Tools by month

168 tools, grouped by the month they were created.

#December 2025 (23 tools)

cooking-timer (colophon)
Create cooking recipes with detailed step-by-step instructions and automatically track elapsed time and upcoming tasks during meal preparation. Load recipes from URLs or paste JSON directly, save frequently-used recipes for...
pge-outages-hmb (colophon)
Track power outages affecting the Half Moon Bay area with this interactive map displaying real-time PG&E outage data within a 15-mile radius. The application visualizes outage locations as point markers...
microquickjs (colophon)
Execute JavaScript code in a minimal MicroQuickJS sandbox running via WebAssembly, with results displayed for the final expression in your code. Code snippets are automatically saved in the URL hash,...
llm-lib (colophon)
Test llm-lib, a unified JavaScript library that provides a consistent interface for multiple large language model providers including OpenAI, Anthropic Claude, and Google Gemini. Configure your provider credentials and model...
blackened-cauliflower-and-turkish-style-stew (colophon)
Track and manage two simultaneous recipes with this interactive cooking timer that displays the current step, upcoming tasks, and a complete timeline with clock times. The timer persists across browser...
image-print (colophon)
Create custom photo print layouts for A4 pages with adjustable grid configurations, image fitting options, and portrait or landscape orientations. Users can add photos by uploading files or dragging and...
grid-lanes-polyfill (colophon)
Explore the CSS Grid Lanes polyfill, which brings native masonry-style layout capabilities to all browsers through the `display: grid-lanes` property. The demonstration showcases six practical layout patterns including photo galleries,...
json-diff (colophon)
Compare JSON documents side-by-side to identify additions, removals, and modifications between two versions. The tool displays differences with color-coded highlighting and provides character-level detail for string changes, making it easy...
claude-code-timeline (colophon)
View Claude Code session `.jsonl` files as an interactive timeline with customizable filtering and search capabilities. This tool displays events chronologically, extracting conversation messages, tool calls, and file snapshots with...
codex-timeline (colophon)
View Mozilla Codex rollout timeline events by uploading or pasting a JSONL file to explore the sequence of messages, function calls, and system events with interactive filtering and search capabilities....
quickjs (colophon)
Execute JavaScript code in a sandboxed QuickJS environment that runs via WebAssembly, enabling secure and fast script execution directly in the browser. Code is automatically saved to the URL hash,...
is-it-a-bird (colophon)
Determine whether images contain birds using OpenAI's CLIP model running directly in your browser through Transformers.js. Upload images by dragging and dropping, pasting from your clipboard, or selecting files, or...
blog-to-newsletter (colophon)
Create a newsletter from Simon Willison's blog posts, links, and other content by selecting content from the past several days and arranging it in your preferred order. The tool fetches...
clipboard-backup (colophon)
Save and manage clipboard content across multiple formats including text, HTML, RTF, and images with this clipboard backup tool. Paste any content from your clipboard to automatically create a backup...
transparent-png (colophon)
Make Colors Transparent in PNG is an interactive tool that allows you to remove specific colors from images and export the result with transparent backgrounds. Upload or paste an image,...
justhtml (colophon)
Test the JustHTML Python HTML5 parser directly in your browser with this interactive playground. Parse, query, and manipulate HTML using CSS selectors, pretty-print documents, extract text content, and convert HTML...
view-pdf (colophon)
View PDF documents directly in your browser with this lightweight viewer that supports navigation, zooming, and automatic scaling. Load PDFs by entering a URL or passing one via the `?url=`...
bugzilla-bug (colophon)
View Mozilla Bugzilla bug reports with a streamlined interface that displays bug details, comments, and change history in an organized timeline format. Enter a bug ID, URL, or Bugzilla link...
pypi-changelog (colophon)
Track changes across PyPI package versions by entering a package name and viewing detailed diffs between releases. This tool downloads and compares wheel files from PyPI, displaying file-by-file changes with...
bluesky-search (colophon)
Search Bluesky posts using advanced filters and options to organize results by latest or top engagement. This tool requires authentication with your Bluesky account credentials and supports filtering by date...
tacopy-playground (colophon)
Explore how tail-recursive Python functions are transformed into optimized iterative code using the Tacopy library. Enter your recursive function in the input panel to see the automatically generated transformed version,...
notes-to-markdown (colophon)
Convert Apple Notes content to Markdown and HTML formats while preserving hyperlinks and formatting. Paste your notes into the text area to automatically generate both Markdown and HTML outputs, with...
octave-explainer (colophon)
Explore the mathematical and sonic relationship between frequencies through interactive demonstrations and a playable piano keyboard. This educational tool visualizes how an octave represents a 2:1 frequency ratio, allowing you...

