Tools
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Tool
Drag and Drop Image Optimizer
— Compress and optimize image files by uploading them to this web-based tool that applies adjustable JPEG quality settings to reduce file size. The interface allows users to compare the original and optimized versions side-by-side by toggling between views or pressing and holding the image, while providing real-time compression statistics and the ability to download the optimized file or copy its data URI for embedding in code.
Tool
Render Claude Citations
— Render Claude API responses with proper citation formatting by pasting JSON output into this tool. The tool parses the response structure and displays text content alongside blockquote-formatted citations, making it easy to review how Claude has sourced and attributed information. An embedded iframe renderer safely displays the formatted output with styling that highlights cited passages.
Tool
PHP deserializer
— Convert serialized PHP data to JSON format for easy viewing and manipulation. Paste your PHP serialized string into the input field to automatically parse and display the equivalent JSON output. Use the copy button to quickly transfer the JSON to your clipboard.
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Live region notification demo
— Explore live region notifications with this interactive accessibility demo that allows you to test how screen readers announce dynamic content updates. The page provides instructions for testing with VoiceOver on macOS and iOS, plus interactive controls to trigger notifications with different aria-live settings (assertive or polite) to observe how screen readers prioritize and announce content changes.
Tool
bluesky-resolve
— View and resolve Bluesky handles to their corresponding Decentralized Identifiers (DIDs) using the AT Protocol API. Enter a Bluesky handle in the format `username.bsky.social` to retrieve the associated DID, which serves as a unique identifier for accounts on the Bluesky network. This tool provides a simple interface for looking up handle-to-DID mappings through Bluesky's public resolver endpoint.
Tool
YAML Explorer
— Parse and visualize YAML files in an interactive tree format with collapsible sections for easy navigation of nested data structures. Enter YAML content directly or load from a URL, then explore the data by expanding and collapsing individual elements. The tool preserves your navigation state in the URL, allowing you to share links with specific sections already expanded.
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Word & Character Counter
— Track word and character counts across multiple writing sections with automatic saving to browser storage. Each section displays real-time statistics as you type, and content persists between sessions. Add or remove writing sections as needed to organize different pieces of text.
Tool
OpenAI WebRTC Audio Session
— Establish real-time audio conversations with OpenAI's GPT-4o model using WebRTC technology. This interface allows you to select from multiple voice options and monitors detailed token usage and costs for each interaction and across your entire session. All API tokens are stored locally in your browser for convenience.
Tool
JSON to YAML Converter
— Convert JSON data into multiple YAML formats with a single paste. The tool generates three output variations—block style for readability, flow style for compactness, and quoted strings style for explicit formatting—allowing you to choose the best format for your needs. Each output can be copied to your clipboard with a single click.
Tool
HTML Header Processor
— Process HTML content to automatically generate unique IDs for all header elements and create a table of contents with anchor links. This tool is useful for adding navigation functionality to static HTML pages or preparing content for documentation systems that require header identification. Simply paste your HTML and provide the page URL, then the processor will output the modified HTML and a formatted list of clickable header links.
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 packages and compressed files directly in your browser. Enter a PyPI package name or provide a direct URL to a .whl or .zip file to instantly unpack and explore its structure. Click on individual files to view their contents with line numbers, and use the URL fragment to link directly to specific lines within files.
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 upcoming and recent Daylight Saving Time changes for California's Pacific Time zone (PST/PDT). The page automatically detects your timezone and displays when clocks will spring forward or fall back, along with the current DST status and helpful reminders about how the time change affects daily routines. Users outside California can still view the information by enabling a pretend mode.
Tool
Token Counter
— Count tokens in your Claude API requests using this web-based token counter tool. Enter a system prompt and user message, optionally attach images or PDF documents, and receive detailed token usage information for billing and optimization purposes. The tool securely stores your API key locally and communicates directly with the Anthropic API to provide accurate token counts for your exact message content.
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.
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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.
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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.
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