UD5 Toolkit
Pomodoro Task Planner - Online Work Sessions & To‑Do List
Combine a Pomodoro timer with a built‑in to‑do list. Estimate pomodoros per task, track completed sessions, and see daily progress. All data stored locally.
Pomodoro Task List - Online Focus Timer with To-Do
Pomodoro Timer
Focus Session #1
25:00
🍅 Today: 0 sessions · 0 min
Task List
Add a task and press â–¶ to focus on it.
Frequently Asked Questions
The Pomodoro Technique is a time management method that breaks work into intervals, typically 25 minutes, separated by short breaks. It helps improve focus and productivity by encouraging sustained concentration and regular rest.
Click the play button next to any task to start a Pomodoro session for that task. When the timer finishes, the completed Pomodoro will be automatically added to that task, helping you track how much time you've spent on each activity.
Yes! Open the settings (⚙️) to adjust focus duration, short break, long break, and how many Pomodoros before a long break. Your preferences are saved automatically.
Absolutely. Your tasks, settings, and daily Pomodoro statistics are stored locally in your browser, so you can close the page and come back without losing anything.
Yes, the timer and task list are fully responsive and optimized for mobile. You can use it on your phone or tablet just like on desktop.
Simple Kanban Board - Online Local To‑Do & Columns
A super lightweight Kanban board with drag‑and‑drop. Columns: To Do, Doing, Done. Data stays in your browser.
Cron Job Simulator - Online Visual Schedule Tester
Set a cron expression and see a calendar of the next 1,000 execution times. Never miss a schedule again.
Crontab Expression Editor - Online Interactive Cron Builder
Build cron expressions using a visual editor with dropdowns. See human-readable description and next run times. Easier than raw cron.
Cover Letter Generator - Online Customizable Job Application
Create a tailored cover letter based on job title, your skills, and a template. Download as text or PDF print. Private.
Event Loop Visualizer - Online See Call Stack & Microtask Queue
Watch a simulation of how the JavaScript event loop handles synchronous code, microtasks, and macrotasks. Learn async.
shape‑margin & clip‑path Text Wrap - Online Magazine Layout
Float an image and wrap text around a non‑rectangular shape. Adjust shape‑margin. Copy the CSS. For magazine‑style web.
Gamepad Tester - Online Button & Axis Visualizer
Connect a game controller and see every button press, axis movement, and vibration test. Uses the Gamepad API.
SQL Formatter & Beautifier - Online SQL Query Cleaner
Format and beautify SQL queries for improved readability. Supports various SQL dialects. Quick syntax highlighting and local processing ensure a secure experience.
Crystal Load Capacitance Calculator - Online Pierce Oscillator Tool
Calculate load capacitors for a crystal oscillator given stray capacitance and crystal CL. Essential for microcontroller circuit design. Local.
Mailto Link Generator - Online HTML Email Link
Build a complex mailto: link with to, cc, bcc, subject, and body. Get the HTML anchor tag. Local.
Popover Menu Builder - Online HTML‑Only Dropdown
Create a pure HTML dropdown menu using the popover attribute. Style it with CSS and copy the accessible snippet. No JavaScript.
Simple Circuit Simulator – Online Visual Resistor LED
Drag a battery, resistor, LED onto a grid and simulate current flow. Show Ohm's law in action.
SQL CRUD Query Generator - Online SELECT INSERT UPDATE DELETE
Fill in a table name and columns, and the tool writes the correct SQL INSERT, UPDATE, DELETE, and SELECT queries. For quick scaffolding.
Envelope Budget Planner - Online Cash Category Allocator
Allocate your monthly income into virtual envelopes by category. Track spending and see remaining balances. LocalStorage.
Bubble Wrap Popper - Online Stress Relief & Fidget Game
Pop the virtual bubble wrap with mouse or touch. Satisfying sound and reset button. Pure stress‑busting fun in your browser.
Unit Circle Visualizer - Online Trigonometry Interactive Chart
Drag an angle around the unit circle and see sin, cos, tan values change live. Degrees and radians display. Perfect for learning trig.
Telescope Field of View Simulator – Online Eyepiece & Object
Input telescope and eyepiece parameters to see a simulated view of the Moon or Andromeda. Plan observations.
SQL JOIN Visualizer - Online Interactive Venn Diagrams
See interactive Venn diagrams for SQL JOINs: INNER, LEFT, RIGHT, FULL, CROSS. Understand set theory visually. Local static site.
Leather Stitching Spacing Guide – Online SPI for Projects
Select project type and leather weight to get recommended stitch spacing and thread size.
Mini Capsule Wardrobe Planner – Online 10‑Item Outfit Combos
Select 10 clothing items and generate all possible outfit combinations. Visual grid. Travel light.
Crontab Guru - Online Cron Expression Parser & Translator
Describe cron schedule expressions in plain English and test future execution times. Indispensable for DevOps and backend developers. Local analysis.
Web Worker Fibonacci Demo - Online Non‑Blocking Calculation
Calculate large Fibonacci numbers in a Web Worker. See the UI remain responsive. Copy the pattern for your app.
Printable Word Search Puzzle Maker - Online Generator
Enter a list of words and generate a custom word search puzzle in PDF/PNG format. Great for teachers and parties. Local.
Text to Character Array - Online For Programmers
Split a text into an array of individual characters, ready to paste into code. Options for quotes and newlines.
Laundry Symbol Decoder – Online Wash, Dry, Iron Guide
Click to build a laundry symbol and learn its meaning, or look up common symbols. Never ruin clothes again.
Web Locks API Demo - Online Resource Coordination
Acquire and release locks across tabs. Prevent race conditions in IndexedDB or localStorage. Visual queue and lock state.
GIF Caption Adder - Online Add Text to Animated GIFs
Upload an animated GIF and overlay text on top or bottom. Preserves animation. Instant download without upload. Pure browser canvas.
object‑view‑box Demo - Online Zoom Into Image
Crop and zoom into an image using the object‑view‑box property. Define inset(). Great for responsive art direction.
Paint Color Visualizer – Online Test Wall Colors on Sample Rooms
Simulate paint colors on a pre-loaded room photo by adjusting hue, saturation. Find your perfect shade before buying. Local canvas.