#November 2025 (11 tools)

analytics (colophon)
Track your browsing activity and viewing patterns with this personal analytics dashboard that stores all data locally in your browser. The tool displays comprehensive statistics including total visits, unique pages...
omit-needless-words (colophon)
Analyze written text to identify words and phrases that can be removed without changing meaning or grammatical correctness. This tool uses Claude to apply the editing principle "Omit needless words"...
new-yorker-style (colophon)
Convert text to The New Yorker's distinctive typographic style, automatically applying diacritical marks like diaereses (coöperate, naïve), converting straight quotes to curly quotes, replacing hyphens with em dashes, and transforming...
bluesky-quote-finder (colophon)
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...
bluesky-faves (colophon)
View liked posts from any Bluesky user by entering their profile URL, handle, or DID. This application fetches and displays a user's favorite posts with full post details including text,...
link-extractor (colophon)
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...
text-diff (colophon)
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...
wikipedia-wikitext (colophon)
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...
cors-fetch (colophon)
Test HTTP requests directly from your browser and inspect what response data CORS rules allow you to access. This tool lets you configure custom headers, request bodies, and HTTP methods...
xml-validator (colophon)
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...
emoji-identifier (colophon)
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...

#October 2025 (12 tools)

badge-repl (colophon)
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,...
icon-editor (colophon)
Create and edit 24×24 pixel icons with an intuitive browser-based editor featuring a live grid canvas, color picker, and emoji starter templates. Design your icons by clicking pixels directly on...
github-graphiql (colophon)
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...
github-ratelimit (colophon)
Monitor your GitHub API usage with this rate limit checker tool. Authenticate with your GitHub account to view detailed information about your remaining API calls across different resource types, including...
terminal-to-html (colophon)
Convert terminal output into HTML by pasting colored or plain text content into the input field. The tool automatically detects and preserves formatting from RTF (rich text format) terminal output,...
sloccount (colophon)
Count lines of code in software projects by uploading files, pasting code snippets, or analyzing public GitHub repositories using the classic SLOCCount algorithm compiled to WebAssembly. The tool analyzes code...
query-string-stripper (colophon)
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...
deep-research-viewer (colophon)
Analyze and visualize AI deep research transcripts with this interactive viewer that displays the complete research workflow including reasoning steps, web searches, visited pages, and code executions. Load transcripts from...
prompt-caching (colophon)
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...
text-indentation (colophon)
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...
dot (colophon)
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...
json-string-extractor (colophon)
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...

#September 2025 (8 tools)

keyboard-debug (colophon)
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...
micropython (colophon)
Run Python code directly in your browser using MicroPython compiled to WebAssembly. Enter Python code in the editor and click Run to execute it instantly, or use the Tests button...
numpy-pyodide-lab (colophon)
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,...
badge-drawer (colophon)
Draw pixel art for e-ink badge displays with this web-based canvas editor supporting multiple brush sizes, undo/redo functionality, and real-time black-and-white preview. Export your designs as PNG files or transfer...
github-account (colophon)
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...
ai-adoption (colophon)
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...
pyodide-bar-chart (colophon)
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...
devon-lanes (colophon)
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...

#August 2025 (3 tools)

rich-text-to-markdown (colophon)
Convert formatted text from rich text editors or web pages directly into clean Markdown syntax. This tool accepts pasted content with bold, italic, links, lists, and paragraph breaks, then automatically...
hn-comments-for-user (colophon)
Retrieve and view recent comments from a Hacker News user by entering their username and fetching up to 1,000 of their most recent comments. The tool displays each comment with...
percentage-recalculator (colophon)
Calculate and rescale percentage values in real time with this interactive tool. Enter up to four percentages and optionally mark any as ignored to exclude them from the recalculation, which...

