QuickTool: Fast Online Tools
Fast Online Tools for Productivity
QuickTool is a fast and simple online toolbox for developers and creators. It provides a growing collection of lightweight tools that work instantly in the browser.
Tool directory
Base Converter
Convert numbers between bases 2–36
Base64 Decoder
Decode Base64 strings
Base64 Encoder
Encode text to Base64
Binary to Text
Convert 8‑bit binary to text
Bytes Converter
Convert between B, KB, MB, GB, TB
Case Converter
Convert text case (upper, lower, snake, etc.)
Character Counter
Count characters including/excluding spaces
Contrast Checker
Check contrast ratio and WCAG levels
Cron Generator
Compose 5-field cron expressions
Cron Parser
Explain 5-field cron expressions
CSS Formatter
Pretty‑print CSS with basic indentation
CSS Minifier
Minify CSS by removing comments and spaces
CSV to JSON
Convert CSV rows to JSON
Duplicate Line Remover
Remove duplicate lines from text
HEX to RGB
Convert hex color codes to RGB/A
HSL Converter
Convert between HSL and RGB
HTML Decoder
Decode HTML entities to text
HTML Encoder
Escape HTML special characters to entities
HTML Formatter
Pretty‑print HTML (basic)
HTML Minifier
Minify HTML by removing comments and spaces
HTTP Header Parser
Parse raw HTTP headers into a list
JS Formatter
Pretty‑print JavaScript (basic)
JS Minifier
Minify JavaScript (naïve) for quick use
JSON Diff
Compare two JSON documents
Why QuickTool Helps You Ship Faster
Consistent UI, fast workflows, and privacy by default.
QuickTool unifies essential JSON utilities, practical text helpers, and targeted web/dev tools—plus encoding, color, and data converters.
- Format, minify, diff, and validate JSON for quick debugging.
- Encode/decode URLs, Base64, HTML, and Unicode safely.
- Parse URLs, headers, and user‑agents with clear, actionable output.
Popular Starting Points
Jump into commonly used tools.
- JSON Viewer — inspect and navigate large JSON documents.
- URL Parser — inspect components and query params.
- Contrast Checker — check AA/AAA contrast quickly.