Breathing Exercise Timer - Online Box Breathing & 4-7-8 Guide
Guided breathing exercises with animated circle for inhale/hold/exhale. Includes box breathing, 4-7-8, and resonant breathing patterns. Customizable intervals.
UD5 Toolkit
A simple mindfulness technique to calm anxiety and bring you back to the present moment.
Look around and notice 5 things you can see
Here's what you noticed. Take a moment to appreciate your surroundings.
Guided breathing exercises with animated circle for inhale/hold/exhale. Includes box breathing, 4-7-8, and resonant breathing patterns. Customizable intervals.
Practice carrom shots on a virtual board. Visualize rebounds and plan your strike on the physical board.
Select an activity, enter your weight and duration, and see the estimated calories burned. Based on MET values.
Drag words to the correct position in a sentence using in, on, at. Visual feedback.
Preview different touch feedback patterns (scale, color, ripple) for mobile buttons. Copy the CSS and HTML. Improve mobile UX.
Virtual rooms where you can place images representing items to remember. Practice the method of loci.
Control a lunar module and try to land softly on the moon. Manage fuel and thrust. Classic arcade physics. Canvas.
Choose the right extinguisher for kitchen, electrical, or garage fires. Interactive class chart. Home safety education.
Enter flight distance to see estimated CO2 emissions and how many trees it would take to absorb that over 10 years.
Answer questions about project type and strength needed to get a joint recommendation. Animations.
Virtual paper fortune teller. Pick a color, count, and reveal a random fortune. Nostalgic fun.
Calculate maximum shutter speed before star trailing (NPF rule) and estimate trail length for creative effects.
Choose base metal thickness and welding position to get the right rod diameter and amperage range. Beginner welder's quick reference.
Generate a subtle noise/grain texture as a CSS background pattern. Adjust opacity and size. For that film look.
Stack multiple background images and blend them with colors. Create unique textures. Copy the CSS code instantly.
Add some trendy skills to your resume. Generate a list of hard and soft skills relevant for tech and business jobs.
Test how `content‑type: text/html` vs `content‑type: image/svg+xml` affects SVG rendering in the browser. Modern performance hint.
Drag the virtual ring to perform multiplication, division, and unit conversions. Rediscover pre‑electronic calculator charm.
Easily compute posterior probabilities given prior, likelihood, and marginal likelihood. Visual diagram. All local.
Create a random magical item with a name, effect, and lore for your RPG session. Perfect for dungeon masters. No API.
Estimate the volumes of foreshots, heads, hearts, and tails based on wash volume and ABV. Educational only, for home‑distilling enthusiasts.
Search for the NaOH and KOH sap values of various oils. Reference for cold process soap makers.
Select text and see the Selection object properties. Create ranges programmatically. Understand how rich‑text editors work.
Enter your bow's draw weight, arrow length, and point weight to find the correct arrow spine. Essential for tuning.
Create a looping animated gradient background with multiple color stops. Copy the complete CSS keyframes. Eye‑catching.
See how `animation‑composition: replace, add, accumulate` works by layering animations on the same property. Understand the spec.
Calculate wax weight and fragrance oil needed for container candles. Adjust fragrance load %. Common wax types supported. Local helper.
Generate truly random numbers within a specified range. Useful for contests, game decisions, and sampling. Runs locally, no hidden algorithms.
Try all object‑fit values (fill, contain, cover, scale‑down) on an image. Adjust object‑position. Copy the CSS.
Simulate how a palette looks under daylight, tungsten, or fluorescent light. Understand metamerism. For accurate color work.