#July 2025 (7 tools)

alt-text-extractor (colophon)
Extract alternative text and image URLs from rich text content pasted into this tool. Simply paste content from web pages, and the tool automatically detects embedded images, displays them alongside...
bullish-bearish (colophon)
Learn the difference between bullish and bearish market sentiment through an interactive visual guide featuring animated bull and bear characters. The page uses intuitive animal metaphors—bulls thrust their horns upward...
speech-synthesis (colophon)
Test the Web Speech API's speech synthesis capabilities by entering text and configuring voice parameters such as rate, pitch, and volume. The application provides a selection of available system voices...
open-sauce-2025 (colophon)
Browse the Open Sauce 2025 conference schedule with sessions organized by day, including speaker information, session duration, location, and detailed descriptions. Users can search for specific sessions across all three...
hacker-news-filtered (colophon)
Browse the latest Hacker News stories with customizable content filtering to exclude topics of your choice. Enter comma-separated terms to filter out posts matching those keywords across titles, URLs, and...
ffmpeg-crop (colophon)
Generate FFmpeg crop commands by uploading a video file and interactively defining a crop area using a draggable overlay. The tool provides both standard and iPhone-compatible FFmpeg command formats that...
hacker-news-histogram (colophon)
Analyze Hacker News stories by searching for multiple terms across a custom time range and visualize the results as an interactive histogram. The tool fetches monthly hit counts from the...

#June 2025 (5 tools)

json-to-markdown-transcript (colophon)
Convert JSON transcripts from audio into formatted Markdown with speaker names and timestamps. This tool automatically processes JSON data containing speaker names, text, and timestamp information, formatting them into readable...
reading-time (colophon)
Calculate reading time estimates for any text by pasting or typing content into the input area. The tool displays real-time statistics including word count, character count, and estimated reading duration...
broadcast-channel-chat (colophon)
Send chat messages that synchronize instantly across multiple browser tabs using the Broadcast Channel API. Each tab displays messages sent from other tabs with a sync indicator, allowing real-time communication...
transfer-time (colophon)
Calculate file transfer duration by entering the file size and transfer speed with their respective units. The calculator automatically converts between different measurement units (GB, MB, TB for file size;...
date-calculator (colophon)
Calculate the time between two dates with detailed breakdowns and visual representations. This tool displays the total number of days, weeks, business days, and weekend days spanning your selected date...

#May 2025 (4 tools)

flexbox-playground (colophon)
Experiment with CSS Flexbox properties in real-time using this interactive playground. Adjust container properties like flex-direction, justify-content, and align-items while watching the layout change instantly, then select individual items to...
code-with-claude-2025 (colophon)
Download and view the complete conference schedule for May 22, 2025, in iCalendar format. This page provides access to all 25 events from the San Francisco conference, including keynotes, technical...
annotated-presentations (colophon)
Create annotated presentation slides with alt text and markdown notes. Upload your slide images, add accessibility descriptions and annotations with markdown support, then generate HTML output using customizable templates. The...
gemini-image-json (colophon)
Parse and visualize JSON responses from the Google Gemini image generation API, extracting and displaying generated images, text content, and usage metadata in a formatted layout. The tool supports direct...

#April 2025 (12 tools)

