Tools
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Tool
The New Yorker Style Converter
— Convert text to match The New Yorker's distinctive typographic style, featuring proper diaereses (such as "coöperate" and "naïve"), curly quotation marks, em dashes, and ellipses. Paste your text into the input field and watch the refined version appear instantly in the output area, which can be copied to your clipboard with a single click.
Tool
Bluesky Quote Finder
— Search for quote posts on Bluesky by entering a post URL to discover all responses that quote the original post. The tool fetches and displays these quotes with options to sort by likes, recency, or oldest first, and provides direct links to view each quote on Bluesky or explore its thread context. A color-coded depth indicator helps visualize the conversation hierarchy.
Tool
Link Extractor
— Extract hyperlinks from pasted web content and export them in multiple formats including HTML, Markdown, and plain text. The tool automatically detects and removes duplicate links while displaying each link's title and URL for easy verification. Copy extracted links in your preferred format with a single click.
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Text Diff Tool
— Compare two blocks of text to identify character-level differences between them. This tool uses a dynamic programming algorithm to compute the longest common subsequence and highlights removed text in red and added text in green for easy visualization of changes. The results are displayed character-by-character in a dedicated output section that clearly indicates what was deleted from the original text and what was inserted in the modified version.
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Wikipedia Wikitext Fetcher
— Retrieve the raw wikitext source code from Wikipedia articles by searching for a page title or pasting a direct article URL. The tool features autocomplete suggestions while typing search queries and allows you to easily copy the fetched wikitext to your clipboard for further editing or analysis. URL parameters are preserved, enabling you to share links that automatically load specific Wikipedia articles.
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CORS Fetch Tester
— Test HTTP requests directly from your browser and observe which response headers and body content are accessible under CORS (Cross-Origin Resource Sharing) restrictions. This tool lets you construct requests with custom methods, headers, and body content, import requests from curl commands, and format JSON responses for easier inspection. The application preserves your request configuration in the URL fragment, allowing you to share and bookmark specific test cases.
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XML Well-Formedness Validator
— Check XML documents for well-formedness by pasting content into the input area and clicking the validate button. The tool parses the XML and displays any syntax errors with precise line and column information, highlighting the problematic line in the code view below.
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Emoji Identifier
— Extract and identify all emojis from text by pasting or typing into the input field, and instantly view their names and Unicode codepoint values. The tool uses a comprehensive emoji detection regex pattern combined with a Unicode emoji dataset to recognize a wide variety of emoji characters, including skin tone variants and zero-width joiner sequences. Results are displayed in real-time, showing each unique emoji found along with its standardized name and corresponding Unicode representation.
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Badge Interactive REPL
— Interact with a MicroPython device via the Web Serial API to execute Python commands in real-time through a browser-based REPL interface. This tool enables direct communication with compatible microcontroller boards, allowing users to run Python code, query system information, and manage files without requiring terminal software or drivers. The interface provides quick-access buttons for common operations like listing files, checking CPU frequency, and monitoring available memory.
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GitHub GraphQL Explorer
— Explore GitHub's GraphQL API using an interactive query interface that requires authentication via a personal access token. Enter your GitHub token to connect and start writing, executing, and testing GraphQL queries against GitHub's data in real-time. The explorer provides syntax highlighting, query validation, and response inspection capabilities within an embedded GraphiQL environment.
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GitHub Rate Limit Checker
— Monitor your GitHub API usage and remaining rate limits with this authentication-based checker. After authenticating with your GitHub account, the tool displays detailed information about your API quotas across different resource types, including remaining calls, reset times, and visual progress indicators. The interface shows critical warnings when your limits are running low, helping you manage your API consumption effectively.
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Terminal to HTML
— Convert terminal output into shareable HTML documents with support for colored text formatting. Paste terminal output in RTF, HTML, or plain text format, and the tool instantly generates clean HTML code ready for preview or export. Save your conversions as GitHub Gists for easy sharing and collaboration.
