UD5 Toolkit
Weather Emoji Interpreter - Online Translate Symbols to Text
Paste a string of weather emojis and get a written weather forecast. Fun and educational emoji tool.
Mermaid Diagram Renderer - Online Flowchart & UML Editor
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Frequently Asked Questions
Mermaid is a JavaScript-based diagramming and charting tool that renders Markdown-inspired text definitions to create diagrams dynamically in the browser. It supports flowcharts, sequence diagrams, class diagrams, state diagrams, Gantt charts, pie charts, ER diagrams, and more.
Use
graph TD (top-down) or graph LR (left-right) to define the layout. Nodes are defined with letters or identifiers, and edges connect them using arrows like -->. You can add labels, shapes, and styles. Check the examples dropdown for a quick start.
Yes! This online editor allows you to export your diagrams as SVG (vector) or PNG (raster) directly from your browser. Use the buttons above the editor to download.
Mermaid supports flowchart, sequence diagram, class diagram, state diagram, entity relationship diagram, user journey, Gantt chart, pie chart, requirement diagram, and more. Each uses a simple text syntax that's easy to learn.
No. All rendering happens locally in your browser using the Mermaid library. Your diagram code never leaves your device unless you explicitly share it.
HTML Sanitizer API Demo - Online Safe Set HTML
Use the new Sanitizer API to safely insert raw HTML into the DOM. Blocks malicious tags. Experimental demo.
Sobriety Counter & Milestones - Online Recovery Tracker
Track days of sobriety with a motivational counter and milestone celebrations. Set quit date and see time elapsed in days, hours, minutes. Private & local.
Random Bible Verse Generator - Online Daily Scripture
Get a randomly selected Bible verse with its reference. Uplifting and quick. Public domain text.
Yoga Pose Randomizer - Online Daily Practice Sequence Builder
Generate a random sequence of yoga poses with images and descriptions. Choose difficulty and duration. Build a home practice routine. Local only.
Simple Poll Creator - Online Create & Share Voting Link
Create a simple poll with multiple options and share a unique link. Votes stored anonymously via backend-free URL hash. Quick and free.
Gratitude Journal - Online Daily Thankfulness Log
Write three things you’re grateful for each day. Saved locally. Export as text. Boost mental well-being.
Encrypted Daily Journal - Online Private Diary
Write daily notes encrypted with a password. All data stored in your browser. Export as encrypted file. True privacy.
TCP State Machine Visualizer - Online Animated Diagram
Click through the TCP connection states (LISTEN, SYN_SENT, ESTABLISHED…) and see the animated transitions. Networking education.
Mermaid Diagram Renderer - Online Markdown to Chart
Write Mermaid syntax inside Markdown blocks and instantly see rendered flowcharts, sequence diagrams, and Gantt charts. Copy SVG.
Text to ASCII Drawing - Online Simple Diagrams
Create simple ASCII diagrams (arrows, boxes, trees) using a visual editor. Copy the plain text art. For comments and docs.
Lighting Diagram Creator - Online Studio Setup Planner
Drag and drop light sources, camera, and subject to plan a photo shoot. Export diagram as image. Simple and visual.
Regex Visualizer - Online Railroad Diagram Generator
Enter a regular expression and see a visual railroad diagram explaining the pattern. Learn and debug regex.
Rock Cycle Interactive Diagram - Online Geology Model
Click through the rock cycle to see how each rock type transforms into another. Animated arrows and descriptions.
Electron Configuration Writer - Online Orbital Diagram Tool
Get the full electron configuration and orbital box diagram for any element. Learn the Aufbau principle. Fast and local.