Most Popular Tools

Essential utilities used by thousands of developers every day.

JWT Decoder

Decode and verify JSON Web Tokens (JWT) with ease

Base64 Converter

Encode and decode Base64 strings and images

JSON Formatter

Format, validate, and beautify JSON data

URL Encoder

Encode and decode URL strings

Regex Tester

Test and debug regular expressions

Case Converter

Convert text to uppercase, lowercase, title case, camelCase, snake_case

Word Counter

Count words, characters, sentences, paragraphs with reading time

Text Diff Checker

Compare two text blocks and highlight differences line by line

Find and Replace

Find and replace text with regex support and preview

Duplicate Line Remover

Remove duplicate lines and keep only unique text

Markdown Editor

Write and preview Markdown with live rendering

Email Extractor

Extract all email addresses from text automatically

Password Generator

Generate strong, secure random passwords with customizable options

Password Strength Checker

Analyze password strength with entropy calculation and security tips

AES Encryption

Encrypt and decrypt text using AES-256-GCM encryption

SSH Key Generator

Generate SSH key pairs (RSA, ED25519) online

Security Headers Checker

Analyze and validate HTTP security headers

Secret Scanner

Scan text for exposed API keys and secrets

CSS Gradient Generator

Create beautiful CSS gradients with live preview

Color Palette Generator

Generate harmonious color palettes and schemes

Box Shadow Generator

Generate CSS box-shadow with visual preview

Favicon Generator

Generate favicons in multiple sizes from images

JSON Validator

Validate JSON syntax and structure

JSON Diff

Compare two JSON objects and show differences

JWT Token Generator

Generate signed JWT tokens with custom payload

API Key Generator

Generate secure random API keys

HTTP Request Builder

Build and preview HTTP requests visually

cURL to HTTP

Convert cURL commands to HTTP request details

More Utilities

Explore our growing collection of developer tools.

HTML Entity Encoder

Encode and decode HTML entities

URL Parser

Parse URLs into their constituent parts

Hex Converter

Convert text to Hex and vice versa

Binary Converter

Convert text to Binary and vice versa

Base32 Converter

Encode and decode Base32 strings

Base58 Converter

Encode and decode Base58 strings

ASCII Converter

Convert text to ASCII codes

Unicode Converter

Convert text to Unicode escape sequences

Punycode Converter

Convert Unicode to Punycode (IDN)

Rot13 Cipher

Encrypt/decrypt using ROT13 substitution

Morse Code

Translate text to Morse code and back

Quoted-Printable

Encode/decode Quoted-Printable strings

Slug Generator

Generate URL-friendly slugs from strings

SQL Escaper

Escape strings for use in SQL queries

XML Encoder

Encode and decode XML special characters

Timestamp Converter

Convert Unix timestamps to human-readable dates

Line Sorter

Sort lines alphabetically, numerically, or by length

HTML Entity Encoder

Encode and decode HTML entities and special characters

Text Cleaner

Remove extra spaces, line breaks, and whitespace from text

URL Extractor

Extract and list all URLs from text content

Text Reverser

Reverse text, words, or letters with various options

CSV Formatter

Format, validate, and beautify CSV data online

Text Analyzer

Analyze text statistics, readability scores, and word frequency

Text Splitter

Split text by delimiter, character count, or line count

UUID Generator

Generate UUIDs (v4) for your applications

Hash Generator

Generate MD5, SHA-1, SHA-256 hashes

TOTP Generator

Generate Time-based One-Time Passwords for two-factor authentication

Bcrypt Hash Generator

Generate and verify bcrypt password hashes with configurable rounds

Argon2 Hash Generator

Generate Argon2 hashes - modern password hashing standard

RSA Key Generator

Generate RSA public/private key pairs online

PGP Encryption

Encrypt and decrypt messages using PGP/OpenPGP

Text Encryption

Simple password-based text encryption and decryption

SSL Certificate Decoder

Decode and view SSL/TLS certificate details

CSR Generator

Generate Certificate Signing Requests online

Public Key Fingerprint

Calculate SSH key fingerprints (MD5, SHA-256)

