convert between YAML and JSON formats. Syntax validation, beautification, configurable indentation, and support for complex nested data.

YAML JSON Convert

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UUID Generator

Generate UUID v4 tokens in bulk. Options for uppercase/lowercase, with/without hyphens. Copy individual or all, download as text file.

UUID GUID Generate

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CSS Animation Generator

Create CSS keyframe animations visually. 15+ presets (bounce, fade, shake, pulse), customizable timing, live preview, copy CSS code.

CSS Animation Keyframes

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SQL Formatter

Format and beautify SQL queries with syntax highlighting. Indent options, uppercase keywords, common examples. Supports SELECT, INSERT, CREATE TABLE.

SQL Format Database

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JWT Decoder

Decode JSON Web Tokens instantly. View header, payload, signature with syntax highlighting. Expiration check. Client-side only — your tokens stay private.

JWT Auth Decode

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HTML/CSS/JS Minifier

Minify HTML, CSS, and JavaScript. Remove comments, collapse whitespace. Shows original vs minified size with percentage saved.

Minify Compress Optimize

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Open Graph Generator

Generate OG and Twitter Card meta tags. Live preview of how your page looks on Facebook, Twitter, LinkedIn. Copy-ready HTML tags.

SEO Social Meta Tags

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.htaccess Generator

Generate Apache .htaccess rules for redirects, caching, security headers, HTTPS forcing, and URL rewriting. Copy-ready configurations.

Apache Server Config

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Cron Expression Builder

Build cron expressions visually with a drag-and-drop interface. See human-readable descriptions, next 5 execution times, and common presets.

Scheduler DevOps Cron

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Border Radius Generator

Visual border-radius editor with individual corner control, blob shape generator, and live preview. Copy CSS instantly.

CSS Visual Design

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Robots.txt Generator

Build robots.txt files with visual editor. Configure crawl rules per bot, add sitemap references, validate syntax, and preview results.

SEO Crawler Config

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SVG to CSS Converter

Convert SVG code to CSS background-image with URL encoding, Base64, and data URI formats. Preview and optimize inline SVG for production.

SVG CSS Converter

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CSS Grid Generator

Visual CSS grid layout builder with drag-to-resize cells, gap control, template areas, and responsive breakpoints. Copy-ready CSS.

CSS Layout Visual

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Tailwind CSS Converter

Convert vanilla CSS to Tailwind utility classes. Paste CSS, get Tailwind equivalents with responsive prefixes and hover states.

Tailwind CSS Converter

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Word Counter

Advanced word, character, sentence counter with reading time, keyword density, readability score (Flesch-Kincaid), and export.

Text Analysis SEO

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JSON to TypeScript

Convert JSON objects to TypeScript interfaces and types. Support nested objects, arrays, optional properties, and naming conventions.

TypeScript JSON Converter

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CSS Minifier

Minify CSS with options for removing comments, whitespace, empty rules. See size reduction stats. Beautify mode included.

CSS Minify Optimize

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Email Signature Generator

Create professional HTML email signatures with photo, social links, company info. Multiple templates — corporate, minimal, creative, dev.

Email HTML Business

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Flexbox Playground

Visual flexbox CSS playground. Configure container properties, item sizing, order, and alignment. Live preview with copy CSS output.

Flexbox CSS Visual

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Markdown to HTML

Convert Markdown to clean HTML with GFM support — tables, task lists, strikethrough, code blocks with syntax highlighting. Split-pane editor.

Markdown HTML Converter

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Privacy Policy Generator

Generate GDPR/CCPA compliant privacy policies. Form-based: company info, data collected, cookies, third parties. Formatted HTML/text output.

Legal GDPR Generator

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Slug Generator

Convert text to URL-friendly slugs. Multiple formats (kebab, snake, camel), special character transliteration, bulk mode, and history.

URL SEO Text

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API Request Builder

Build and test HTTP requests visually. GET/POST/PUT/DELETE, custom headers, JSON/form body, auth modes, response viewer with timing.

API HTTP Testing

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Terms of Service Generator

Generate professional terms of service. Company info, jurisdiction, user restrictions, liability, refund policy. Formatted HTML/text output.

Legal ToS Generator

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HTML Entity Encoder

Encode text to HTML entities and decode entities back. Named & numeric entities, bulk processing, reference table.

HTMLEncoder

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CSV to JSON Converter

Parse CSV with headers to JSON. Custom delimiters, quoted fields, reverse conversion. Download as .json file.

