Free Online Developer Tools That Just Work

Powerful utilities for developers, DevOps engineers, and tech professionals. No sign-up, no tracking, completely free.

Available Tools

Start using our free developer tools instantly. No registration required.

Kubernetes YAML Generator

Generate production-ready Kubernetes YAML manifests for deployments, services, configmaps, secrets, and more. Simplify your K8s workflow with our intuitive generator.

Kubernetes DevOps YAML
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AWS ARN Parser & Builder

Parse, validate, and build Amazon Resource Names (ARNs). Instantly decode any ARN into its components with support for 70+ AWS services. Bulk parse multiple ARNs at once.

AWS Cloud IAM
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Docker Image Name Parser

Parse and build Docker image references. Decode registry, namespace, repository, tag, and digest from any container image name. Supports 15+ registries including Docker Hub, GHCR, ECR, and ACR.

Docker Containers DevOps
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Azure Resource ID Parser

Parse and build Azure Resource Manager IDs. Decode subscription, resource group, provider namespace, and resource type from any Azure resource identifier. Supports 30+ providers.

Azure Cloud ARM
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JWT Decoder

Decode and inspect JSON Web Tokens instantly. View header, payload, registered claims, expiration status, and signature algorithm. Supports all standard JWT algorithms.

JWT Auth Security
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JSON Formatter & Validator

Format, minify, and validate JSON data with syntax highlighting. Tree view visualization, configurable indentation, stats, and downloadable output for clean, readable JSON.

JSON Formatter Validator
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Cron Expression Parser

Parse and build cron expressions with human-readable descriptions. Preview next 10 scheduled run times, use 15+ presets, and visualize field breakdowns for scheduled tasks.

Cron Scheduling DevOps
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Base64 Encoder/Decoder

Encode and decode Base64 strings instantly. Supports text, files, and URL-safe Base64. Drag and drop files to generate data URIs with proper MIME types.

Base64 Encoding Data URI
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UUID Generator

Generate cryptographically secure v4 UUIDs. Bulk generate up to 100 at once, validate existing UUIDs, and choose output format options like uppercase or no-dash.

UUID Generator Crypto
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Regex Tester

Test regular expressions with real-time matching and syntax highlighting. View capture groups, match positions, and use 15+ common pattern presets for emails, URLs, IPs, and more.

Regex Testing Patterns
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Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates. Live clock display, relative time calculation, ISO 8601 output, and timezone-aware conversions.

Timestamp Date/Time Unix
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Hash Generator

Generate SHA-256, SHA-512, SHA-384, and SHA-1 hashes using the Web Crypto API. Hash text or files with optional HMAC support and hash comparison.

Hash SHA-256 Crypto
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URL Encoder/Decoder

Encode and decode URL components. Parse full URLs into protocol, host, path, and query parameters. Build query strings from key-value pairs.

URL Encoding Web
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Color Converter

Convert between HEX, RGB, and HSL color formats. Visual color picker, complementary colors, shade variations, and CSS code output.

Color CSS Design
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Markdown Preview

Live markdown to HTML preview with side-by-side editing. Supports headings, lists, code blocks, tables, links, and images. Export as HTML.

Markdown Preview HTML
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JSON/YAML Converter

Convert between JSON and YAML formats bidirectionally. Auto-detect input format with proper indentation and validation. No external libraries needed.

JSON YAML Converter
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Diff Checker

Compare two texts side by side. Highlight additions, deletions, and changes with line-level and character-level diffing. Ignore whitespace and case options.

Diff Compare Text
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HTML Entity Encoder

Encode and decode HTML entities. Supports named entities, numeric references, and multiple encoding modes. Includes a searchable character reference table.

HTML Entities Encoding
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CSS Minifier/Beautifier

Minify CSS to reduce file size or beautify it for readability. Shows compression stats, handles @media rules, keyframes, and CSS variables.

CSS Minify Beautify
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SQL Formatter

Format and beautify SQL queries with proper indentation. Supports SELECT, JOIN, subqueries, CTEs, and all major SQL clauses. Uppercase keywords option.

SQL Formatter Database
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Lorem Ipsum Generator

Generate placeholder text in paragraphs, sentences, or words. Multiple styles including classic Latin, hipster, and tech-themed ipsum. HTML output option.

Lorem Ipsum Placeholder Text
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Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal systems. Support for custom bases (2-36), bitwise operations, and signed integer interpretations.

Binary Hex Math
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String Case Converter

Convert text between camelCase, PascalCase, snake_case, kebab-case, dot.case, Title Case, UPPER CASE, and more. All conversions shown simultaneously.

