3 ms·

Indeed... I wonder to what extent the author of hayro did this work specifically for Typst or if they would have done it anyway.

Vallaaaris 1y ago
Author here! Resolving one of the most-requested Typst features was definitely a big motivation for me, but I wouldn't say this was the only reason. I've done a lot of previous work on PDF (see e.g. the krilla library, although also mostly in the context of Typst), so I was already pretty familiar with how PDF works. In addition to that, I also just finished writing my master's thesis about 2D rendering (also in Rust), so I also gained a lot of knowledge in that area. Therefore, this project seemed like a good opportunity for me to create a bigger open source project myself that I could work on in my free time. :)
- IshKebab 1y ago
  And a job offer I hope!
- mwcampbell 1y ago
  Would it be feasible, with hayro-interpret and krilla, to take an existing PDF and round-trip each of the pages while wrapping the contents in marked content spans and adding tags, to remediate the accessibility of an existing PDF? Round-tripping each of the page content streams through a full-featured PDF interpreter seems cleaner than trying to edit in-place. PDFium can round-trip the content streams and add the marked content spans, but can't do the tagging. What do you think?
  - Vallaaaris 1y ago
    Yeah, this is definitely a goal for the future. But there is still quite a bit of work needed in both libraries to make this possible.
- cbolton 1y ago
  Thanks for sharing the background. It's impressive work. Makes me curious about your thesis... Is it publicly available?
  - Vallaaaris 1y ago
    Not yet, but it should hopefully be graded in 1-2 weeks and then I can share it!
    - cbolton 11mo ago
      For posterity: https://github.com/LaurenzV/master-thesis https://github.com/LaurenzV/master-thesis
- pbronez 1y ago
  Thanks for your contribution!
- thiht 1y ago
  Impressive work, congrats!

Vallaaaris 1y ago

Author here! Resolving one of the most-requested Typst features was definitely a big motivation for me, but I wouldn't say this was the only reason. I've done a lot of previous work on PDF (see e.g. the krilla library, although also mostly in the context of Typst), so I was already pretty familiar with how PDF works. In addition to that, I also just finished writing my master's thesis about 2D rendering (also in Rust), so I also gained a lot of knowledge in that area. Therefore, this project seemed like a good opportunity for me to create a bigger open source project myself that I could work on in my free time. :)

IshKebab 1y ago
And a job offer I hope!
mwcampbell 1y ago
Would it be feasible, with hayro-interpret and krilla, to take an existing PDF and round-trip each of the pages while wrapping the contents in marked content spans and adding tags, to remediate the accessibility of an existing PDF? Round-tripping each of the page content streams through a full-featured PDF interpreter seems cleaner than trying to edit in-place. PDFium can round-trip the content streams and add the marked content spans, but can't do the tagging. What do you think?
- Vallaaaris 1y ago
  Yeah, this is definitely a goal for the future. But there is still quite a bit of work needed in both libraries to make this possible.
cbolton 1y ago
Thanks for sharing the background. It's impressive work. Makes me curious about your thesis... Is it publicly available?
- Vallaaaris 1y ago
  Not yet, but it should hopefully be graded in 1-2 weeks and then I can share it!
  - cbolton 11mo ago
    For posterity: https://github.com/LaurenzV/master-thesis https://github.com/LaurenzV/master-thesis
pbronez 1y ago
Thanks for your contribution!
thiht 1y ago
Impressive work, congrats!