Subdomain Enumeration

List common subdomains for security testing

SQL Injection Tester

Test strings for SQL injection vulnerabilities

XSS Payload Generator

Generate XSS test payloads for security testing

CORS Tester

Test and validate CORS configurations

File Hash Calculator

Calculate MD5, SHA-1, SHA-256, SHA-512 file hashes

HMAC Generator

Generate HMAC signatures for API authentication

Checksum Validator

Verify file integrity using checksums

Random Token Generator

Generate cryptographically secure random tokens

Nonce Generator

Generate cryptographic nonces for security protocols

IP Address Analyzer

Analyze IP addresses - IPv4/IPv6 type and details

CIDR Calculator

Calculate IP ranges from CIDR notation

Port Scanner Simulator

Common network ports reference and information

Color Converter

Convert between HEX, RGB, HSL color formats

Lorem Ipsum

Generate placeholder text for your designs

Image to Base64

Convert images to base64 data URI strings

CSS Minifier

Minify and optimize CSS code for production

Flexbox Generator

Visual CSS Flexbox layout generator

Border Radius Generator

Create custom border radius for CSS elements

SVG to Data URI

Convert SVG to data URI for inline CSS/HTML

CSS Triangle Generator

Generate CSS triangles using border tricks

JSON to YAML

Convert JSON to YAML format

YAML to JSON

Convert YAML to JSON format

JSON to XML

Convert JSON to XML format

XML to JSON

Convert XML to JSON format

YAML to XML

Convert YAML to XML format

XML to YAML

Convert XML to YAML format

YAML Validator

Validate YAML syntax and structure

XML Validator

Validate XML syntax and structure

JSON Minifier

Minify JSON by removing whitespace

JSONPath Tester

Test JSONPath expressions on JSON data

JSON Schema Validator

Validate JSON against a JSON Schema

YAML Formatter

Format and beautify YAML files

XML Formatter

Format and beautify XML files

JSON to CSV

Convert JSON arrays to CSV format

CSV to JSON

Convert CSV to JSON format

JSON to TOML

Convert JSON to TOML format

TOML to JSON

Convert TOML to JSON format

XML Beautifier

Advanced XML formatting with options

OAuth 2.0 Helper

Generate auth URLs and PKCE challenges

API Signature Generator

Generate HMAC signatures for API requests

Basic Auth Tool

Encode and decode Basic Authentication credentials

HTTP to cURL

Convert HTTP request details to cURL commands

Postman Parser

Extract requests from Postman collections

Request Logger

Format and beautify HTTP request/response logs

JSON Payload Generator

Generate dummy JSON payloads from templates

GraphQL Formatter

Format and validate GraphQL queries

Webhook Builder

Build webhook payloads for common services

Mock Data Generator

Generate realistic mock API data

HTTP Status Codes

Detailed reference for HTTP status codes

API Response Diff

Compare two API JSON responses

Rate Limit Simulator

Visualize and calculate rate limit windows

API Error Builder

Build standardized API error responses

OpenAPI Validator

Validate OpenAPI/Swagger schema structure

API Docs Generator

Generate markdown documentation from requests

Browse by Category

Encoding/Decoding

15 tools

JSON/YAML/XML

21 tools

API Testing

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Text Utilities

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Security Tools

30 tools

Design Tools

12 tools

Why Developers Love Us

Lightning Fast

Built with Next.js for optimal performance. All tools run locally in your browser, ensuring zero latency.

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Your data never leaves your device. We process everything client-side for maximum security and peace of mind.

Always Free

Open source and free forever. No hidden fees, no subscriptions, just great tools for developers.

Developer Tools Reimagined

Most Popular Tools

JWT Decoder

Base64 Converter

JSON Formatter

URL Encoder

Regex Tester

Case Converter

Word Counter

Text Diff Checker

Find and Replace

Duplicate Line Remover

Markdown Editor

Email Extractor

Password Generator

Password Strength Checker

AES Encryption

SSH Key Generator

Security Headers Checker

Secret Scanner

CSS Gradient Generator

Color Palette Generator

Box Shadow Generator

Favicon Generator

JSON Validator

JSON Diff

JWT Token Generator

API Key Generator

HTTP Request Builder

cURL to HTTP

More Utilities

HTML Entity Encoder

URL Parser

Hex Converter

Binary Converter

Base32 Converter

Base58 Converter

ASCII Converter

Unicode Converter

Punycode Converter

Rot13 Cipher

Morse Code

Quoted-Printable

Slug Generator

SQL Escaper

XML Encoder

Timestamp Converter

Line Sorter

HTML Entity Encoder

Text Cleaner

URL Extractor

Text Reverser

CSV Formatter

Text Analyzer

Text Splitter

UUID Generator

Hash Generator

TOTP Generator

Bcrypt Hash Generator

Argon2 Hash Generator

RSA Key Generator

PGP Encryption

Text Encryption

SSL Certificate Decoder

CSR Generator

Public Key Fingerprint

Subdomain Enumeration

SQL Injection Tester

XSS Payload Generator

CORS Tester

File Hash Calculator

HMAC Generator

Checksum Validator

Random Token Generator

Nonce Generator

IP Address Analyzer

CIDR Calculator

Port Scanner Simulator

Color Converter

Lorem Ipsum

Developer Tools
Reimagined