Free online web utilities

Creates printable barcodes for inventory and products.

Online barcode generator that outputs various symbologies as JPEG or PNG.

Tests whether a port on your connection is open and reachable from the internet.

Tests a host from several countries with ping, HTTP, TCP, UDP and DNS checks.

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.

Time zone converter for UTC, EST and IST, aimed at developers and remote teams.

Runs dig queries against selected nameservers from a web form.

Builds a DMARC DNS TXT record from policy choices and lists the steps to publish it.

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.