html-preview (colophon)
Write HTML code directly in the editor pane and see the rendered output update in real-time in the preview pane. The editor supports live preview with debounced updates to prevent...
bluesky-thread (colophon)
View Bluesky thread conversations with nested reply hierarchies and chronological sorting options. This viewer fetches posts from public Bluesky APIs and displays them with color-coded depth levels, embedded media support,...
rtf-to-html (colophon)
Convert Rich Text Format (RTF) documents to HTML with preserved formatting, colors, and styling. Paste RTF content from your clipboard to automatically extract the color table and convert text formatting...
mask-visualizer (colophon)
Visualize bounding boxes and PNG masks from JSON data with support for multiple coordinate system origins. This tool accepts JSON input containing box coordinates and base64-encoded mask images, then displays...
gemini-mask (colophon)
Use the Gemini API to analyze images and generate segmentation masks with visual overlays. Upload an image and provide a prompt describing what you want to segment, then the application...
base64-gzip-decoder (colophon)
Decode base64-encoded gzip data to retrieve the original decompressed content. Paste your base64 string into the input field and click the Decode button to process the data. The decoder handles...
hacker-news-thread-export (colophon)
Export Hacker News discussion threads in a formatted, hierarchical structure by providing a post ID or direct link to the thread. The tool fetches all comments from the specified post...
footnotes-experiment (colophon)
Explore an interactive footnote system that enhances document reading by displaying footnote content in contextual popups when you hover over or click footnote references. The implementation uses semantic HTML with...
paste-html-subset (colophon)
Convert rich text content from clipboard into clean, filtered HTML containing only semantic elements like paragraphs, headings, lists, links, and text formatting. Paste formatted content into the editable area to...
census-reporter-claude (colophon)
Explore American Community Survey demographic and social data through an interactive search and visualization tool. Select geographies such as cities, counties, or states alongside census topics like income, education, or...
census-reporter-gemini (colophon)
Explore demographic and economic data from the US Census American Community Survey using the Census Reporter API. This tool allows you to search for specific geographic locations and data tables,...
passkeys (colophon)
Experiment with passkey registration and authentication using the WebAuthn API in your browser. This demo allows you to create passkey credentials, authenticate with them, and inspect the underlying protocol responses...

#March 2025 (15 tools)

lightning-timer (colophon)
Track time with Lightning Timer, a full-screen countdown application that displays elapsed seconds in large, easy-to-read format. Click the timer display to start, pause, or reset the countdown, and access...
avatar-web-component (colophon)
Display and edit images with an interactive cropping interface for creating avatars or profile pictures. Users can select images by clicking, dragging and dropping files, or pasting from the clipboard,...
huggingface-storage (colophon)
Check the storage size of Hugging Face machine learning models by entering a model URL or repository path. The tool queries the Hugging Face API to retrieve the total storage...
incomplete-json-printer (colophon)
Format and visualize incomplete or truncated JSON data with automatic live formatting as you type. This tool handles malformed JSON structures by applying consistent indentation and proper spacing, making it...
keyboard-filters (colophon)
Display and manage multiple filter conditions using an interactive badge interface with keyboard navigation support. Each filter badge displays a column name, operator, and value that can be edited individually,...
side-panel-dialog (colophon)
Explore a product catalog with interactive item details displayed in a smooth side panel modal. Click any product card to view comprehensive information including category, price, and description, with the...
species-observation-map (colophon)
Explore wildlife observations on an interactive map by searching for any species and viewing recent sightings from the iNaturalist community. The map displays geotagged observations within a customizable time range,...
swagger-subset (colophon)
Extract a subset of Swagger/OpenAPI definitions by selecting specific API endpoints and their dependencies. This tool parses a Swagger JSON document, displays all available paths and methods in an interactive...
token-usage (colophon)
Calculate token usage across your Claude and other LLM API calls by pasting YAML output from the LLM tool's `llm logs -su` command. The calculator automatically groups token consumption by...
css-text-wrapping (colophon)
Learn how CSS text wrapping properties control how text flows within containers, including word-wrap, word-break, white-space, text-overflow, hyphens, line-break, and text-wrap. This guide provides interactive demonstrations of each property's behavior,...
encrypt (colophon)
Encrypt and decrypt messages using a passphrase with this web application that leverages modern browser cryptography APIs. The tool generates a secure shareable link containing an encrypted message that can...
json-schema-builder (colophon)
Create JSON schemas interactively with this builder tool that allows you to define properties, set data types, and configure nested objects through an intuitive form interface. The generated schema is...
paste-rich-text (colophon)
Extract HTML code from formatted text by pasting rich content into this tool, which automatically captures and displays the underlying HTML markup. The tool provides both the raw HTML code...
schema-dsl (colophon)
Convert a compact schema definition language into JSON schema format in real-time. This tool accepts a concise DSL where you specify field names, types (str, int, float, bool), and optional...
pipfile (colophon)
Parse Pipfile.lock files to extract Python package dependencies and convert them into multiple formats for easy management and sharing. The tool automatically extracts package names and versions from the lock...

