Visualize view and projection matrices from the comfort of your browser

A sleek, lightweight browser tool to format and visualize FHIR JSON responses. Paste raw data, click “Format JSON,” and instantly view a clean, color-coded, easy-to-read output. Includes error navigation, resource filtering, copy-to-clipboard, and a built-in legend for quick interpretation.

🛠️ Ethereum key explorer and message signing tool. Paste a private key to get the public key, Keccak-256 hash, and address. Works entirely offline in your browser.

CryptoLock 是一个完全在浏览器中运行的本地加密/解密和文件校验工具套件。所有操作都在本地执行，不上传任何数据到服务器，确保您的数据安全。

🫵 Where are you in the FEFU admission table?

Chrome extension to give fast frequency data of Japanese words found in the current opened tab.

Browserbasiertes Sicherheitstool

Translate selected text instantly using Ctrl+L. Supports all languages and automatically detects the selected language, translating it into your browser's default language. Simple, fast, and efficient.

A simple web-based code runner

Generate stereograms online - Drag and drop depthmap and texture to make magic eye images online. Allows you to make autostereograms in your browser for free. Made by lavaboosted with p5js.

A privacy-focused, client-side web application for converting YouTube URLs to embed format with a terminal-inspired interface.

A powerful browser-based tool for creating custom CSS icon systems using Unicode emojis. Generate production-ready CSS with live preview, search, filtering, and export/import functionality.

iFrame Inspector for authorized security testing and controlled target interaction, enabling iframe analysis, logging, interface manipulation, and detection tuning within ethical red-team assessments and research.

Browser tool for generating color by numbers pixel math worksheets for addition and subtraction practice.

Offline WebP → JPG browser demo. 100% client-side, no uploads, privacy-first.

Validate FHIR resources directly in your browser. This open-source tool checks required fields, highlights missing elements, and flags invalid values for common resource types—all without server dependencies. Ideal for quick diagnostics, learning FHIR structure, or validating profiles securely.

🧰 A collection of simple JavaScript tools that can be run directly in the browser.

Converts an image to pixel art. Set the number of pixels and click individual pixels to edit the color sampled from the original image within each square.

Free, instant online screen capture tool