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API Mock Server

API Rate Limit Tester

API Response Diff Checker

API Tester

Basic Auth Generator

cURL Command Converter

GraphQL Explorer

HTTP Header Analyzer

HTTP Status Codes

JWT Decoder

MIME Types Reference

OAuth Playground

OpenAI JSON Validator

OpenAPI/Swagger <-> Postman Converter

Prompt Formatter

REST API Builder

Token Estimator

Webhook Monitor

Webhook Tester
Browser & Device

Benchmark Builder

Browser Feature Detection

Keycode Info

Screen Resolution Checker

Viewport Simulator
Cloud

.env <-> JSON/YAML Converter

.tfvars Generator

ARN Parser / Builder

Chmod Calculator

Cloud Region Reference

Cron Expression Builder

Docker Compose Generator

Docker Run to Compose Converter

Dockerfile Generator

DynamoDB JSON Converter

Environment Variable Manager

IAM Policy Generator

Kubernetes YAML Generator

Lambda Event Payload Generator

Nginx Config Generator

S3 URL Parser

Terraform HCL Formatter

Uptime Monitor

User Agent Parser

VPC Subnet Planner
Color Tools

CMYK <-> RGB Converter

Color Name <-> HEX Converter

Color Picker

Contrast Checker

HEX <-> RGB Converter

Material Color Palette

Random Color Generator

RGB <-> HSL Converter

RGB <-> HSV/HSB Converter

Tailwind Color Picker
Database Tools

CSV to SQL

Database Schema Visualizer

ER Diagram Generator

Mongo Query Formatter

MongoDB Query Builder

PostgreSQL Explain Visualizer

SQL Beautifier

SQL Diff Tool

SQL Formatter

SQL Query Analyzer

SQL to JSON
Encoding Tools

ASCII Converter

Base32 Encode/Decode

Base58 Encode/Decode

Base64 <-> Hex Converter

Binary Converter

File to Base64 Converter

Hex Converter

Query String <-> JSON Converter

Unicode Converter

URL Encoder/Decoder
Fake Data Generators

Credit Card Test Numbers

Fake Address Generator

Fake Phone Generator

Fake User Generator

Test Email Generator
Frontend Tools

Color Palette Generator

CSS Animation Generator

CSS Beautifier / Minifier

CSS Gradient Generator

CSS Unit Converter

Favicon Generator

Font Converter (TTF/OTF <-> WOFF)

Glassmorphism Generator

HTML Diff Tool

HTML Entity Encoder/Decoder

HTML Formatter / Beautifier

HTML Table Generator

Markdown <-> HTML Converter

Meta Tags Generator

Neumorphism Generator

Shadow Generator

SVG Optimizer

Tailwind Builder
Git Tools

.gitignore Generator

Branch Cleaner

Changelog Generator

Git Cheat Sheet

Git Commit Generator

Merge Conflict Helper

Release Notes Generator
Image Tools

Image <-> Base64

Image Compressor

Image Cropper

Image Resizer

PNG <-> JPG <-> WebP Converter

SVG Placeholder Generator

SVG to PNG/JPG Converter

SVG Viewer
JSON/XML/YAML

CSV <-> JSON Converter

CSV <-> XLSX Converter

Firestore Rules Formatter

Java .properties <-> JSON/YAML Converter

JSON Compare

JSON Formatter & Validator

JSON Path Tester

JSON Schema Builder

JSON to XML Converter

TOML Converter

TOML Formatter

XML Formatter

XML to JSON Converter

YAML <-> JSON Converter

YAML Validator
Log & Debugging

Crash Report Analyzer

Error Screenshot Annotator

Log Analyzer

Log Viewer

Stack Trace Formatter
Mobile Development

APK Contents Inspector

App Icon Generator

App Privacy Policy Generator

App Release Notes Generator

App Store Keyword Analyzer

App Store Metadata Generator

ASO Keyword Finder

Entitlement Generator

Firebase JSON Validator

Info.plist Generator

Localization Manager

Push Notification Payload Builder
Network Tools

Binary Calculator

Bitwise Calculator

Chronometer

CIDR Calculator

Duration Converter

ETA Calculator

Hex Calculator

IPv4 <-> IPv6/Decimal Converter

IPv4 Range Expander

IPv6 ULA Generator

MAC Address Generator

MAC Address Lookup

My IP

Network Speed Calculator

Percentage Calculator

Random Port Generator

Storage Calculator

Temperature Converter

WHOIS Lookup
QR & Barcodes

Barcode Generator

QR Code Generator
Security

Base64 Encode/Decode

Bcrypt

BIP39 Passphrase Generator

CORS Tester

Encryption Toolkit

Hash Generator

Hmac Generator

IBAN Validator and Parser

OTP Code Generator

Password Generator

Password Strength Analyser

Random Key Generator

SSL Expiry Monitor

String Obfuscator

Token Generator

ULID Generator

UUID Generator
SEO Tools

Canonical URL Generator

hreflang Generator

Robots.txt Generator

Schema.org / JSON-LD Generator

Sitemap Generator
Text Tools

ASCII Art Text Generator

Case Converter

Duplicate Line Remover

Email Normalizer

Emoji Picker

Find & Replace

List Converter

Lorem Ipsum Generator

Math Evaluator

Numeronym Generator

Phone Parser and Formatter

Random Text Generator

Regex Cheatsheet

Regex Tester

Remove Blank Lines

Roman Numeral Converter

Shuffle Lines

Slug Generator

Sort Lines

Text Diff Checker

Text to NATO Alphabet

Word Counter
URL Tools

App Store Link Generator

Deep Link Generator

Email / Mailto Link Generator

Google Play Link Generator

Outlook Safelink Decoder

SMS Link Generator

Timestamp Converter

URL Expander

URL Parser

URL Shortener

WhatsApp Link Generator
Browse all tools 221 tools available

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VPC Subnet Planner

VPC Subnet Planner

Carves a VPC CIDR range into a set of equally-sized, non-overlapping subnets — pure IPv4 math, same technique as the CIDR Calculator.

VPC CIDR

Subnet size (prefix)

Number of subnets