#February 2025 (4 tools)

progress (colophon)
Track the progress of the current U.S. presidential term with real-time statistics and a visual progress bar. The page displays elapsed and remaining days, percentage completion, and specific metrics related...
apsw-query (colophon)
Analyze and explain SQLite queries using APSW by entering SQL code and executing it in an in-browser Python environment. The tool provides detailed query analysis including execution plans, expanded SQL,...
sql-pretty-printer (colophon)
Format and beautify SQL queries with customizable styling options. This tool supports multiple SQL dialects including SQLite, PostgreSQL, and MySQL, allowing you to control indentation width, keyword capitalization, and indentation...
github-issue-to-markdown (colophon)
Convert GitHub issues and pull requests to markdown format by providing their URL and an optional personal access token for private repositories. The tool automatically fetches the issue details, all...

#January 2025 (5 tools)

image-to-jpeg (colophon)
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...
render-claude-citations (colophon)
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...
php-deserializer (colophon)
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....
aria-live-regions (colophon)
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...
bluesky-resolve (colophon)
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...

#December 2024 (8 tools)

yaml-explorer (colophon)
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...
word-counter (colophon)
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...
openai-webrtc (colophon)
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...
json-to-yaml (colophon)
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...
nav-for-headings (colophon)
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...
writing-style (colophon)
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...
social-media-cropper (colophon)
Create perfectly sized social media cards by uploading an image, selecting your desired aspect ratio, and adjusting the crop with zoom controls. The tool automatically centers your image on a...
prompts-js (colophon)
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...

#November 2024 (11 tools)

unix-timestamp (colophon)
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...
bluesky-timeline (colophon)
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...
bluesky-firehose (colophon)
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,...
zip-wheel-explorer (colophon)
Browse and explore the contents of Python packages and archive files directly in your browser. Enter a PyPI package name or provide a direct URL to a .whl or .zip...
iframe-api-explorer (colophon)
Explore API endpoints and view their responses in real-time using this interactive tool. The interface uses sandboxed iframes with postMessage communication to safely fetch and display JSON data from remote...
bbox-cropper (colophon)
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...
mdn-timelines (colophon)
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,...
iframe-sandbox (colophon)
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...
animated-rainbow-border (colophon)
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...
california-clock-change (colophon)
Track California's Daylight Saving Time changes with this tool designed for Pacific Time users. The page displays the most recent clock change, calculates the next scheduled adjustment, and provides helpful...
claude-token-counter (colophon)
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...

#October 2024 (18 tools)

openai-audio-output (colophon)
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...
gpt-4o-audio-player (colophon)
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...
link-temp (colophon)
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...
svg-sandbox (colophon)
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...
svg-progressive-render (colophon)
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...
clipboard-viewer (colophon)
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...
ares (colophon)
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...
text-wrap-balance-nav (colophon)
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...
escape-entities (colophon)
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...
qr (colophon)
Decode QR codes from image files by uploading, dragging and dropping, or pasting them directly into the application. The decoder processes the image data using the jsQR library to extract...
openai-audio (colophon)
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...
extract-urls (colophon)
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...
sqlite-wasm (colophon)
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...
jina-reader (colophon)
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...
click-grid-to-expand (colophon)
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...
event-planner (colophon)
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...
image-to-svg (colophon)
Convert raster images to scalable vector graphics using automated tracing technology. Upload a JPG or PNG image by dragging it onto the drop zone or clicking to browse, and the...
svg-render (colophon)
Convert SVG images to JPEG or PNG format with customizable dimensions, padding, and background colors. The tool allows you to paste SVG code directly, upload SVG files via drag-and-drop, or...

