Developer Tools

Generate Apache .htaccess rules

Generate Apache .htpasswd entries

Encrypt and decrypt text using AES-256-GCM

Compare API costs across GPT-4o, Claude, Gemini, and more

Compare AI model specs and pricing

Test prompts for injection vulnerabilities

Design multi-step AI agent workflows

Checklist for REST API endpoint design

Generate API keys in various formats

Build and send HTTP requests like a mini-Postman

Generate mock API responses from schema

Generate versioned API routes and guides

Browse ARIA roles, properties, and states

Generate accessible ARIA labels

Create ASCII art from text and patterns

Interactive ASCII/Unicode character table

Convert ASCII text to hexadecimal

Check color contrast against WCAG guidelines

Generate AI prompts for ad copywriting

Calculate exact age from birthdate

Generate SEO-friendly image alt text

Find words from scrambled letters

Generate AI prompts for article introductions

Generate CSS aspect ratio containers

Calculate and convert aspect ratios

Generate test assertions from values

Generate mnemonic seed phrases

Calculate Body Mass Index

Escape/unescape backslash sequences

Calculate transfer time and convert bandwidth

Generate Code128 barcodes as SVG

Encode/decode Base16 hex

Encode and decode Base32 with RFC 4648 support

Encode and decode Base58 data

Encode and decode Base64 with UTF-8 support

Convert Base64 strings to images

Encode/decode Base85 (Ascii85)

Generate HTTP Basic Auth headers

Convert multiple images at once

Perform binary arithmetic

Perform binary arithmetic operations

Convert between binary and decimal

Convert between binary and text

Generate AI prompts for blog post outlines

Visual border-radius editor

Generate boundary value test inputs

Visual CSS box-shadow editor with multiple shadows and live preview

Calculate break-even point

Generate sprint burndown charts

Calculate working days between dates

Convert between bytes, KB, MB, GB, TB, PB

Calculate subnet ranges from CIDR notation

Convert centimeters to pixels

Visual CORS configuration builder

Simulate CORS preflight and check headers

Calculate Cost Per Acquisition

Calculate Cost Per Click

Calculate Cost Per Mille (Thousand Impressions)

Visual Content-Security-Policy header builder

Validate Content-Security-Policy headers

Build CSS keyframe animations visually

Generate CSS @keyframes animations

Generate CSS backdrop-filter values

Create CSS clip-path shapes visually

CSS filter effects builder with live preview

Format, beautify, and minify CSS with indent options

Visual CSS gradient builder with presets for linear, radial, and conic gradients

Visual CSS Grid layout builder

Minify CSS code for production

Generate CSS reset/normalize styles

Calculate CSS selector specificity

Generate CSS triangles with border trick

Convert between CSS units

Extract and export CSS custom properties

Convert plain CSS to SCSS with nesting

Convert CSS to Tailwind utility classes

Escape/unescape CSV fields per RFC 4180

Convert CSV data to JSON arrays

Convert CSV data to JSON format

Convert CSV to SQL CREATE TABLE + INSERT

Convert between CSV and JSON with custom delimiters and file upload

Encrypt/decrypt with Caesar cipher

Validate canonical URL configurations

Convert text between camelCase, snake_case, PascalCase, kebab-case and more

Generate AI prompts for case studies

Convert text between naming conventions

Decode X.509 PEM certificates

Build chain-of-thought reasoning prompts

Generate CHANGELOG.md from commit messages

Remove specific characters from text

Compute and verify file checksums

Stopwatch with lap tracking

Flip a virtual coin for random decisions

Simulate color blindness on colors

Convert between HEX, RGB, HSL with Tailwind lookup

Show all color harmony types

Mix two colors together with adjustable ratio

Find the closest named color for any hex value

Generate harmonious color palettes from seed color

Extract dominant colors from images

Generate color palette collections

Generate shades and tints from a base color

Calculate compound interest with contributions

Parse/build database connection strings

Plan and organize content schedules

Visualize how content fills a context window

Check WCAG color contrast compliance

Parse and analyze HTTP cookies

Parse cron expressions to human-readable text

Visual cron expression builder

Translate cron expressions to human-readable text

Convert curl commands to fetch()

