UD5 Toolkit
Simple Uptime Monitor - Online Check Website Status from Your Browser
Enter a URL and click to check if it's reachable from your browser (CORS-limited, uses no-cors fetch). Quick manual test. Local only.
Tag: Website Tools - Build & Check
5+ toolsWhat Font is Used on a Website - Online Detector
Enter a URL and extract the font stacks and web font URLs used on that page. Quick typography research.
Website Carbon Footprint Estimator - Online Eco Check
Enter a URL and get a rough estimate of its carbon emissions per page view. Based on data transfer size and energy model. Educational.
Favicon Converter - Online Image to .ico & Multi-size
Upload a logo and generate a pack of favicon sizes plus a .ico file. All conversion in your browser.
Favicon Generator - Online Create Favicon from Image
Create a favicon for your website by uploading an image. Resize to standard sizes, download as .ico or PNG. All done locally without server involvement.