Tools
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Tool
Writing Style Analyzer
— Analyze your writing for common style issues by pasting text into this tool, which detects weasel words (such as "very" and "quite"), passive voice constructions, and duplicate consecutive words. The analyzer provides contextual snippets for each issue found, helping you identify areas where your writing could be more direct and concise. This tool is adapted from shell scripts by Matt Might and updates results in real-time as you type.
Tool
Social Media Card Cropper
— Crop and customize images for social media platforms with precise control over composition and framing. This tool supports multiple popular aspect ratios including Twitter/LinkedIn (2:1), Facebook (1.91:1), Substack (1.4:1), and Instagram (1:1), with an intelligent background color detection system that automatically matches the image's edge tones.
Tool
Prompts.js
— Prompts.js is a lightweight JavaScript library that provides modal dialog functionality for creating alert, confirm, and prompt interactions in web applications. The library enables developers to display user-facing dialogs with async/await syntax, making it easy to handle user responses in a clean, readable manner. This demo page allows you to test the three core dialog types and view the results of user interactions.
Tool
Timestamp Converter
— Convert Unix timestamps to human-readable dates and times with this tool. Enter a Unix timestamp (in seconds or milliseconds) to instantly view the corresponding date and time in both UTC and your local timezone. The converter automatically handles both 10-digit and 13-digit timestamps, making it easy to work with timestamps from various sources and systems.
Tool
Bluesky Timeline Viewer
— View Bluesky social media timelines by authenticating with your account credentials and retrieving live feed data. The application automatically refreshes your timeline at regular intervals while displaying posts with author information, timestamps, and full JSON response data for advanced inspection. Credentials are securely stored locally in your browser for convenient access during future sessions.
Tool
Bluesky WebSocket Feed Monitor
— Monitor real-time Bluesky feed data by connecting to the Bluesky Jetstream WebSocket service and viewing incoming posts and events. Send custom JSON messages to filter the feed by collection type, specific user DIDs, or other parameters, with all activity logged in the output panel for debugging and inspection. Use the provided keyboard shortcut (Ctrl/Cmd + Enter) to quickly send configuration updates to the WebSocket connection.
Tool
Package File Browser
— Browse and view the contents of Python package files (.whl and .zip archives) directly in your browser by entering a PyPI package name or a direct file URL. The tool automatically downloads the package, extracts all files, and displays them in an interactive list with syntax highlighting and line-by-line navigation. You can link directly to specific files and lines using URL fragments for easy sharing.
Tool
BBox Tool - CropperJS Version
— Draw bounding boxes on images using an interactive cropping tool powered by CropperJS. Load an image by pasting, dragging and dropping, or selecting a file, then click and drag to create a box around your region of interest. The tool automatically outputs normalized coordinates as percentages of the image dimensions in a format ready for command-line use.
Tool
mdn-timelines
— View Mozilla's browser compatibility data to track when web APIs were first supported across different browsers. Search for any API by name to see a chronological timeline of support additions, including release dates and version numbers for each browser. The interface also displays relevant MDN documentation links, specification URLs, and status indicators to help developers understand the maturity and adoption timeline of web platform features.
Tool
iframe sandbox
— Test and explore HTML, CSS, and JavaScript code in a sandboxed iframe environment with configurable security restrictions. The left panel provides a code editor for writing HTML content, while the right panel displays a live preview with customizable sandbox attributes that control what the iframe can access and execute.
Tool
animated-rainbow-border
— Display an animated rainbow gradient border effect around a centered box with interactive controls. The page features a dark theme with a glowing, color-shifting border that can be toggled on and off using the provided button. The animation combines gradient shifting and pulsing effects to create a dynamic, eye-catching visual presentation.
Tool
California Clock Change - PST/PDT Only
— Track California's Daylight Saving Time changes with this tool that displays the most recent clock adjustment and alerts you to the next one. The page automatically detects your timezone and restricts functionality to Pacific Time users, while offering detailed information about when clocks spring forward or fall back, along with a note about how the change might affect your dog's internal schedule. An embedded test suite verifies the accuracy of DST date calculations for multiple years.
Tool
Token Counter
— Compare token counts across multiple Claude models by entering text and optional files. This tool supports system prompts, user messages, and file attachments (images and PDFs) to help you understand how different Claude models tokenize your content. Your API key is stored locally in your browser and used only to call the Anthropic token counting API.
Tool
Prompt GPT-4o audio
— Interact with OpenAI's GPT-4o audio models to generate spoken responses to your prompts with customizable system instructions and voice selection. The application processes your input through the OpenAI API, retrieves the generated audio and transcript, and provides playback controls along with the full API response data. You can save responses as GitHub Gists and download the audio files for offline use.
Tool
Gist Audio Player
— Play audio responses generated by OpenAI's GPT-4 with audio preview model by providing a GitHub Gist URL containing the API response JSON. The player extracts base64-encoded WAV audio data from the Gist, converts it to playable format, and displays the associated transcript. You can listen to the audio directly in the browser or download it as a WAV file.
