A complete reference of HTTP status codes explained in plain English: 100 through 511, searchable, with notes on what matters for SEO — 301, 302, 404, 410, 503.
Runs in your browser — data is not sent to a serverNetwork, mask, host range, and host count from CIDR.
Number Base ConverterBinary, octal, decimal, hex, and any base up to 36.
Data Size ConverterBytes, KB, MB, GB — and download time at your speed.
MIME Types ReferenceMIME types by file extension — searchable, copy in one click.
We'll collect and tidy up website data: prices, products, contacts, reviews — in the format and at the frequency you need.