QuickToolsBox

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Everyday web tools that run in your browser

Format JSON, encode text, compare changes, convert colors and timestamps, inspect JWTs, and more. Tool inputs are processed locally in your browser and are not sent to QuickToolsBox.

Browse 17 toolsRead practical guides

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JSON & Data

JSON FormatterFormat, validate, beautify, or minify JSON data.
Base64 Encode / DecodeEncode text as Base64 or decode an existing value.
URL Encode / DecodeWork with percent-encoded URL components.

Text

Case ConverterConvert text to camelCase, snake_case, title case, and more.
Word CounterCount words, characters, sentences, and reading time.
Lorem Ipsum GeneratorGenerate placeholder copy for layouts and prototypes.
HTML Encode / DecodeEscape special characters or decode HTML entities.
Markdown PreviewWrite Markdown and preview the rendered result.
Regex TesterNewTest regular expressions with live match highlighting.
Diff CheckerNewCompare two blocks of text line by line.

Color & CSS

Color ConverterConvert between HEX, RGB, and HSL color values.
CSS Gradient GeneratorBuild linear and radial gradients with a live preview.

Time & Numbers

Timestamp ConverterConvert Unix timestamps and readable date values.
Unit ConverterConvert length, weight, temperature, volume, and more.

Security Utilities

JWT DecoderInspect JWT headers, payloads, and expiry claims locally.
Password GeneratorCreate random passwords with configurable character sets.
Hash GeneratorGenerate MD5, SHA-1, SHA-256, and SHA-512 digests.

Guides

Understand the result, not just the button

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JSON & Data

How to Format and Validate JSON

Learn how to format, validate, and troubleshoot JSON with practical examples of the syntax errors developers encounter most often.

Updated October 25, 2026 Encoding

Base64 Encoding Explained

Understand what Base64 encoding does, why it increases data size, how to recognize it, and when it should not be used.

Updated October 25, 2026 Web Development

URL Encoding and Percent-Encoding

Learn when URLs need percent-encoding, how spaces and Unicode are represented, and why encoding an entire URL can produce broken links.

Updated October 25, 2026 Time & Dates

Unix Timestamps Explained

Understand Unix time, seconds versus milliseconds, UTC conversion, time zones, and the timestamp mistakes that cause incorrect dates.

Updated October 25, 2026

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Clear explanations

Each tool page explains how the conversion works, shows worked examples, and lists the mistakes people make most often.

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