Why editing one word in a PDF is so much harder than it looks

I spent the last few months building a PDF editor. The feature that sounded easiest — change a word, leave everything else alone — turned out to be the one that ate most of the time. Here is what I learned, mostly by getting it wrong.

Source: [Dev.to](https://dev.to/vbhattaccmu/why-editing-one-word-in-a-pdf-is-so-much-harder-than-it-looks-9jh)