String Case Text
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Password Generator

Generate cryptographically secure passwords using the Web Crypto API. Configurable length, character sets, strength meter, entropy calculation, and passphrase mode.

Password Security Crypto
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Chmod Calculator

Calculate Unix file permissions interactively. Click checkboxes for owner/group/others, get octal and symbolic notation, special bits, and ready-to-use chmod commands.

Unix Permissions Linux
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CSV to JSON Converter

Convert between CSV and JSON formats. Configurable delimiters, header detection, preview table, and support for quoted fields with embedded commas.

CSV JSON Data
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IP Subnet Calculator

Calculate network address, broadcast, subnet mask, wildcard mask, and host ranges from CIDR notation. IP class detection and binary representation.

Networking IP CIDR
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Text Counter & Analyzer

Count words, characters, sentences, paragraphs, and lines in real-time. Reading/speaking time estimates, word frequency, and text density analysis.

Text Counter Analysis
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Slug Generator

Generate URL-safe slugs from any text. Multiple separator options, stop word removal, max length truncation, bulk mode, and full URL preview.

URL Slug SEO
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JSONPath Tester

Test JSONPath expressions against JSON data with real-time results. Supports dot notation, recursive descent, array slicing, and filter expressions. Built-in cheat sheet.

JSON JSONPath Query
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JS Minifier

Minify JavaScript code by removing comments, whitespace, and unnecessary characters. See original vs minified size with compression stats. Download minified files.

JavaScript Minify Optimize
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XML Formatter

Format, beautify, and validate XML documents with proper indentation. Minify XML for production use. Syntax highlighting and error detection included.

XML Format Validate
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HTTP Status Codes

Complete HTTP status codes reference with search and filtering. Browse 1xx-5xx codes with descriptions, use cases, and detailed explanations. Color-coded by category.

HTTP API Reference
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CSS Gradient Generator

Create beautiful CSS gradients with a visual builder. Support for linear, radial, and conic gradients. Add color stops, adjust angles, and copy generated CSS code.

CSS Gradient Design
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Box Shadow Generator

Design CSS box shadows with a visual editor. Adjust offset, blur, spread, and color. Support for multiple shadow layers and inset shadows. Live preview included.

CSS Shadow Design
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Meta Tag Generator

Generate SEO-optimized meta tags including Open Graph and Twitter Card markup. Character counters for title and description limits. Copy all tags with one click.

SEO Meta Tags HTML
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Morse Code Translator

Convert text to Morse code and back. Supports letters, numbers, and punctuation. Visual dot-dash display with audio playback. Complete reference chart included.

Morse Encoder Audio
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Byte Converter

Convert between bytes, KB, MB, GB, TB, and PB. Support for both binary (1024) and decimal (1000) standards. Real-time conversion with common size references.

Data Size Converter Storage
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HTML to Markdown

Convert HTML to clean Markdown syntax. Handles headings, links, images, lists, tables, code blocks, and more. Download as .md file or copy to clipboard.

HTML Markdown Converter
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QR Code Generator

Generate QR codes for text, URLs, email, phone, SMS, and WiFi. Customize size and error correction level. Download as PNG image. 100% client-side generation.

QR Code Generator Image
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Citation Generator

Generate perfectly formatted citations in APA 7th, MLA 9th, Chicago 17th, and Harvard styles. Support for books, journals, websites, and more. Build bibliographies instantly.

APA MLA Citation
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Readability Score Calculator

Analyze text readability with Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, and more. Get grade level, reading time, and actionable insights to improve your writing.

Readability Writing Analysis
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JSON to TypeScript

Convert JSON data to TypeScript interfaces and types instantly. Handle nested objects, arrays, union types, and optional properties automatically.

TypeScriptJSONCode Gen
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YAML Validator

Validate, format, and beautify YAML with detailed error reporting. Convert between YAML and JSON. Configurable indentation and syntax highlighting.

YAMLValidateFormat
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HTML Formatter

Format, beautify, and minify HTML code with proper indentation. Handle self-closing tags, inline elements, and pre/code blocks correctly.

HTMLFormatBeautify
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Image to Base64

Convert images to Base64 encoded strings. Output as data URI, CSS background, or HTML img tag. Drag and drop upload, fully client-side.

ImageBase64Convert
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Color Palette Generator

Generate harmonious color palettes with complementary, analogous, triadic, and monochromatic schemes. Export as CSS, SCSS, or Tailwind config.

ColorDesignPalette
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Aspect Ratio Calculator

Calculate and convert aspect ratios for screens, videos, and images. Presets for HD, 4K, social media platforms, and custom dimensions.

RatioScreenDesign
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JSON Schema Generator

Auto-generate JSON Schema from JSON data. Detect types, patterns (email, URI, date), and nested structures. Draft-07 compliant output.