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Query String Stripper
— Remove query parameters and tracking data from URLs with this Query String Stripper tool. Paste any URL to instantly extract the base address by stripping away everything after the question mark, then copy the cleaned result to your clipboard with a single click. This utility is helpful for sharing clean URLs, removing analytics parameters, or simplifying web addresses for documentation purposes.
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OpenAI Prompt Caching Playground
— Explore OpenAI's prompt caching feature by testing different prompt structures and observing cache hit rates across multiple requests. This interactive playground lets you compose system instructions, document context, and user questions, then send them to the Chat Completions or Responses API to track how cached tokens reduce costs and improve performance.
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Text Indentation Tool
— Adjust indentation levels in your text with this tool that offers multiple formatting options. Add or remove spaces from the beginning of each line, strip all leading whitespace, eliminate trailing spaces, and apply or remove quote markers (>) for formatted text. Copy the processed result directly to your clipboard with a single click.
Tool
DOT File Renderer
— Render DOT graph files into visual diagrams directly in your browser. Paste your DOT syntax into the textarea and the graph will automatically render as an SVG visualization, with live updates as you edit. Share your graphs by copying the URL, which encodes your DOT content in the fragment identifier.
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JSON String Extractor
— Extract all strings from JSON data that exceed 20 characters in length or contain line breaks. This tool is useful for identifying longer text content within complex JSON structures for review, localization, or documentation purposes. Simply paste JSON into the textarea to automatically display matching strings along with their object paths, and use the copy button to quickly transfer any string to your clipboard.
Tool
Keyboard Debugger
— Monitor keyboard input in real-time with this interactive keyboard debugger that displays pressed keys and their corresponding key codes. Press any keys on your keyboard to see them appear with visual feedback, including support for simultaneous multi-key presses and special key representations. This tool is useful for testing keyboard functionality, debugging input handling, and understanding key event properties like key name, code, and keyCode values.
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MicroPython Code Executor
— Execute Python code in a sandboxed MicroPython WebAssembly environment with output displayed in real-time. Code is automatically saved to the URL for convenient sharing and persistence, and the environment supports JavaScript interoperability including the `fetch()` API for making HTTP requests. Built-in examples demonstrate common programming patterns from basic operations to working with APIs.
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NumPy Vectors & Matrices — Pyodide Lab
— Execute NumPy vector and matrix operations directly in your browser using an interactive lab powered by Pyodide. Work through five hands-on exercises covering elementwise operations, dot products, matrix multiplication, broadcasting, and indexing, then experiment freely in the playground sandbox with instant Python output.
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GitHub Account Info Lookup
— Look up GitHub user account information by entering a username to retrieve the numeric Account ID and account creation date through the public GitHub API. The tool displays the user's profile link, avatar, and formatted timestamps, along with request latency information. Unauthenticated requests are subject to GitHub's rate limits, which may block further lookups after a certain number of queries.
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AI Adoption Rolling Avg — Pyodide
— View AI adoption trends across different firm sizes by analyzing survey data on artificial intelligence usage in the workplace. This page runs a Python analysis using Pyodide to fetch employment survey data, calculate six-survey rolling averages, and generate an interactive visualization showing adoption rates by company size from November 2023 through August 2025. Download the resulting chart as PNG or SVG for further use or presentation.
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Pyodide Bar Chart Demo (pandas + matplotlib)
— Execute Python code directly in your browser with Pyodide, a WebAssembly-based Python runtime. This demo loads pandas, numpy, and matplotlib in the client to generate a bar chart from sample data and display it as a rendered image—no server required. The first run may take a few seconds as the necessary libraries are downloaded from CDN, but subsequent executions run instantly from your browser's cache.
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Devon Lane Driving Simulator
— Navigate the treacherous single-track lanes of rural Devon in this interactive driving simulator, where you must manage your sanity while encountering cyclists, tractors, caravans, and other obstacles. Each encounter presents a unique challenge requiring a dice roll to succeed, with your choices affecting both your progress and mental state as you attempt to travel increasingly longer distances.
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