Convert between world currencies

Convert between 20+ currencies

Build Cypress test commands

Generate DKIM DNS records

Generate DMARC DNS records

Query DNS records for any domain including A, AAAA, MX, CNAME, TXT, NS

Check DNS propagation status

Generate DNS record configurations

Calculate DPI for print and screen

Auto-detect and mask PII in text

Map types across SQL dialects

Estimate table/index storage sizes

Add or subtract days from a date

Calculate days between two dates

Find the difference between dates

Generate dependabot.yml

Calculate asset depreciation schedules

View device and browser details

Roll virtual dice with multiple sides

Compare text side-by-side or inline

Calculate discounted prices

Visual Docker Compose builder

Convert docker-compose.yml to K8s manifests

Generate .dockerignore files

Convert docker run commands to docker-compose.yml

Generate production-ready Dockerfiles

Generate CSS duotone color effects

Remove duplicate lines from text

Generate ER diagrams from SQL/Prisma schema

Generate ESLint configuration files

Generate .editorconfig files

Prioritize tasks with urgent/important grid

Extract domains from email addresses

Parse and analyze email headers

Clean and deduplicate email lists

Extract names from email addresses

Preview email preheader text

Generate AI prompts for email writing

Create HTML email signatures

Analyze email subject line effectiveness

Build responsive email templates

Validate email address format

Calculate embedding storage and memory needs

Search and copy 400+ emojis

Generate cryptographically secure keys

Calculate social media engagement rates

Generate .env file templates

Validate .env files against schema

Generate .env.example from .env

Calculate powers, roots, logarithms

Generate AI prompts for FAQ content

Check Facebook post character limits

Generate fake email addresses for testing

Interactive fake data generator

Generate favicon HTML tags for all platforms

Reference for favicon sizes across platforms

Build few-shot prompt examples

Generate Fibonacci sequences

Generate CSS flexbox layouts visually

Generate CSS Flexbox layouts visually

Visual flexbox editor with live preview and CSS output

Test keyboard focus order for accessibility

Generate @font-face CSS rules

Generate CSS font stacks with fallbacks

Build function/tool call schemas for LLMs

Calculate GCD and LCM with steps

Convert GIF animations to MP4 video

Generate standardized git branch names

Generate git commands from descriptions

Generate conventional commit messages

Analyze git diff statistics

Generate GitHub Actions workflow YAML

Generate GitHub README.md files

Generate .gitattributes files

Randomly pick winners for giveaways

Create frosted glass CSS effects

Test glob patterns against file paths

Break down goals into actionable steps

Generate CSS mesh gradient backgrounds

Create CSS gradient text effects

Format and prettify GraphQL queries

Build GraphQL queries with variables

Convert GraphQL queries to REST endpoints

Convert GraphQL schemas to TypeScript types

Generate CSS Grid layouts visually

Build content moderation/guardrail configs

Convert HEX colors to RGB values

Convert HEX colors to RGBA with alpha

Generate HMAC-SHA256/384/512 authentication codes

Interactive HTML character code lookup

Encode/decode HTML entities

Encode and decode HTML entities

Format, beautify, and minify HTML with configurable indent options

Extract all links from HTML

Minify HTML for production

Convert HTML to JSX syntax

Convert HTML to clean Markdown

Strip HTML tags, extract plain text

Generate common HTTP headers

Parse and analyze HTTP headers

Interactive HTTP methods reference

Search and browse all HTTP status codes

Browse all HTTP status codes with details

Interactive HTTP status code reference

Analyze HTTP request timing breakdown

Track and calculate habit streaks

Track daily habits with streaks

Compare two hash values securely

Generate MD5, SHA-1, SHA-256, SHA-512 hashes

Clean and format hashtags

Count hashtags in text

Extract hashtags from text

Generate relevant hashtags for posts

Create and manage hashtag groups

Add line breaks to hashtag blocks

Analyze and score hashtag effectiveness

Validate HTML heading structure

View and edit text as hex dumps

Convert hex to decimal and other bases

Convert Apache .htaccess to nginx config

Convert images to favicon sizes

Generate CUID2, NanoID, ULID, and more

Visualize IEEE 754 float representation

Convert INI files to JSON

Look up geolocation and network details for any IP

Validate IPv4 and IPv6 addresses

Convert IPv4 between formats

Expand and compress IPv6 addresses

Search and preview Lucide icons

Extract dominant colors from images

