Link to specific page of PDF gets garbled

[wjdenny]

When linking to a specific page in a PDF file using a page specifier gets changed in the Quartz website output, removing the = between page and the page number.

To reproduce
In a Markdown file with contents:

[this paper](file.pdf#page=5)

the contents gets transformed to:

<a href="./file.pdf#page5" class="internal alias" data-slug="file.pdf">this paper</a>

Note the missing = between page and 5 in the output HTML.

Expected behavior
Expected output would be the full link without changing the URL.

<a href="./file.pdf#page=5" class="internal alias" data-slug="file.pdf">this paper</a>

• Quartz Version: 4.2.3
• node Version: 21.6.2
• npm version: 10.5.0
• OS: Debian 12
• Browser: Mozilla Firefox 123.0.1

[saberzero1]

Hey @wjdenny,

Thanks for opening this issue.

It seems #page=[page number] for PDFs is widely supported on modern desktop browsers. Mobile support seems a bit lower, depending on the source, especially on iOS devices.

Additionally, the #page=[page number] seems to be ignored if the PDF has been opened previously. In that case, it tends to head to the last viewed page. This seems to be intended browser caching behavior.

I'll open a pull request shortly to correct this issue.

I'll have to look into the caching behavior later if we decide to override page linking. Although I suppose implementing this behavior might be confusing for users as it is different from the default.