HTML to BBCode Converter - Online Reverse Markup
Convert simple HTML back into BBCode for forum posts. Strips unsupported tags. Keep the conversation going on legacy boards.
UD5 Toolkit
Convert BBCode to HTML and back. Supports common forum markup like bold, italic, links, images, quotes, lists, and code.
[b]bold[/b].
This converter supports: [b], [i], [u], [s], [color=...], [size=...], [center/left/right/justify], [quote], [quote="author"], [code], [list] (unordered and ordered), [img], [url], [email], and more.
Convert simple HTML back into BBCode for forum posts. Strips unsupported tags. Keep the conversation going on legacy boards.
Convert pixel values to viewport‑relative units (vw, vh, vmax, vmin) for a specified breakpoint. Includes DVH and SVH. Essential for fluid layouts.
Enter a URL and generate a responsive iframe embed code with correct aspect ratio. Supports YouTube, maps, and more.
Display detailed information about your current browser, including version, JavaScript status, cookie support, and screen size. Works instantly with no input.
Upload a small image and generate the CSS code for a custom cursor. Test it live on the page. Tiny but useful.
Upload an image and generate the CSS to use it as a custom mouse cursor. Test it live. Fun for personal websites.
Generate secure random numeric or alphanumeric pairing codes for devices. Easy for user onboarding. Local.
Generate random numbers and watch the live histogram. Compare uniform, normal, and exponential distributions.
Select your vehicle to get the correct BCI group size for a replacement battery. Quick reference.
Convert any PNG image into a proper .ico favicon file with multiple sizes embedded. For website icons. Local.
Convert hex or RGB to CIELAB L*a*b* values. Understand perceptual lightness and color opponents. Local math.
Build a complex mailto: link with to, cc, bcc, subject, and body. Get the HTML anchor tag. Local.
Paste a human‑readable date (like 'next Friday' or 'March 5, 2023') and convert it to ISO 8601 format. Quick and tolerant.
Paste an HTML `<table>` snippet and instantly get a clean Markdown table. Supports colspan and alignment hints. Local.
Reduce your HTML file size by stripping whitespace, comments, and optional closing tags. Secure browser‑based.
Convert between Gregorian and Hijri (Islamic) dates. Approximate visual reference. Local algorithm.
Convert a Gregorian calendar date to its Julian Day Number and vice versa. Used in astronomy and mainframe computing.
Translate between binary and Gray code (reflected binary code). See the bit changes. Useful for digital logic.
Encode decimal integers into signed magnitude binary representation and decode back. Learn computer arithmetic.
Convert a decimal number to 32-bit single precision IEEE 754 format. See sign, exponent, mantissa bits. Developer tool.
Convert any date into Roman numerals (day‑month‑year) for tattoos or special occasions. Clean and local.
Upload a logo and generate a pack of favicon sizes plus a .ico file. All conversion in your browser.
Convert between units of absorbed dose and equivalent dose (Gray, Rad, Rem, Sievert). Educational and reference. Local calculation.
Convert torque units between Newton-meter, foot-pound, inch-pound, and more. Essential for mechanics and engineers. Instant local conversion.
Trim a video clip and convert it into an animated GIF. Adjust frame rate and size. Processing stays on your computer for privacy.
Convert audio files between popular formats like WAV, MP3, and OGG directly in the browser. No upload, fast encoding using WebAudio and ffmpeg wasm.
Strip HTML tags and convert web content to plain Markdown. Preserve headings, lists, and links. Perfect for content migration. All processing in browser.
Easily convert JSON data arrays into CSV format for Excel or database import. Handles nested structures with flattening options. All conversions happen locally, no data uploaded.
Convert numbers between binary, octal, decimal, and hexadecimal bases. See real-time conversion as you type. Clean and simple programmer utility.
Convert angles between degrees, radians, and grads. Quick reference for mathematics and engineering. Simple and ad-free.