DevDockTools

All Tools

60 free browser-based tools. No account, no uploads, no limits.

Image Tools

13 tools

View all →

Developer Tools

23 tools

View all →

JSON Formatter

Format, beautify and minify JSON with syntax highlighting.

Try now →

JSON Validator

Validate JSON syntax with detailed error messages and line numbers.

Try now →

Base64 Encoder/Decoder

Encode and decode Base64 strings and files instantly.

Try now →
New

UUID Generator

Generate cryptographically secure UUIDs (v4) in bulk.

Try now →

Regex Tester

Test and debug regular expressions with live match highlighting.

Try now →

Color Converter

Convert colors between HEX, RGB, HSL, and HSB formats instantly.

Try now →

Hash Generator

Generate SHA-1, SHA-256, SHA-512, and MD5 hashes from text.

Try now →

URL Encoder / Decoder

Encode and decode URL components and query strings.

Try now →
New

JWT Decoder

Decode and inspect JWT tokens — header, payload, and expiry.

Try now →

Password Generator

Generate secure random passwords with custom rules.

Try now →

Timestamp Converter

Convert Unix timestamps to readable dates and vice versa.

Try now →

Word Counter

Count words, characters, sentences, and estimate reading time.

Try now →

Lorem Ipsum Generator

Generate Lorem Ipsum placeholder text for mockups and wireframes.

Try now →
New

Cubic Bezier Editor

Interactive cubic-bezier editor with velocity graph, presets, and code export.

Try now →
New

Spring Physics Playground

Visualize spring animation physics with stiffness, damping, mass, and velocity controls.

Try now →
New

SVG Path Editor

Interactive SVG path editor with draggable anchors, bezier handles, and code export.

Try now →
New

Advanced CSS Clamp Generator

Generate fluid CSS clamp() values with a live viewport simulator and responsive graph.

Try now →
New

React Render Visualizer

Educational React rendering debugger showing rerenders, prop changes, and memoization.

Try now →
New

CSS Grid Visualizer

Interactive CSS Grid playground with drag/drop areas, auto-fit/fill, and minmax visualization.

Try now →
New

Flexbox Engine Visualizer

Visual flexbox simulator showing how the browser distributes space with flex-grow, shrink, and basis.

Try now →
New

Color System Lab

Professional color engineering tool with OKLCH, LAB, interpolation, WCAG contrast, and palette generation.

Try now →
New

Accessibility Toolkit

Color blindness simulator, WCAG contrast analyzer, and semantic HTML accessibility checker.

Try now →
New

Frontend Performance Visualizer

Real-time FPS meter, frame budget analysis, RAF timeline, and render pipeline visualizer.

Try now →

SEO Tools

4 tools

View all →

CSS Tools

5 tools

View all →

AI Tools

15 tools

View all →
New

AI Text Detector & Humanizer

Check if your text reads as AI-generated, then rewrite it into a more natural, human-like version.

Try now →
New

Prompt Optimizer

Analyze and improve your AI prompts for ChatGPT, Claude, Gemini and Perplexity.

Try now →
New

AI Citation Checker

Check how ready a page is to be cited by ChatGPT, Gemini, Perplexity and Google AI Overviews.

Try now →
New

Schema Generator

Generate valid JSON-LD structured data for FAQ, Article, Product, Organization and more.

Try now →
New

Internal Link Generator

Find internal linking opportunities in an article and get suggested anchors and placements.

Try now →
New

Regex Generator

Describe a pattern in plain English and get a working regular expression instantly.

Try now →
New

Regex Explainer

Paste any regular expression and get a clear plain-English explanation of every part.

Try now →
New

SQL Query Generator

Describe your database query in plain English and get valid, optimized SQL.

Try now →
New

Docker Compose Generator

Describe your application stack and get a production-ready docker-compose.yml.

Try now →
New

JSON to TypeScript

Paste any JSON object and instantly get accurate TypeScript interfaces.

Try now →
New

JSON to Zod Schema

Convert any JSON object to a Zod validation schema with proper types.

Try now →
New

API Request Generator

Describe an API call and get ready-to-use fetch, axios, and curl code.

Try now →
New

Error Explainer

Paste any error message and get a clear explanation with a step-by-step fix.

Try now →
New

Meta Description Generator

Generate SEO-optimized meta descriptions from your page title and content summary.

Try now →
New

FAQ Generator

Generate a complete FAQ section for any topic, page, or product.

Try now →