Developer Utility Suite

All the small dev tools
you keep rebuilding, in one clean workspace.

Fast, browser-only utilities for formatting, decoding, visualizing CS concepts, and building web assets. No uploads, no sign-ups, no distractions.

⌘K

Popular:

Browser-onlyNo sign-upInstant resultsWorks offline (PWA)Non-intrusive ads

Popular tools

All tools (49+)

JSON Formatter & Validator

Format, validate, and minify JSON data instantly.

JWT Decoder

Decode and inspect JWT tokens securely.

Base64 Encoder / Decoder

Encode or decode Base64 strings instantly.

RegEx Tester

Test and debug regular expressions live.

CSS Grid Generator

Design custom responsive CSS grid layouts.

UUID Generator

Generate secure bulk v1, v4, and v7 UUIDs.

Hash Generator

Create secure MD5, SHA-256, and SHA-512 hashes.

CSV to JSON Converter

Convert CSV sheets to structured JSON arrays.

CSS Gradient Generator

Create custom linear and radial CSS gradients.

Browse by category

All categories (9)

Data Formatting

3 tools

Encoding & Decoding

3 tools

Text Tools & Utilities

5 tools

RegEx Tools

1 tool

File & Code Converters

16 tools

UI & CSS Generators

6 tools

Hashing & Security

6 tools

Image Tools

2 tools

Interactive Builders

Generate Projects, Extensions & READMEs

Visually assemble web extensions, repository documentations, and PWA manifest asset bundles.

Explore all (4)

Website to Extension

Convert any website URL to a Chrome Extension.

#web#development

GitHub README Builder

Visually construct high-quality repository READMEs.

GitHub Profile README Builder

Design custom GitHub Profile READMEs.

#github#profile

PWA Manifest & Asset Generator

Generate compliant PWA manifest JSON files and resized icon asset bundles.

#pwa#development

Explore all builders (4)

Interactive Visualizers

Master Computer Science & Version Control Visually

Step through real-time operational animations for data structures, algorithms, Big O complexity, and Git branch workflows.

All topics (53+)

50+ Interactive Topics

Data Structures & Algorithms

Visualize step-by-step element manipulations across Arrays, Stacks, Queues, Binary Trees, Graphs, Sorting, Searching, and Asymptotic Big-O space/time boundaries.

#Arrays & Matrices#Stack & Queue#Sorting & Search#Trees & Graphs#Big O Complexity

Explore DSA Visualizers

Interactive Simulator

Git & Version Control Workflows

Master non-linear Git commit graphs, branch creations, 3-way merges, rebasing, detached HEAD states, and cherry-picking with an interactive CLI tree simulator.

#Branch Trees#Fast-Forward Merge#Interactive Rebase#Cherry-Pick#Head Pointers

Launch Git Visualizer

Explore all topics (53+)

DSA & Coding Patterns

Master Algorithmic Logic & Coding Interviews

Deep-dive multi-approach breakdowns, underlying mental models, asymptotic Big-O bounds, and clean code across 5 languages.

All problems (31)

EasySliding Window

Best Time to Buy and Sell Stock

Determine the maximum single-transaction profit from daily stock prices. A classic demonstration of how tracking a running minimum transforms an O(n²) pair search into an O(n) single pass.

Time: O(n)•Space: O(1)

Python · Java · C++ · JSSolve Problem

EasyArrays & Hashing

Two Sum

Find the two numbers in an array that sum up to a target value. The quintessential problem for learning how to trade memory for speed using a Hash Map.

Time: O(n)•Space: O(n)

Python · Java · C++ · JSSolve Problem

EasyLinked List

Reverse Linked List

Reverse the directional arrows of a singly linked list in-place. The classic test of reference manipulation and memory pointer management.

Time: O(n)•Space: O(1)

Python · Java · C++ · JSSolve Problem

Valid Parentheses

Verify that code brackets (), {}, and [] are properly closed and nested in order. This is the exact algorithm compilers, linters, and IDEs use to detect syntax errors in real-time.

Time: O(n)•Space: O(n)

Python · Java · C++ · JSSolve Problem

EasyBinary Search

Binary Search

Locate a target value in a sorted array in O(log n) logarithmic time. Like opening a dictionary in the middle, each comparison eliminates half the remaining items.

Time: O(log n)•Space: O(1)

Python · Java · C++ · JSSolve Problem

EasyDynamic Programming

Climbing Stairs

Count the distinct ways to reach the top of an n-step staircase when hopping 1 or 2 steps at a time. The premier gentle introduction to Dynamic Programming and state transition.

Time: O(n)•Space: O(1)

Python · Java · C++ · JSSolve Problem

Explore all DSA problems (31)

Interactive Playground

Coding Speed, Reflexes & Trivia Arenas

Benchmark your WPM, train muscle memory, solve JS coercion gotchas, and test keystroke reflexes.

Typing Speed Evaluation

Benchmark your typing speed, accuracy, and telemetry in real time.

#typing#learning

Guided Typing Practice

Build deep muscle memory with code-focused typing drills.

#typing#learning

Dev Reaction Time Test

Test your developer stimulus reaction time in milliseconds.

#reaction#reflex

JS Trivia Output Sprint

Master JS weirdness, coercion, and hoisting gotchas in 60s.

#javascript#trivia

CSS Speed-Recreate Challenge

Recreate target CSS designs under the timer and compare match %.

Explore all arenas (5)

49+Developer Tools

4Project Builders

53+Visualizer Topics

31+DSA Problems

100%Browser-Based

PWAWorks Offline

About

Why We Built ToolMight

As developers, we constantly paste sensitive data—API keys, JWT tokens, JSON payloads, config files—into random online tools. Most of them silently upload your input to remote servers. That's a real security risk.

Every tool, builder, and visualizer on ToolMight runs 100% inside your browser. Nothing is uploaded, logged, or transmitted. It's as private as running software on your own machine.

Is my data secure?

All processing runs locally via client-side JavaScript. No server, database, or cloud service ever sees your input—not even ToolMight's.

Does it work offline?

Yes. ToolMight is a PWA. Once loaded, the entire suite is cached in your browser and works without an internet connection.

Why is it free?

No backend servers means near-zero operating costs. We cover them with non-intrusive ads and pass the savings to you.

Are my settings saved?

Yes. Editor themes, layout preferences, and slider positions persist in localStorage across sessions with no account required.

Explore 49+ tools, 4 builders, 53+ visualizers & 31+ DSA problems

New tools and interactive modules added regularly — 100% free, client-side, and private.

Browse full suite