Free Online Tools

Browser-based utilities for developers, marketers, and creators. No sign-up required.

Code

JSON Formatter

Validate, format, and beautify JSON data with syntax highlighting and error detection.

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Code

Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 strings back to plain text instantly.

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Code

UUID Generator

Generate random UUIDs (v4) for use in databases, APIs, and application development.

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Code

Regex Tester

Test and debug regular expressions with real-time matching, capture groups, and explanations.

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Design

Color Converter

Convert colors between HEX, RGB, HSL, and other formats with a live preview.

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Content

Lorem Ipsum Generator

Generate placeholder text in paragraphs, sentences, or words for your designs and layouts.

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Code

Hash Generator

Generate MD5, SHA-1, SHA-256, and other cryptographic hashes from any input text.

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Code

URL Encoder / Decoder

Encode or decode URLs and query parameters for safe use in web applications.

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Design

Contrast Ratio Checker

Test foreground and background color combinations against WCAG 2.1 AA and AAA accessibility guidelines.

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Marketing

UTM Link Builder

Generate campaign URLs with UTM parameters for tracking marketing campaigns in Google Analytics.

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Content

Word & Character Counter

Count words, characters, sentences, and paragraphs with reading and speaking time estimates.

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Marketing

QR Code Tools

Generate and decode QR codes. Create from text or decode from images. Download as PNG or SVG.

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Marketing

OG / Meta Tag Generator

Create Open Graph tags, Twitter cards, and standard meta tags for beautiful social sharing previews.

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Content

Markdown to HTML

Convert Markdown syntax to clean HTML with a live rendered preview.

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Content

CSV to JSON

Convert CSV data to JSON arrays or objects with automatic header detection and configurable delimiters.

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Content

Slug Generator

Convert titles and text into clean, URL-friendly slugs with customizable separators and transliteration.

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Code

Timestamp Converter

Convert between Unix timestamps, ISO 8601, and human-readable dates with relative time and calendar details.

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Marketing

ROI / Markup Calculator

Calculate return on investment, markup percentage, and profit margin with instant results.

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Code

SQL Formatter

Format and beautify SQL queries in real-time with support for PostgreSQL, MySQL, T-SQL, and more.

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