This crate converts various file formats into an image::DynamicImage of a user-specified size.

Supports images, videos, PDFs, and ZIP/CBZ archives.

Create a thumbnail:

use thumbnails::Thumbnailer;

let thumbnailer = Thumbnailer::new(250, 250);
let thumb = thumbnailer.get("video.mp4")?;
thumb.save("thumb.png")?;

Some file types require additional setup and can be disabled via features if unneeded.

Video thumbnails depend on ffmpeg. See rust-ffmpeg

PDF thumbnails depend on pdfium. See pdfium-render