JSONSchemaValidate
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Open Graph Preview

Preview how your content looks when shared on Facebook, Twitter, LinkedIn, and Discord. Generate OG meta tags with live preview cards.

SEOSocialMeta
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Emoji Picker

Search, browse, and copy emojis by category. View Unicode code points, shortcodes, and skin tone variants. Recently used emojis saved locally.

EmojiUnicodeCopy
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Pomodoro Timer

Boost productivity with customizable Pomodoro work/break cycles. Visual progress, browser notifications, audio alerts, and daily session tracking.

TimerProductivityFocus
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Unit Converter

Convert between length, weight, temperature, volume, area, speed, time, data storage, pressure, and energy units. Real-time conversion.

ConvertUnitsCalculate
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Image Compressor

Compress images client-side with quality control. Resize, change format (JPEG, PNG, WebP), and see savings. No upload to any server.

ImageCompressOptimize
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Favicon Generator

Generate favicons from text, emoji, or uploaded images. Preview at multiple sizes and download PNG files with HTML link tags ready to use.

FaviconIconDesign
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Text to Speech

Convert text to speech using Web Speech API. Choose voice, adjust speed and pitch. Word highlighting as text is spoken. Fully client-side.

SpeechAudioTTS
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JSON Diff Viewer

Compare two JSON objects side by side. Visualize additions, removals, and changes with color-coded tree view. Deep recursive comparison.

JSONDiffCompare
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TOML Converter

Convert between TOML, JSON, and YAML configuration formats. Parse TOML tables, arrays, inline tables, and multiline strings client-side.

TOMLConfigConvert
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Placeholder Image

Generate custom placeholder images with custom dimensions, colors, and text. Download as PNG, JPEG, SVG, or WebP. Social media presets included.

ImagePlaceholderDesign
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Age Calculator

Calculate exact age in years, months, and days. Birthday countdown, zodiac signs, generation info, and fun life statistics from your birth date.

AgeDateCalculator
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Loan Calculator

Calculate EMI, total interest, and total payment for any loan. View full amortization schedule with principal and interest breakdown per month.

LoanEMIFinance
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Text Encryption

Encrypt and decrypt text using AES-256-GCM with Web Crypto API. Password-based encryption with PBKDF2. Also supports ROT13 and Caesar cipher.

EncryptSecurityCrypto
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Percentage Calculator

Calculate percentages easily. Find what X% of Y is, what percentage X is of Y, and percentage change between two values.

PercentageMathCalculator
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BMI Calculator

Calculate your Body Mass Index with metric or imperial units. Visual health scale with color-coded BMI categories.

BMIHealthCalculator
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Random Number Generator

Generate random numbers in any range. Includes dice roller, coin flip, lottery numbers, and cryptographic randomness.

RandomNumbersDice
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Scientific Calculator

Full scientific calculator with trigonometry, logarithms, exponents, factorials, memory functions, and keyboard support.

CalculatorScienceMath
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XML to JSON Converter

Convert XML documents to JSON format. Handles attributes, namespaces, CDATA sections with configurable output options.

XMLJSONConverter
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Speech to Text

Real-time speech-to-text transcription in 20+ languages using Web Speech API. Record, transcribe, and download text.

SpeechTranscriptionVoice
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Image Resizer

Resize images by pixels or percentage. Lock aspect ratio, choose output format (PNG, JPG, WebP), adjust quality.

ImageResizeCanvas
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Markdown to HTML

Convert Markdown to clean HTML with live preview. Supports GFM tables, code blocks, lists, and all standard syntax.

MarkdownHTMLConverter
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Robots.txt Generator

Visual robots.txt builder with presets for common configurations. Add user-agents, rules, sitemap references, and validate.

SEORobotsCrawlers
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Schema Markup Generator

Generate JSON-LD structured data for SEO. Support Article, Product, FAQ, HowTo, Event, Organization, and more schemas.

SchemaJSON-LDSEO
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SVG to JSX Converter

Convert SVG markup to JSX for React. Handles className, camelCase attributes, style objects, and component wrapping.

ReactSVGConverter
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HTML to JSX Converter

Convert HTML to valid JSX. Transforms class to className, for to htmlFor, style strings to objects, and more.

ReactHTMLConverter
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CSS Flexbox Generator

Visual Flexbox playground. Set direction, wrap, justify, align with live preview and instant CSS code output.

CSSFlexboxVisual
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CSS Grid Generator

Visual CSS Grid builder. Define rows, columns, gaps with drag-to-resize. Copy generated grid code instantly.

CSSGridVisual
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Code to Image

Turn code snippets into beautiful PNG images. Themes, syntax highlighting, backgrounds, and macOS window controls.

