Keyhole Slot Hanger Calculator – Online Picture Frame Positioning
Enter frame dimensions to perfectly place keyhole slots so the picture hangs level. Includes printable mounting template.
UD5 Toolkit
Find the perfect eye-level height for your artwork using the 57-inch gallery standard. Get precise hook placement instantly—ideal for any wall or above furniture.
Enter frame dimensions to perfectly place keyhole slots so the picture hangs level. Includes printable mounting template.
Select meal type and recommended portion to see suggested plate diameter for appealing plating. Psychology of presentation.
Project your retirement savings growth with monthly contributions, employer match, and CAGR. Interactive chart. Financial data stays on your device.
Enter spring constant and displacement to find force and stored energy. Visual compression.
Follow along with animated crease patterns to fold a paper crane. Pause and rewind steps.
Enter container width, number of items, gap, and flex‑basis. See the resulting sizes instantly. Plan your flex layout.
Convert 3-digit capacitor codes (like 104, 222) to capacitance value in pF, nF, µF. Also converts back. Useful for reading tiny ceramic capacitors.
Calculate how many bottles of puzzle glue you need based on puzzle dimensions. Save a trip to the store. Simple area math.
Enter your hole cards and the community cards to see probability of winning, drawing, etc. Simple simulation in browser. Educational, not gambling.
Upload an image and get a suggested alt text description using a local vision model (WASM). Improve SEO and accessibility fast.
Visually design a custom :focus‑visible outline style. Copy the CSS. Better than the default.
Create beautiful, syntax-highlighted screenshots of your code snippets. Choose themes and export as PNG. All client-side canvas rendering.
Enter an IP and CIDR prefix to visually see network address, broadcast, usable range, and subnet mask conversions.
Create a 'SALE' or 'NEW' corner ribbon in pure CSS. Adjust colors, position, and text. Great for e‑commerce.
Paste code and generate a beautiful, syntax‑highlighted PNG image. Choose theme and window style. Shareable code pics.
Paste a screenshot or image, crop it, and add arrows, rectangles, and text. Essential for bug reports and tutorials.
Adjust margin, border, padding, and content sizes interactively and see the rendered box model. Get the exact CSS. Teach or learn layout.
Paste an HTML snippet and get a report on missing, empty, or suspicious alt texts. Improve your image SEO and a11y.
Design layered box shadows interactively and get the CSS code in real time. Adjust offset, blur, spread, and color. Essential tool for UI designers.
Enter an amount and see a virtual stack of $100 bills with height comparison to everyday objects.
Use anchor positioning to perfectly center a popover relative to its anchor. No JavaScript. See the modern approach.
Visually configure scroll‑snap containers and items. Adjust alignment, stop behavior, and padding. Copy the clean CSS instantly.
Use an interactive image to count scute rings and estimate approximate age. Not exact, but fun educational tool.
Generate the Koch snowflake fractal to a desired iteration level. See how the perimeter grows. Interactive geometric art.
Use the EyeDropper API to sample a color from anywhere on your screen. Click, select, and copy the hex. No extensions needed.
Set width, height, depth, and colors to generate an isometric box using CSS transforms. Copy to your project.
Select character sets (Latin, Cyrillic, Greek) and generate the exact unicode‑range descriptor for your fonts. Improve performance.
Interactively add and adjust multiple box shadows on a sample element. Drag sliders for offset, blur, spread, and color. Copy the clean CSS code instantly.
Generate a random HTML/CSS card with different box model properties. Inspect and guess the size. For learners.
Learn how to let content extend a few pixels beyond a clip boundary with overflow‑clip‑margin. Interactive playground.