Creating document previews like in online editors - React and Quill

I’m working on a personal project to build a web-based document editor using React and Quill. I want to show previews of my documents in a list view, kind of like how popular online editors do it. I’ve tried just showing the first few words of each doc in small text, but that doesn’t keep any of the formatting.

Does anyone know a good way to make these little preview images? They should show a mini version of the document with all the formatting intact.

I’m not sure where to start with this. Should I use some kind of image generation library? Or is there a way to render part of the document as a small preview directly? Any tips or suggestions would be really helpful!

hey mike, u might wanna check out react-pdf. it lets u render pdfs in react and u can use it to make thumbnails. just set up a component to show a scaled-down first page of ur doc. its pretty easy to use and works well with quill stuff. good luck with ur project!

As someone who’s dabbled in creating document previews, I can share a bit of my experience. I found that using html2canvas worked pretty well for generating preview images that kept the formatting intact. It’s not perfect, but it gets the job done.

The key is to render your Quill content in a hidden div, then use html2canvas to capture it. You’ll want to play around with the dimensions to get it looking right. Something like:

html2canvas(hiddenDiv, { width: 200, height: 150 }).then(canvas => {
  const previewImg = canvas.toDataURL();
  // Use previewImg as the src for your preview
});

One gotcha I ran into was with complex layouts or large documents - the previews can get a bit wonky. For those cases, you might need to get creative with CSS scaling or even consider server-side rendering if performance becomes an issue.

Remember to handle any potential errors and maybe add a loading state while the preview generates. Good luck with your project!

Having worked on similar projects, I would recommend a combination of techniques for your document previews. One effective approach is to render a scaled-down version of your Quill content in a hidden div and then use html2canvas to capture it as an image. This preserves the formatting while giving you control over the preview size.

For example, you can create a hidden container with your Quill content and apply CSS scaling (for instance, using transform: scale(0.2)). Once scaled, html2canvas can capture the content to generate an image that serves as your preview. Keep in mind that asynchronous operations and rendering issues might occur with more complex layouts, so you may need to experiment with dimensions and scaling to achieve optimal results. Caching the previews could also help improve performance.