Link filters for Jekyll

Collection of filters for urls.

Usage

autonofollow

Add rel="nofollow" target="_blank" to all external links

toAbsoluteUrls

Replace anchor links like <a href="#element-on-page"> with canonical versions, eg: https://example.com/page#element-on-page

toYandexTurboContent

Special fixes for Yandex.Turbo, because their parsers raise warnings:

1. Remove navbars <nav> elements
2. Remove anchor links like <a href="#element-on-page"> (toAbsoluteUrls will not help here, because Yandex will mark absolute url with anchor link as warning)
3. Remove table of contents, because it uses anchor links

canonical

Canonicalize URL

Examples:

1. wiki/some-guide/index.html => https://example.com/wiki/some-guide
2. wiki/some-guide/subguide.html => https://example.com/wiki/some-guide/subguide
3. amp/wiki/some-guide/subguide.html => https://example.com/wiki/some-guide/subguide