HTML Email Signature Builder - Online Professional Footer Creator
Create a polished HTML email signature with your photo, links, and company details. Live preview and copy HTML to clipboard. Works with Gmail, Outlook, Apple Mail.
UD5 Toolkit
Create a professional HTML email signature in seconds. Fully customizable, works with Gmail, Outlook, Apple Mail, and more. No sign‑up required.
src in the HTML.
Create a polished HTML email signature with your photo, links, and company details. Live preview and copy HTML to clipboard. Works with Gmail, Outlook, Apple Mail.
Type your name and create a stylized ASCII text banner for email signatures or forum posts. Choose a font style.
Compose messages with bold, italic, links, and code. See the raw HTML or Markdown for your Telegram bot API calls.
Create custom traceable handwriting worksheets with name or sentence. Print in dotted font. Great for teachers and parents.
Paste a robots.txt file and validate its syntax. See if a specific user‑agent can access a path. Essential for webmasters.
Paste a JSON Web Token and decode its header and payload. Verify signature if you provide the secret. Fully local.
Paste response headers string and get a security audit. Check presence and configuration of key security headers. Local analysis.
Paste a user agent string to get a human-readable breakdown of browser, operating system, and device. See your own current agent info automatically.
Paste an HTML snippet and see how a screen reader might interpret it. Highlights missing alt texts and ARIA misuses. Educational.
Test if a script or style will be allowed by a given CSP. Compute hash/nonce. Strengthen your site’s defense against XSS. Local.
Design borders with linear or conic gradients. Supports border‑image and background‑clip methods. Copy optimized CSS.
Compare two text blocks and highlight differences line by line. Ideal for code review and document revisions. All diffs computed locally for privacy.
Look at HTTP headers and JavaScript objects to guess which browser extensions might be installed. For awareness.
Paste a potential XSS vector and see if it executes in a sandboxed iframe. For security researchers and education.
Parse a URL's query string into a key-value table, or build a query string from parameters. Perfect for API testing and web development.
Enter a URL and see the full redirect chain with status codes and response times. Also validates against your chosen rule.
Paste two JSON objects and find the structural differences with side‑by‑side highlighted output. Indispensable for API debugging.
Browse Unicode by block: Latin, Cyrillic, CJK, Emoticons. See characters and copy with a click. Full reference.
Draw pixel art with a grid, color palette, and eraser. Export as PNG. Perfect for game developers and hobbyists.
Paste a website's HTML and see which text is only visible to screen readers (e.g., .sr‑only). Preview the accessible layer.
Enter HTML with aria-labels and see what a screen reader would announce. Simulates common patterns. Local educational tool.
Test required, pattern, minlength etc. See validity states and custom error messages. Learn browser‑native validation.
Graph a cubic‑bezier or steps easing function and see a bouncing ball animation using it. Copy the CSS timing‑function.
Build an iframe with different sandbox flags and see live which features are blocked. For secure embedding.
Simulate a traceroute by entering a destination IP. Learn about AS paths and latency. Does not send real packets; educational visualisation.
Draw walls on a grid and watch A*, Dijkstra, or BFS find the shortest path. Interactive animation. Learn graph traversal.
See your monitor's color depth and pixel depth. Detect if HDR or wide gamut is available using media queries.
Visually configure scroll‑snap containers and items. Adjust alignment, stop behavior, and padding. Copy the clean CSS instantly.
Generate the MD5 hash of any text string. For quick integrity checks. All local computation.
Format a list of Q&A pairs and export as a CSV ready for Anki import. Simple line‑based template. Local.