Compress images to reduce file size

Crop images with preset aspect ratios

Generate SEO-friendly image filenames

Detect image format by file signature

View image dimensions, format, and metadata

Generate AI image generation prompts

Find aspect ratio of image dimensions

Resize images to exact dimensions

Optimize images for search engines

Estimate image file size from dimensions

Add text watermarks to images

Convert images to Base64 strings

Convert inches to pixels at any DPI

Suggest indexes from SQL queries

Generate Instagram bio templates

Check Instagram caption length

Analyze internal linking structure

Calculate ROI and CAGR

Detect zero-width and invisible chars

Generate printable invoices

Convert JPG images to PNG format

Beautify or minify JavaScript with character count

Deep structural diff between two JSON documents

Escape/unescape JSON strings

Format, validate, and minify JSON data

Build RFC 6902 JSON Patch operations

Test JSONPath expressions against JSON data with live result highlighting

Find JSONPath for nested values

Generate fake data from JSON Schema

Generate JSON Schema from sample JSON data

Validate JSON data against a JSON Schema

Convert JSON to .env KEY=value format

Convert JSON to C# classes

Convert JSON arrays to CSV format

Convert JSON arrays to CSV format

Convert JSON to Dart classes

Convert JSON to Go structs with json tags

Convert JSON to GraphQL type definitions

Convert JSON to Java classes

Convert JSON to Kotlin data classes

Convert JSON to Mongoose schema definitions

Convert JSON to PHP classes

Convert JSON to Protocol Buffer definitions

Convert JSON to Pydantic models

Convert JSON to Python dictionaries

Convert JSON to Rust structs with Serde

Convert JSON to SQL CREATE TABLE

Convert JSON to Swift Codable structs

Convert JSON to TOML format

Convert JSON to TypeScript interfaces

Convert JSON to XML format

Convert JSON to YAML format

Convert JSON to Zod schemas

Visual JWT claims builder with signing

Decode JWT tokens, inspect claims, check expiry

Create and sign JSON Web Tokens with custom claims and HMAC algorithms

Build Jest test assertions

Generate kanban boards from task list

Reference for common keyboard shortcuts

Analyze keyword frequency in text

Generate K8s Deployment/Service/Ingress YAML

Convert LESS stylesheets to plain CSS

Calculate LLM API costs per token

Generate open source license files

Count lines, words, and characters

Randomly shuffle lines of text

Sort, shuffle, deduplicate, and clean up text lines

Check LinkedIn post character limits

Estimate page load time from resources

Calculate loan payments and interest

Parse structured logs into tables

Generate placeholder text in various styles

Generate placeholder text as paragraphs, sentences, or words

Generate placeholder image URLs

Generate random MAC addresses

Identify vendor from MAC address

Look up MIME types for file extensions

Calculate MTU/MSS for different protocols

Generate mailto: links with parameters

Generate Makefiles for common project types

Live markdown editor with instant preview supporting GitHub Flavored Markdown

Generate markdown tables visually

Convert Markdown to Word-compatible XML

Convert Markdown to HTML

Calculate markup and margin percentages

Safe math expression calculator

Perform matrix operations

Calculate matrix determinant and properties

Generate responsive CSS media queries

Generate structured meeting agendas

Calculate the true cost of meetings

Validate meta description length and quality

Generate HTML meta tags for SEO

Generate ALTER TABLE migration SQL

Generate realistic fake data in JSON, CSV, or SQL

Visualize temperature/top-p effects on output

Visual MongoDB query/aggregation builder

Convert text to Morse code with audio

Decode Morse code to text

Calculate monthly payments and amortization

Generate compact URL-safe unique IDs

Calculate network propagation delay

Calculate subnet masks and IP ranges

Generate nginx server block configs

Test nginx location block matching

Convert between binary, octal, decimal, and hexadecimal

Convert between number bases and formats

Convert numbers to English words

Decode and inspect OAuth tokens

Generate and validate TOTP codes

Convert between octal, decimal, hex, binary

Preview how pages look when shared on social

Validate OpenAPI/Swagger specs

Convert OpenAPI spec to TypeScript interfaces

Generate PGP/GPG key pairs (RSA/ECC)

Convert PNG images to JPG format

Convert PNG images to WebP format

Convert pixels to REM units

Convert between px, rem, em, vh, vw

Generate package.json for Node.js projects

Estimate page load performance

Check if text is a palindrome

Generate strong passwords with configurable length, characters, and strength meter

