toolkit

How It Works

Visual step-by-step guides to complex engineering systems.

How Internet Works

Global Journey

How HTTPS Works

TLS Handshake

How DNS Works

Resolution Flow

How Git Works

Objects & Internals

How OAuth 2.0 Works

Auth Flows & Tokens

K8s Pod Creation

Lifecycle of a Pod

Load Balancing

Algorithms & Failover

DB Transactions

ACID & Consistency

How Kafka Works

Distributed Streaming

View All Guides

30+ Visual Explainers

Simulators

View All 34

Interactive visualizations for learning distributed systems, algorithms, and computer science concepts.

Circuit Breaker

Resilience pattern visualizer

Isolation Levels

Transaction anomalies visualizer

CAP Theorem

Visualize distributed trade-offs

Queue & Stack Simulator

FIFO vs LIFO with visual sub-types

Linked List Simulator

Visualize Singly, Doubly & Circular lists

Sorting Visualizer

Bubble, Quick, Merge & more

Binary Search

Visualizing Search Patterns

Dijkstra Pathfinding

Shortest path on a grid

RAFT Consensus

Leader election & replication

TCP Handshake

3-way handshake & retransmission

Data Tools

View All 11

Format, validate, and transform JSON, YAML, Base64, and more. All tools run locally in your browser for maximum privacy.

JSON Formatter

Format and beautify JSON

JSON Validator

Validate JSON syntax

YAML ↔ JSON

Convert between formats

Text Diff

Compare text differences

Markdown ↔ HTML

Convert Markdown and HTML

JSON to Go

Generate Go Structs

CSV ↔ JSON

Convert CSV and JSON

JSONPath Extractor

Query JSON with JSONPath

JSON Diff

Compare JSON objects

SQL Formatter

Format SQL queries

Encoders & Converters

Base64 Encoder

Encode text to Base64

Base64 Decoder

Decode Base64 to text

Protobuf Converter

Convert to Go, Python, Java, TS, Rust

Protobuf → JSON

Convert Protobuf

URL Encoder

Encode & decode URLs

Developer Tools

Essential utilities for software developers: UUIDs, regex testing, JWT encoding/decoding, timestamp conversion, and more.

UUID Generator

Generate unique IDs

Hash Generator

Create MD5, SHA hashes

Regex Tester

Test regular expressions

JWT Decoder

Decode and verify JWT tokens

Cron Parser

Parse cron expressions

cURL Builder

Build cURL commands visually

Chmod Calculator

Unix permissions

Timestamp Converter

Convert Unix timestamps

Mock API Dashboard

Simulate REST endpoints

Git Diff Parser

Visualize git diffs

Security Tools

Generate cryptographically secure passwords and manage security-related operations.

Password Generator

Secure random passwords

Network Tools

DNS lookups, IP geolocation, CIDR calculations, HTTP header inspection, and WHOIS queries.

DNS Lookup

Query DNS records

IP Lookup

Get IP information

CIDR Calculator

Subnet calculator

HTTP Headers

Inspect response headers

HTTP Status

Status code reference

WHOIS Lookup

Domain registration info

WebSocket Tester

Debug WebSocket connections

Kubernetes

Tools for Kubernetes deployment: probe generators, resource calculators, and rollout simulators.

K8s Probe Generator

Generate liveness/readiness probes

Resource Calculator

CPU/Memory requests & limits

Pod Eviction Sim

Simulate pod eviction

Rollout Visualizer

Visualize deployments

Design

Color pickers, gradient generators, and contrast checkers for designers and developers.

Color Tools

Color picker and converter

Gradient Generator

Create CSS gradients

Shadow Generator

Design box shadows

Typography Scale

Calculate type scales

Border Radius

Visual border radius tool