Web

Working notes on Web: Recommended Ad Size, Caching, CSS, Minify, Modus Operandi, and Progressive, and related topics.

Topics

Recommended Ad Size

{Wide}.

Caching

If the cache expires, the client requests with the ETag = fingerprint (as sent by the server in the past). The server checks the fingerprint and returns Not_modified if not changed.

CSS

CSS notes: finding unused rules with audit tools and PurifyCSS.

Minify

https://developers.google.com/speed/docs/insights/MinifyResources.

Modus Operandi

Domain.

Progressive

Too many transparent pixels can cause icons not to work.

Responsive img

<srcset>

SEO

SEO notes: titles, protocol display, and www.

Sitemap

Reference: http://www.sitemaps.org/

SSL

SSL notes: Let's Encrypt issuance, JKS, testing, and renewal.