link-checker

Please add some "short" logging format for "data:" URLs.

This could be done by shortening the URL by replacing the actual data by a (md5-)checksum like: data:image/jpeg;base64 -- md5(...)

Description of error

"data:" URLs trend to be very long, because they contain the data itself, which often are pictures and easily severa

The Content-Security-Policy header controls which domains the browser is allowed to access in various contexts. For example, if a website contains an image that is hosted at a domain that the Content-Security-Policy header doesn't allow images to be loaded from, then this image won't be loaded by a complying brows

As a feature, we could support Slack notifications when link checking fails.

This could be done as a webhook or alternatively, using ready-made GitHub actions or other integrations. In this case the README could include example of how to enable this integration.

It will be great to have a docker image that one can run locally or in CI instead of needing to install/download a binary.

Complete TODO tasks in each rule set
Reference : https://www.w3.org/TR/html5/

Update : You can add few new rules to rulesets and make a PR.