Free online web utilities

Measures download, upload, latency and jitter against Cloudflare's network.

Calculates the Italian tax code from personal data.

Editor for CSS gradients with presets and cross-browser code output.

Library of more than 100 button styles with copyable code.

Pure-CSS generators for shapes, ribbons, borders, wavy dividers and more.

Gradient maker offering linear and radial gradients with CSS output and a color picker.

Builds animated CSS gradients with adjustable colors, angle and speed.

Collection of over 600 single-element CSS loading animations with code.

Set of generators for box-shadow, gradients, border-radius and similar CSS effects.

Drag bezier handles to design and preview CSS transition timing curves.

Runs dig queries against selected nameservers from a web form.

Maps a domain's DNS records and subdomains, and renders a graph of hosts.

Visualizes a domain's DNSSEC chain of trust and highlights misconfigurations.

Suggests domain names from keywords and shows whether each is available.

Generates smoother CSS gradients by easing the color stops.

Builds an HTML email signature from a template and your contact details.

Estimates the size of an email message including attachments.

Quick internet download speed check run against Netflix servers.

Lets you pick an emoji and download it as a favicon package.

Makes a favicon from letters or initials with chosen font and colors.

Builds @font-face kits from uploaded font files with subsetting options.

Barcode maker for EAN, UPC, Code 128, Code 39, ISBN, QR and DataMatrix.

Creates QR codes from text or URLs, interface in Portuguese.

Checks whether a Gmail alias is set up correctly.