#September 2024 (6 tools)

openfreemap-demo (colophon)
Explore an interactive map of San Francisco rendered with MapLibre GL and OpenFreeMap tiles, displaying 1000 randomly distributed markers across the city. The demo showcases three different approaches for rendering...
user-agent (colophon)
Display your browser's user agent string, which contains information about your web browser, operating system, and device. This identifier is sent with every HTTP request your browser makes and helps...
markdown-math (colophon)
Render Markdown text with integrated LaTeX mathematical equations in real-time as you type. This tool converts your input into formatted HTML output while simultaneously displaying a live preview with properly...
github-api-write (colophon)
Upload files and images to GitHub repositories using the GitHub API. This tool accepts either text content or image files and commits them to a specified repository path with proper...
jina-embeddings-image-token-calculator (colophon)
Calculate the token cost for images used in API requests by uploading or dragging an image file into the tool. The calculator analyzes the image dimensions and divides them into...
youtube-thumbnails (colophon)
View YouTube video thumbnails in multiple resolutions by entering a video URL or ID. This tool extracts and displays all available thumbnail formats from YouTube's image server, allowing you to...

#August 2024 (5 tools)

pomodoro (colophon)
Track productivity sessions with this Pomodoro timer application that manages timed work intervals with customizable durations. Set a goal for each session, choose from preset time intervals ranging from 5...
gemini-chat (colophon)
Chat with Google's Gemini AI models directly in your browser using this interactive chat application. Simply enter your Gemini API key (stored locally for convenience) and select from multiple available...
gemini-bbox (colophon)
Analyze images using the Google Gemini API and visualize detected objects as bounding boxes or points overlaid on the original image with coordinate grid lines. The tool supports multiple Gemini...
tiff-orientation (colophon)
Read TIFF orientation metadata from JPEG images by uploading or dragging files into the drop zone. The tool parses the EXIF data embedded in the image file to extract the...
audio-spectrum (colophon)
Visualize real-time audio frequency data from your microphone as an animated spectrum display. This application uses the Web Audio API to capture microphone input, analyze frequencies using FFT (Fast Fourier...

#July 2024 (6 tools)

image-resize-quality (colophon)
Compare images at different sizes and quality levels by uploading a photo, defining a crop area, and generating multiple preview versions with varying dimensions and compression settings. The tool displays...
exif (colophon)
Extract and view EXIF metadata from image files, including GPS coordinates and other embedded image data. This tool allows you to upload an image and instantly retrieve detailed information such...
box-shadow (colophon)
Generate custom CSS box-shadow effects with interactive controls and real-time preview. Adjust horizontal and vertical offsets, blur radius, spread radius, color, and opacity using intuitive sliders and color picker to...
timezones (colophon)
Plan meetings across multiple time zones by selecting two locations and viewing their local times side-by-side. The comparison table displays 48 consecutive hours of UTC times with corresponding local times...
chrome-prompt-playground (colophon)
Interact with Chrome's built-in language model API through this web-based playground interface. The application allows users to check model availability, download the model if needed, and execute text prompts to...
compare-pdfs (colophon)
Compare two PDF documents side-by-side to identify differences between them. Upload or drag and drop two PDF files to view their pages rendered as images, with a third panel highlighting...

#June 2024 (1 tool)

arena-animated (colophon)
Compare Elo ratings across different language models and dates using this interactive animated bar chart. Load your own JSON data with model names, dates, and Elo scores, then watch the...

#May 2024 (1 tool)

csv-marker-map (colophon)
View CSV data as markers on an interactive map using the `?csv=URL` parameter to specify a CSV file containing latitude and longitude columns. The map supports additional customization through query...

#April 2024 (2 tools)

render-markdown (colophon)
Convert Markdown text to HTML using GitHub's official Markdown API, with options to render standard Markdown or GitHub Flavored Markdown (GFM). The tool displays a live preview of the rendered...
haiku (colophon)
Capture images from your device's camera and generate haiku poetry inspired by what you photograph using Claude's vision capabilities. Press the camera button to take a photo, and the AI...

#March 2024 (1 tool)

ocr (colophon)
Extract text from PDF documents and images using optical character recognition (OCR) directly in your browser. The tool leverages Tesseract.js for text recognition and PDF.js to handle multi-page PDF files,...