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Free Online Tools

Powerful, privacy-first tools that run entirely in your browser. No registration required.

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Developer Tools

Base64 Converter

Encode text to Base64 or decode Base64 strings instantly.

Hash Generator

Generate cryptographic hashes (MD5, SHA-1, SHA-256, SHA-512) from text or files instantly.

JSON Formatter & Converter

Format, validate, and minify your JSON data easily.

JSON TOON Converter

Convert between JSON and TOON formats. TOON reduces token usage in LLM applications by 30-60% while maintaining data integrity.

JWT Decoder

Decode and inspect JSON Web Tokens — header, payload and claims.

QR Code Generator

Generate QR codes for URLs, text, or any data instantly.

Regex Tester

Test and debug regular expressions against sample text with live match highlighting.

Timestamp Converter

Convert Unix timestamps to human-readable dates and back, in your local time and UTC.

URL Converter

Encode URLs or decode URL-encoded strings.

UUID Generator

Generate cryptographically-random UUID v4 (GUID) identifiers — single or bulk.

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Text Tools

Diff Checker

Compare two blocks of text and highlight the differences line by line.

Lorem Ipsum Generator

Generate placeholder Lorem Ipsum text in paragraphs, words, sentences, or lists.

Markdown Previewer

Write Markdown and see a live, sanitized HTML preview side by side.

Text Case Converter

Convert text between uppercase, lowercase, title case, and sentence case instantly.

Word Counter

Free online word counter tool. Count words, characters, sentences, paragraphs, and get detailed text statistics instantly.

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Media Tools

Color Picker & Converter

Pick colors and convert between RGB, HEX, and HSL formats instantly.

Image Converter

Convert images between JPG, PNG, and WebP formats. Free online image format converter. No file size limits, no registration required.

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Security Tools

One-Time Secret Sharing

Share a password, API key, or private note through a one-time link that self-destructs after it is read. Encrypted in your browser — we can never see it. Free, no sign-up.

Password Generator

Generate strong, secure passwords instantly. Create random passwords with customizable length and character types. Free and secure.

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Data Tools

Excel to CSV/JSON Converter

Convert Excel files to CSV or JSON format. Free online Excel converter tool. No file size limits.