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A ZAT IS… WHAT YOU MAKE OF IT

This document is a work in progress, but the documented API is considered
stable.


URI SCHEMES

 * https://l.zat.is/https://pcarrier.com: creates and returns a relatively short
   link (https://zat.is/.${base32(UUIDv5("url", url))}) for
   https://pcarrier.com.

 * https://qr.zat.is/txt~https://pcarrier.com: makes a QR code instead, in
   textual form (your mileage may vary based on the font and spacing, maybe
   angle the camera to square the rectangle);

 * https://qr.zat.is/gif~https://pcarrier.com: now in GIF;

 * https://qr.zat.is/png~https://pcarrier.com: now in PNG;

 * https://qr.zat.is/png10~https://pcarrier.com: now scaled up to 10 pixels per
   block;

 * https://qr.zat.is/png10.008~https://pcarrier.com: now in blue (colors can be
   of the form RGB or RGBA or RRGGBB or RRGGBBAA);

 * https://qr.zat.is/png10.008.ff0a~https://pcarrier.com: now over slightly
   transparent yellow;

 * https://qr.zat.is/png10~https://en.wikipedia.org/wiki/QR_code%23Design: now
   linking to a URL containing an anchor; while we do our best to avoid
   escaping, it is specifically required for # so the rest of the URL is
   transmitted to our server;

 * https://qr.zat.is/png10~data:text/x-vcard,BEGIN%3AVCARD%0AFN%3APierre%20Carrier%0AURL%3Ahttps%3A%2F%2Fpcarrier.com%0AEND%3AVCARD:
   now serving a vCard by using a data: link, handled server-side.


USAGE

 * The Link header indicates the URL appearing in the QR code.
 * The To header indicates where the URL redirects to.
 * The default size of 1 pixel per block works great when the image is scaled
   “properly”, for example, except in Firefox due to lack of support:

<img src="https://qr.zat.is/gif~https://pcarrier.com/love"
 style="image-rendering:pixelated;height:25vw;width:25vw"/>



Remarks, requests? Contact Pierre Carrier.