Car Battery Group Size Finder – Online Year/Make/Model
Select your vehicle to get the correct BCI group size for a replacement battery. Quick reference.
UD5 Toolkit
Instantly view detailed information about your browser, operating system, and device.
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navigator.userAgent, navigator.userAgentData, screen, and navigator.connection to collect the information you see. All detection happens on your device; no data is sent to our servers. We respect your privacy.
Select your vehicle to get the correct BCI group size for a replacement battery. Quick reference.
Enter two CSS selectors and see which one would win in a specificity battle. Visual score breakdown.
Convert simple HTML back into BBCode for forum posts. Strips unsupported tags. Keep the conversation going on legacy boards.
Translate old‑school BBCode into modern HTML. Supports [b], [i], [url], [img], and more. Keep your legacy content alive. Local.
Generate secure random numeric or alphanumeric pairing codes for devices. Easy for user onboarding. Local.
Drag a virtual ruler across your screen to measure pixel distances. Horizontal and vertical guides. Useful for UI designers checking alignment.
See your monitor's color depth and pixel depth. Detect if HDR or wide gamut is available using media queries.
Use the new `name` attribute on <details> to create an exclusive accordion with zero JavaScript. Copy the clean HTML.
Generate a realistic, random user‑agent string for desktop, mobile, or bot. Perfect for API testing and scraping.
Build a group of `<details>` elements where opening one closes others. Optional JavaScript. Copy the accessible snippet.
Browse the built‑in styles that browsers apply to HTML elements. Understand why your page looks different. Static reference.
Request and release a screen wake lock to keep the device awake. See the lock state in real time. Perfect for recipes or presentations.
Create a pure HTML/CSS accordion using <details> elements. Add custom styling and get the clean code. No JavaScript required.
Use the browser's native eyedropper tool to pick any color from the screen. Shows zoomed preview. Quick and easy.
A completely black page to save battery on OLED devices. Click to go fullscreen. Simple utility.
Turn your browser screen into a full‑color flashlight or strobe. Adjust brightness and color. Simple utility.
An on‑screen ruler that measures in pixels, centimeters, and inches. Drag to resize. Handy for UI designers and developers.
Paste a user agent string to get a human-readable breakdown of browser, operating system, and device. See your own current agent info automatically.