Secret Santa Generator - Online Pair Randomizer with Exclusions
Assign Secret Santa pairings from a list of names with spouse/partner exclusions. Optionally email results via mailto link. Fully local, no server.
UD5 Toolkit
Random fun check-in questions to warm up your meetings & boost engagement
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Assign Secret Santa pairings from a list of names with spouse/partner exclusions. Optionally email results via mailto link. Fully local, no server.
Generate a random potion with a color, effect, and ingredient list. Ideal for RPG item shops and worldbuilding.
Adjust root, margin, and threshold. See a live log of intersection events as you scroll. Debug lazy loading.
Generate a balanced lunchbox meal suggestion (main + sides) with a click. Prevent lunch rut. No account, local.
Fairly distribute pooled tips among staff based on hours worked or points. Customizable percentages. All calculations local and private.
Divide pooled tips among staff based on hours worked or weighted percentages. Ensures fair distribution. Instant local calculation.
Calculate large Fibonacci numbers in a Web Worker. See the UI remain responsive. Copy the pattern for your app.
Run a CPU‑heavy calculation (e.g., prime numbers) in a Web Worker and see the UI stay responsive. Code snippet provided.
Swipe through visual stages of cold injury to understand frostnip vs. superficial frostbite. First aid reminders.
Divide your day into blocks with color codes. Drag tasks into slots. See free time at a glance.
Schedule tasks with user‑visible, user‑blocking, or background priority. See execution order and delays. Modern web perf.
Reorder a list of items by dragging them. Paste a list, sort it by hand, and copy the new order. Simple.
Display used/total/limit JS heap size using performance.memory. Take snapshots and see growth. Simple memory leak detection.
Select a caching strategy and see a flow diagram of how requests are handled. Learn PWA patterns.
Create a custom element with named slots and see content projection in action. Learn Web Components basics.
A beautiful full‑screen drawing canvas with variable brush sizes, colors, and an eraser. Export your sketch as PNG. All data stays local.
Answer simple questions (braid/mono, hook/swivel) to see the recommended fishing knot with step‑by‑step animation.
Visually create the glassmorphism effect: background blur, transparency, and border. Copy the complete CSS. Modern UI design.
Select starting and ending surface condition to get an optimal sandpaper grit sequence. Never skip a grit again and achieve a flawless wood finish.
Enter income, pay frequency, and expected deductions to estimate your tax refund or balance due. Simplified model.
Apply content‑visibility: auto to off‑screen sections and see the rendering cost drop. Demos for infinite scroll optimization.
Help the bird fly through pipes without touching them. Click or tap to flap. Track your high score in localStorage. Classic time‑waster.
Customize falling snow particles with pure CSS or canvas. Adjust speed, size, and wind. Copy the code for your website.
Count bubbles per minute to estimate fermentation activity and approximate sugar consumption. Simple conversion.
Enter quilt perimeter, binding width, and seam allowance to get the exact fabric yardage for either straight‑grain or bias binding.
Enter the amount of leftover paint and see how many square feet it still covers. Plan touch-ups.
Keep track of stitches and rows for your knitting projects. Multiple counters with increase/decrease shortcuts. Data saved in your browser.
Check if your site has a visible and functional skip navigation link. Key for keyboard‑only users.
Pixelate selected areas of an image to hide faces or sensitive data. Adjust block size. Download the censored result.
Take a screenshot of the current browser tab using Screen Capture API. Crop, annotate with text and arrows, and download as PNG. Local only.