Identify password hash algorithms

Hash and verify passwords with configurable cost rounds

Analyze password entropy, crack time, and patterns

Generate SVG background patterns

Calculate gross to net pay

Calculate percentages and changes

Calculate percentage increase or decrease

Convert percentages and fractions

Parse and format international phone numbers

Validate Pinterest pin titles

Convert pixels to inches at any DPI

Generate realistic placeholder data

Generate placeholder images for prototyping

Build optimal Playwright selectors

Plan pomodoro sessions for tasks

Calculate Pomodoro productivity statistics

Focus timer with work/break intervals

Common port numbers reference

Add vendor prefixes to CSS properties

Plan social media posting schedules

Convert Postman requests to curl

Generate .pre-commit-config.yaml

Generate .prettierrc config

Check if a number is prime

Calculate print dimensions from pixels

Convert Prisma schema to Drizzle ORM

Convert Prisma schema to SQL DDL

Generate AI prompts for product descriptions

Calculate profit margins and revenue

PERT estimation for project timelines

Build AI prompts with messages, variables, and export options

Optimize prompts to reduce token count

Convert .properties files to YAML

Convert international domain names to Punycode

Generate multiple QR codes at once

Generate QR codes from text or URLs

Read and decode QR codes from images

Solve quadratic equations step by step

Parse and build URL query strings

Encode/decode Quoted-Printable for email

Calculate optimal RAG chunk sizes

Generate professional README files

Convert RGBA colors to HEX codes

Apply ROT13 cipher and ROT47 encoding

Generate RSA key pairs in PEM format

Generate cryptographically secure random bytes

Generate fake data for testing

Generate random letters

Generate random numbers in any range

Randomly pick items from a list

Calculate rate limits and generate code

Solve and simplify ratios

Estimate reading time for content

Build Redis commands with docs

Escape/unescape regex special characters

Explain regex patterns in plain English

Generate regex from examples and patterns

Generate test strings for regex patterns

Test regular expressions with live highlighting

Strip empty lines from text

Collapse multiple spaces to single

Generate renovate.json

Calculate request timing and percentiles

Calculate CSS breakpoints for responsive design

Calculate fluid typography with clamp()

Create sprint retrospective boards

Generate AI prompts for content rewriting

Build robots.txt files visually

Convert between Roman and Arabic numerals

Convert SCSS/SASS to plain CSS

Analyze meta tags for SEO optimization

Generate AI prompts for SEO titles

Generate SPF DNS records

Visualize SQL EXPLAIN output

Escape strings for safe SQL queries

Format SQL with dialect and indent options

Generate SQL INSERT statements

Visual SQL query builder

Convert SQL to Knex.js query builder

Convert SQL queries to MongoDB queries

Convert SQL CREATE TABLE to Prisma schema

Convert SQL to Sequelize models

Generate Subresource Integrity hashes

Generate SSH key pairs

Check SSL/TLS certificate details and expiry

Decode and inspect SSL certificates

Generate SSL/TLS config for web servers

Optimize SVG by removing comments, metadata, and unnecessary data

Understand and configure SVG viewBox

Convert SVG to CSS background-image

Convert SVG markup to JSX components

Convert SVG to PNG images

Convert between hourly, monthly, and annual salary

Calculate sales tax and totals

Generate JSON-LD structured data

Full-featured scientific calculator

Generate accessible text for screen readers

Custom scrollbar CSS generator

Scan text for leaked API keys and tokens

Generate realistic seed data SQL

Parse, compare, and validate semver strings

Compare semantic version numbers

Convert text to sentence case

Escape arguments for shell commands

Generate XML sitemaps for websites

Convert text to URL-friendly slugs with transliteration

Generate Twitter-style Snowflake IDs

Generate platform-optimized social bios

Generate AI prompts for social media captions

Reference for social media image dimensions

Resize images for social media platforms

Generate social media post ideas

Generate consistent spacing scales

Track and analyze sprint velocity

Generate CSS for sprite sheets

Generate responsive image srcset attributes

Calculate statistical measures

Generate formatted daily standup notes

Calculate mean, median, mode, and standard deviation

Escape and unescape strings for JSON, HTML, URL, XML, CSV

Generate hash from string input

Analyze string length in bytes/chars/graphemes

Generate JSON-LD structured data

Design JSON schemas for structured LLM output

Convert Stylus stylesheets to plain CSS

Calculate IP subnets and CIDR ranges

Generate SRI hashes for script/link tags

Generate AI prompts for content summaries

Generate AI prompts for customer support

Build structured system prompts for LLMs

Generate systemd service/timer units

Calculate and visualize TCP flags

Format and validate TOML files

Convert TOML to YAML format

Convert between TOML and JSON formats

Generate Time-based One-Time Passwords

Generate TypeScript tsconfig.json files

Sort Tailwind CSS classes by official order

Generate tailwind.config.js from settings

Generate a full 50-950 Tailwind color palette from any base color

Convert Tailwind classes to plain CSS

Calculate US/UK income tax by brackets

Convert between C, F, and K

Generate Terraform resource blocks

Generate test cases from function signatures

Generate realistic test data

Compare two texts with highlighted differences

Generate CSS text gradient effects

Repeat text multiple times

Reverse text characters or lines

Generate CSS text-shadow effects