NewPopular
Nanosecond Timer
High-precision online stopwatch with nanosecond accuracy. Lap times, split times, and copy results.
Developer Tools
Developer Tools
19 tools available
Utilities for developers — JSON formatters, encoders, regex testers, and more.
New
AI IDE Rules (.cursorrules) Generator
Create optimized .cursorrules and .clinerules files for Cursor, Windsurf, and Cline.
Developer Tools
New
ASCII Text Art Generator
Convert text to beautiful ASCII text art banners instantly. Customize fonts, characters, spacing, and generate code comment blocks with 100% privacy.
Developer Tools
Base64 Encoder & Decoder
Encode and decode Base64 online. Supports text and files. Free, fast, and private.
Developer Tools
Brand Color Suggestion Tool
Find the perfect color palette for your brand. Answer a few questions about your industry, vibe, and audience to get tailored color schemes with psychology-based explanations.
Developer Tools
New
Bulk URL Opener - Open Multiple Links at Once
Open dozens of URLs in separate tabs with one click. Supports delay between tabs, deduplication, domain grouping, CSV/TXT import, and export. Free, no sign-up.
Developer Tools
New
Code & Text Diff Checker
Compare two code or text files side-by-side. Highlights added, removed, and modified lines in real time. Supports unified view, syntax highlighting, and export.
Developer Tools
Color Contrast Checker
Check contrast ratios between text and background colors to ensure WCAG accessibility compliance.
Developer Tools
New
CSV Column Analyzer
Analyze CSV files locally in your browser. Inspect column stats, missing values, duplicates, and perform clean-up actions with 100% privacy.
Developer Tools
New
cURL to Fetch Converter - Convert cURL to JavaScript
Convert cURL commands to JavaScript fetch() code instantly. Supports headers, request body, auth, cookies, and all common cURL flags. Free, browser-based, no sign-up.
Developer Tools
Image Color Palette Extractor
Extract beautiful color palettes and exact hex codes from any image. View color harmonies, adjust sorting, and export CSS or JSON codes instantly.
Developer Tools
JSON Formatter & Validator
Format, validate, and beautify JSON online. Minify or prettify JSON with syntax highlighting.
Developer Tools
JSON to Zod Schema Generator
Convert JSON objects into TypeScript-ready Zod schemas instantly.
Developer Tools
New
JWT Decoder
Decode and analyze JSON Web Tokens locally in your browser. Inspect headers, payloads, signatures, and claim definitions instantly.
Developer Tools
Mesh Gradient Art Generator
Design beautiful, organic mesh gradient art and wallpapers, sample colors directly from photos, choose custom shapes, and apply noise grain textures.
Developer Tools
New
Schema to LLMs Converter
Convert JSON-LD schemas, HTML documentation, or website details into clean, AI-ready llms.txt markdown formats.
Developer Tools
New
SVG Responsive Optimizer
Optimize SVGs for responsiveness by removing fixed dimensions and adding viewBox support.
Developer Tools
New
Tailwind CSS v4 Color Palette Generator
Generate professional OKLCH color palettes and CSS @theme blocks for Tailwind CSS v4.
Developer Tools
UUID Generator (v4)
Generate random UUIDs (v4) instantly. Bulk generation supported. Free online UUID tool.
Developer Tools