Color palette from a hex color - complementary, split, analogous, triadic and tetradic harmonies, a 50 to 950 scale, tints, shades and WCAG contrast ratios

jsDelivr CDN usage for an npm package over 30 days - total and daily hits, peak day, rank among all packages and npm, bandwidth and daily series

Modular typographic scale from a base size and ratio - px and rem for each step, line heights, CSS variables and fluid clamp() values between viewports

Search public GitLab.com projects by keyword - path, description, stars, forks, last activity, topics, default branch and archived flag, ranked by stars

TCP and UDP port reference - the service on a port or the ports for a service name, port range type and an exposure risk rating for sensitive services

Explain a 5-field cron expression or @daily style macro in plain English and list its next run times in UTC, with runs per day and day-matching rule

Search MDN Web Docs for HTML, CSS, JavaScript and Web API pages - title, one-paragraph summary, section, relevance score and a direct link

HTTP status code reference with name, class, meaning, whether it is retryable or cacheable by default and related codes, or list a whole class

Decode a JWT header and claims without verifying it - issuer, subject, audience, issued, not-before and expiry times, lifetime and security warnings

Search Firefox add-ons - average daily users, weekly downloads, rating, authors, categories, last update, permissions requested and recommended status

Search the cdnjs library catalog - latest version, description, license, homepage, repository, keywords, CDN URL and a ready script tag

Search the Obsidian community plugin directory - author, description, all-time downloads, latest version, last update and repository with an install link

Search the JSR TypeScript package registry - latest version, description, score, runtime compatibility, dependents, GitHub repo and update dates

Ubuntu source package versions for every release from Launchpad - newest version, pocket, component, section and publish date per series

IMF World Economic Outlook indicators by country or ranked worldwide - GDP growth, inflation, unemployment, debt and current account with forecast years

Look up a drug in the FDA National Drug Code directory - NDC, brand, labeler, dosage form, route, strength, marketing category, class and package sizes

NASA EPIC full-disc Earth images from the DSCOVR satellite for the latest or a chosen day - capture time, Earth centroid coordinates and JPG and PNG URLs

Check whether a domain name is free across up to 10 TLDs such as com, net, org, io and ai using registry RDAP, with registration and expiry dates when taken

Split a hostname with the Public Suffix List into public suffix, registrable domain (eTLD+1) and subdomain, handling co.uk, com.au and github.io correctly

Global disaster alerts from GDACS - earthquakes, tropical cyclones, floods, volcanoes, droughts with Orange or Red alert level, country, severity and dates