ImageCodeCanvas
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JSON to Go Struct

Generate Go struct definitions from JSON data. Handles nested structs, type inference, and json tags.

GoJSONConverter
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HMAC Generator

Generate HMAC signatures with SHA-256, SHA-384, SHA-512. Hex and Base64 output with verify mode.

HMACCryptoSecurity
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Duplicate Line Remover

Remove duplicate lines from text. Case-sensitive, trim whitespace, sort output, and show removed count.

TextUtilityDedup
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HTML Table Generator

Visual table builder with editable cells. Export as HTML, Markdown, or CSV with styling options.

HTMLTableGenerator
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TypeScript to JavaScript

Strip TypeScript types to produce plain JavaScript. Remove interfaces, generics, enums, and type assertions.

TypeScriptJavaScriptConverter
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🌐

Timezone Converter

Convert date and time between world timezones instantly.

timezonetimeconvert

Stopwatch & Timer

Stopwatch with lap times and countdown timer with alerts.

stopwatchtimercountdown
📝

Online Notepad

Browser-based notepad with autosave, find & replace, and dark mode.

notepadtext editornotes
🔢

Text to Binary

Convert text to binary, hexadecimal, octal, and decimal.

binaryhexoctal

Typing Speed Test

Test your typing speed (WPM) and accuracy with real-time feedback.

typingWPMspeed test

Email Signature Generator

Create professional HTML email signatures with templates.

emailsignatureHTML
📊

Markdown Table Generator

Build Markdown tables visually with alignment and CSV import.

markdowntableCSV

Image Cropper

Crop images in your browser with aspect ratio presets and zoom.

imagecropresize
🏆

Roman Numeral Converter

Convert between Roman numerals and decimal with step breakdown.

romannumeraldecimal
📅

Calendar Generator

Generate printable monthly calendars with date marking.

calendarmonthprint
💰

Invoice Generator

Create professional invoices with line items and print support.

invoicebillingPDF
💻

Screen Resolution Checker

Check your screen resolution, viewport, DPR, and device info.

screenresolutionviewport

Todo List

Simple task manager with filters, editing, and local storage.

todotaskschecklist
📈

Word Frequency Counter

Analyze word frequency with charts, stopwords filter, and CSV export.

wordfrequencytext analysis
🔁

Text Repeater

Repeat text multiple times with custom separators and numbering.

repeattextduplicate
🗃

JSON to SQL Converter

Generate SQL INSERT statements from JSON with dialect support.

JSONSQLINSERT
🌈

Gradient Text Generator

Create stunning CSS gradient text effects with live preview.

gradienttextCSS

Border Radius Generator

Visual CSS border-radius editor with presets and live preview.

border-radiusCSSrounded

SVG Optimizer

Clean and optimize SVG code by removing metadata and minifying.

SVGoptimizeminify
🔨

Tailwind CSS Converter

Convert vanilla CSS to Tailwind utility classes instantly.

TailwindCSSutility

Why Choose QuickUtil?

Built by developers, for developers. We believe tools should be accessible to everyone.

No Sign-up Required

Jump right in and start using our tools instantly. No account creation, no email verification, no waiting.

100% Free

All our tools are completely free to use. No hidden fees, no premium tiers, no credit card required. Ever.

Privacy First

Your data stays in your browser. We don't collect, store, or share your information. What you create is yours alone.

Developer Friendly

Clean interfaces, intuitive workflows, and instant results. Built to enhance your productivity, not slow you down.

Frequently Asked Questions

Everything you need to know about QuickUtil.dev

What tools are currently available?

We currently offer 102 free developer tools including Kubernetes YAML Generator, AWS ARN Parser, JWT Decoder, JSON Formatter, Base64 Encoder, UUID Generator, Regex Tester, Timestamp Converter, Hash Generator, Color Converter, Diff Checker, SQL Formatter, Password Generator, Chmod Calculator, IP Subnet Calculator, JS Minifier, XML Formatter, CSS Gradient Generator, QR Code Generator, and more. All tools run entirely in your browser with no sign-up required.

Is QuickUtil.dev really free?

Yes! All our tools are 100% free to use with no limitations. We're supported by non-intrusive advertisements, which allows us to keep all features free for everyone. There are no premium tiers or hidden costs.

Do I need to create an account?

No account is required. You can start using any of our tools immediately without signing up. We believe in removing barriers between you and productivity. Simply visit a tool page and start working.

How do you handle my data and privacy?

Privacy is our priority. All tools run entirely in your browser - your data never leaves your computer. We don't collect, store, or transmit any of your inputs or generated outputs. We only use analytics to understand which tools are popular and how to improve the site.