Tool
link-temp
— View Mozilla Bugzilla bug reports directly from your terminal using this LLM plugin for Google's Gemini API. The plugin enables seamless integration between your command-line workflow and Bugzilla's bug tracking system, allowing you to query and retrieve bug information without leaving your terminal environment. This tool is particularly useful for developers who want to incorporate bug data into their LLM-powered workflows and automation scripts.
Tool
SVG Base64 Embedding Demo
— Embed SVG images directly into HTML using base64 data URIs, which eliminates the need for separate image files and reduces HTTP requests. This demo showcases three different SVG examples encoded in base64 format and displayed through standard image tags, with included JavaScript that safely decodes and displays the underlying SVG source code.
Tool
Progressively render SVG
— View SVG content being progressively rendered character by character over a specified duration. Paste an SVG file into the input field, set the animation duration in seconds, and click Render to watch the image draw itself incrementally while the live editor displays the growing SVG code. The tool automatically completes partial SVG markup to ensure valid rendering at each animation step.
Tool
Clipboard Format Viewer
— Inspect and analyze clipboard data by pasting content into this viewer to see all available formats and their corresponding values. The tool displays text, HTML, images, and file information in an organized format, with special handling for image previews and multi-file pastes. This is useful for debugging clipboard operations and understanding what data formats are available when copying and pasting content across applications.
Tool
ARES Phonetic Alphabet Converter
— Convert text to NATO phonetic alphabet equivalents for clear communication in radio, military, and aviation contexts. Enter any combination of letters and numbers, then click the convert button to display the phonetic representation with each character separated by spaces. Spaces in the original text are marked as "(SPACE)" in the output.
Tool
Navigation Bar with Text-Wrap Balance
— Explore how the CSS `text-wrap: balance` property affects navigation layout and text distribution across multiple lines. This interactive demonstration allows you to toggle the text-wrap balance feature on and off while adjusting the number of visible navigation items to see how the browser distributes text more evenly across lines. Use the slider and checkbox controls to observe the differences in how links wrap and align within the constrained navigation container.
Tool
HTML Entity Escaper
— Convert between special characters and their HTML entity representations with this bidirectional encoding tool. Select between Escape mode to convert characters like `<`, `>`, `&`, and quotes into their corresponding HTML entities, or Unescape mode to decode HTML entities back into readable characters. The tool supports named entities, decimal numeric references, and hexadecimal numeric references, with real-time conversion displayed in the output field.
Tool
QR Code Decoder
— Decode QR codes from images or your device's camera with this interactive web application. Upload an image by dragging and dropping, clicking to select a file, or pasting from your clipboard, and the decoder will extract the encoded data instantly. Switch to webcam mode for real-time scanning with support for multiple cameras and pinch-to-zoom functionality on touch devices.
Tool
OpenAI Audio
— Record audio through your microphone and send it to OpenAI's GPT-4o audio model along with a text prompt to receive AI-generated responses. The tool converts your recorded audio to WAV format, calculates token usage and associated costs for both text and audio inputs, and displays the API response in both formatted and raw JSON views. Your API key is securely stored locally in your browser, and you can download the recorded audio file for later use.
Tool
Extract URLs
— Extract URLs from copied web page content by pasting HTML into the input area, which automatically identifies and displays all hyperlinks found in the pasted material. The tool filters for valid HTTP links and provides a consolidated list in the output textarea, making it easy to copy all extracted URLs to your clipboard with a single button click.
Tool
Pelican Sightings Query Tool
— Query pelican sighting records from Half Moon Bay using SQL commands against an in-browser SQLite database. The tool loads sample data containing observations of various pelican species across local beaches with dates, locations, and counts. Enter any valid SQL query in the textarea and execute it to retrieve and view the results in a formatted table.
Tool
Jina Reader
— Convert web pages to structured content using the Jina Reader API, with support for multiple output formats including markdown, HTML, and text. The interface allows you to fetch and preview page content while optionally running AI-powered analysis through Claude to generate summaries, extract quotes, and identify key ideas from the retrieved material.
Tool
Improved Interactive CSS Grid Layout with Symmetric Animation
— Explore an interactive CSS grid layout that demonstrates dynamic element expansion with smooth animations. Click the green cell labeled "1x2" to trigger a symmetric animation that expands the element to fill the entire grid container, then click again to animate it back to its original position. The layout combines CSS Grid positioning with JavaScript event handling to create a polished visual effect that smoothly transitions between states.
Tool
Event Planner
— Plan events with timezone-aware scheduling and countdown tracking. This application allows you to input event details including title, description, location, date, and time across different US timezones, then automatically calculates the time remaining until the event and generates a shareable Google Calendar link. The tool displays all event information in a formatted summary and provides a convenient way to add the event directly to your Google Calendar account.
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