CSVJSONConverter

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XML Formatter & Validator

Format, beautify, validate XML. Syntax highlighting, custom indentation, minify option, error reporting.

XMLFormatterValidator

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Text Case Converter

UPPER, lower, Title, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE & more. One-click copy.

TextCaseConverter

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JavaScript Minifier

Minify and beautify JavaScript. Remove whitespace & comments, compression ratio, ES6+ support, syntax highlighting.

JavaScriptMinifier

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JSON Schema Generator

Paste JSON to auto-generate JSON Schema. Pattern detection, format validators, Draft 4/6/7/2020-12 support.

JSONSchema

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Image to Base64

Convert images to Base64 data URIs. Drag & drop, preview, HTML/CSS output. PNG, JPG, GIF, SVG, WebP.

ImageBase64Converter

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HTML Table Generator

Visual table editor. Click-to-edit cells, add rows/columns, style options, import CSV. Clean HTML & CSS output.

HTMLTableGenerator

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CSS Clip Path Generator

Visual clip-path editor. Preset shapes, custom polygon with draggable points, live preview, CSS output with prefixes.

CSSClip PathVisual

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Number Base Converter

Binary, Octal, Decimal, Hex conversion. ASCII to binary, IEEE 754, two's complement. BigInt support.

BinaryHexConverter

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cURL to Code Converter

Parse cURL commands, generate code in JS, Python, PHP, Go, Ruby, Java, Rust. Handle all curl flags.

cURLCodeMulti-lang

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JWT Generator

Generate JWT tokens with custom claims. Algorithm support, expiration picker, visual token breakdown with color coding.

JWTAuthGenerator

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HTTP Status Codes

Complete HTTP status code reference (1xx-5xx). Search, filter, color-coded. Detailed descriptions & use cases.

HTTPReference

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Responsive Design Tester

Preview URLs at different viewports. iPhone, iPad, MacBook presets. Custom sizes, rotate, side-by-side compare.

ResponsiveTesting

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JSON Path Finder

Navigate JSON tree visually. Click values for path notation. JSONPath queries, type icons, collapsible tree.

JSONPathQuery

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TypeScript Playground

Interactive TypeScript type playground. Built-in utilities, type challenges, patterns library. Learn types hands-on.

TypeScriptTypesLearning

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Color Contrast Checker

WCAG accessibility contrast checker. Test foreground/background colors for AA and AAA compliance.

A11yWCAG

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CSS Specificity Calculator

Calculate CSS selector specificity. Compare selectors, rank by priority, visual breakdown.

CSSSpecificity

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CSS Filter Generator

Visual CSS filter effects. Blur, brightness, contrast, grayscale, hue-rotate with live preview and presets.

CSSFilters

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CSS Unit Converter

Convert between px, rem, em, vw, vh, %, pt. Configurable base font size and viewport.

CSSUnits

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Color Shade Generator

Generate full color palettes from a base color. Export as CSS variables, Tailwind config, SCSS.

ColorPalette

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.gitignore Generator

Generate .gitignore files for any tech stack. Node.js, Python, Java, Go, React, and more.

GitConfig

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README Generator

Interactive README.md builder with badges, TOC, sections. Templates for libraries, APIs, apps.

MarkdownDocs

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Docker Compose Generator

Visual Docker Compose builder. Add services, ports, volumes, env vars. LAMP, MEAN, WordPress presets.

DockerDevOps

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Nginx Config Generator

Generate nginx server blocks. Static sites, reverse proxy, SSL, security headers, gzip, rate limiting.

NginxServer

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tsconfig.json Generator

Interactive TypeScript config builder. Presets for React, Next.js, Node.js. Explains each option.

TypeScriptConfig

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JSON Diff Tool

Visual JSON comparison. Highlight added, removed, changed keys. Deep diff with expandable tree view.

JSONDiff

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JSON to XML Converter

Convert JSON to XML and vice versa. Configurable root element, pretty print, CDATA options.

JSONXML

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Regex Builder

Interactive regex pattern builder. Visual blocks, live testing, pattern library, plain English explanations.

RegexBuilder

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Git Command Builder

Interactive git command generator. Select operations, toggle flags, get the right command instantly.

GitCLI

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Multi-Format Encoder/Decoder

Swiss army knife for encoding. Base64, URL, HTML entities, Unicode, Hex, Binary, ROT13, hashing.

EncodingMulti

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Color Blindness Simulator

Simulate 8 types of color vision deficiency. Test accessibility of your color choices.

