Simple way to modify the HTML output by the HTML renderer?

[njor]

Question

Hello, I need to make some custom modifications to the HTML generated by the HTML renderer before it is written to the HTML files, is there a simple way to do that?
I thought that I could just write another renderer and have mdBook call it after the HTML renderer, but it looks like the file writing logic is inside the HTML renderer, with no way to add some external transformer in between, and that the only way currently would be to write another full HTML renderer.

Is there some simpler way?
Thank you.

Version

mdbook v0.4.43

[szabgab]

AFAIK there is no way to do that.
What I do is that I run some post-processing code to modify the already written HTML files.

[njor]

AFAIK there is no way to do that.
What I do is that I run some post-processing code to modify the already written HTML files.

Thank you for your answer.

That is unfortunate. 😕
Maybe a simple way to do that could be added?

Naive proposal: adding some [postprocessor] entry to the output HTML renderer, where we could list “postprocessors” that would work mostly like the existing preprocessors, but would only have the ability to transform/edit the HTML after it has been generated from the markdown, but before it is written to disk? 🤔

[szabgab]

Yes, that's an idea that has been floating around. I'd work on that too, but I don't want to overwhelm @ehuss with more PRs. I'll let him first accept the ones I already sent.

[njor]

Yes, that's an idea that has been floating around. I'd work on that too, but I don't want to overwhelm @ehuss with more PRs. I'll let him first accept the ones I already sent.

Looking forward to this.
Thank you. 🙂