Fetches a domain's home page and returns its declared icons, ranked, with the best-available logo first.

Generate CSPRNG bytes from the Web Crypto API, returned as hex, base64 or a UUID. Never Math.random.

For one DailyMed SET ID: the current label version and date, its products with active ingredients and package descriptions, its marketed NDC codes, and the full revision history.

The 15-digit census block FIPS code containing a US coordinate, with its county and state codes and the block bounding box.

Convert a US street address to latitude/longitude with a matched, standardized address. US coverage only.

Registrar, creation and expiry dates, status codes, nameservers and DNSSEC state for a domain, from the authoritative registry over RDAP.

Civil, nautical and astronomical twilight boundaries plus golden and blue hour windows for a date and coordinate, in UTC.

Renders one instant, or now, in up to 20 IANA zones at once with UTC offset, abbreviation and DST state.

Validate an ISO 17442 Legal Entity Identifier checksum and extract its issuing LOU prefix.