A11yVision

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Font Pair Generator

Curated Google Font pairings with live preview. Generate CSS with import URLs. Multiple contexts.

FontsDesign

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Typography Scale Generator

Generate type scales with ratio presets. Export CSS, SCSS, Tailwind. Visual heading preview.

TypographyScale

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SVG Path Editor

Visual SVG path editor. Click to add points, drag curves. Grid, zoom, preset shapes.

SVGEditor

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OG Image Preview

Preview social media cards for Twitter, Facebook, LinkedIn, Discord. Generate meta tags.

SEOSocial

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DNS Lookup Tool

Look up DNS records via DNS-over-HTTPS. A, AAAA, CNAME, MX, TXT, NS, SOA records.

DNSNetwork

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HTML Live Preview

Live HTML/CSS/JS editor with instant preview. Templates, console output, download as file.

HTMLEditor

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Barcode Generator

Generate barcodes: Code 128, Code 39, EAN-13, EAN-8, UPC-A. Download PNG or SVG.

BarcodeGenerator

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Calendar Event Generator

Create .ics calendar events. Recurrence, reminders, attendees. Download or add to Google Calendar.

Calendar.ics

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vCard Contact Generator

Generate vCard (.vcf) contact files. Name, email, phone, social media, QR code export.

vCardContact

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Glassmorphism Generator

Create frosted glass CSS effects. Blur, transparency, border controls with live preview.

CSSGlass

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Neumorphism Generator

Generate soft UI / neumorphic CSS. Flat, concave, convex, pressed shapes.

CSSSoft UI

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Gradient Text Generator

Apply CSS gradients to text. Linear, radial, conic with multiple color stops.

CSSText

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CSS Text Shadow Generator

Build text shadows with multiple layers. Neon glow, 3D, retro, outline presets.

CSSShadow

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CSS Transform Playground

Rotate, scale, translate, skew with live preview. Perspective and origin controls.

CSSTransform

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ESLint Config Generator

Build .eslintrc.json visually. Airbnb, Standard, Google presets. Plugin selection.

ESLintConfig

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package.json Generator

Scaffold package.json files. Scripts, dependencies, license picker, download ready.

Node.jsConfig

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HTML Email Builder

Build responsive HTML email templates. Section-based editor with live preview.

EmailHTML

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CSS Variables System

Generate CSS custom properties. Color palette shades, typography, spacing tokens.

CSSTokens

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EditorConfig Generator

Build .editorconfig files. Per-filetype indent rules, presets, visual editor.

EditorConfig

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XML to JSON Converter

Convert XML to JSON. Paste or upload, preserve attributes, error highlighting.

XMLJSON

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CSV Spreadsheet Editor

Edit CSV data in a spreadsheet grid. Import, sort, filter, export as CSV or JSON.

CSVEditor

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Data URL Generator

Convert files to data: URLs. Drag & drop images, SVGs. Size comparison included.

Base64Data URL

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Text to Binary Converter

Convert text to binary, octal, decimal, hex. Character breakdown table included.

BinaryEncoding

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JSON Resume Builder

Build resumes in JSON Resume format. Work, education, skills, live preview + export.

ResumeJSON

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Percentage Calculator

All percentage calculations. What is X% of Y, percentage change, increase/decrease.

MathPercentage

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Date Calculator

Date difference, add/subtract time, age calculator, day of week, countdown.

DateCalculator

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IP Subnet Calculator

Calculate network/broadcast address, host range, wildcard mask. CIDR notation.

NetworkIP

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Loan Calculator

Mortgage & loan calculator. Monthly payment, amortization schedule, interest chart.

FinanceLoan

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BMI Calculator

Body Mass Index calculator. Metric & imperial, color-coded results, healthy range.

HealthBMI

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Schema Markup Generator

Build JSON-LD schema markup. Article, Product, FAQ, LocalBusiness, Event types.

SEOSchema

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Social Card Preview

Preview Twitter, Facebook, LinkedIn share cards. Generate all OG + Twitter meta tags.

SocialPreview

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XML Sitemap Generator

Build XML sitemaps. Add URLs, set priorities, changefreq. Copy or download .xml.

SEOSitemap

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SEO Title & Meta Tester

Test title & meta description lengths. Google SERP preview, pixel width, keyword density.

SEOSERP

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Color Palette from Image

Extract dominant colors from any image. K-means clustering, export as CSS or JSON.

ColorImage

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