# Making thumbnails fast

DevFeed: [Making thumbnails fast](<https://devfeed.tech/articles/making-thumbnails-fast-27392.md>)

Original publisher: [Read original article](<http://engineering.khanacademy.org/posts/making-thumbnails-fast.htm>)

Author: Khan Academy

Published: 2015-09-14T22:00:00Z

Content type: tutorial

Language: en

Sources: [Khan Academy](<https://devfeed.tech/sources/khan-academy.md>)

Topics: [Image](<https://devfeed.tech/topics/image.md>), [pixel](<https://devfeed.tech/topics/pixel.md>), [Server](<https://devfeed.tech/topics/server.md>), [Software](<https://devfeed.tech/topics/software.md>)

Tags: [article](<https://devfeed.tech/tags/article.md>), [blog](<https://devfeed.tech/tags/blog.md>), [code](<https://devfeed.tech/tags/code.md>), [color](<https://devfeed.tech/tags/color.md>), [components](<https://devfeed.tech/tags/components.md>), [design](<https://devfeed.tech/tags/design.md>), [engineering](<https://devfeed.tech/tags/engineering.md>), [image](<https://devfeed.tech/tags/image.md>), [images](<https://devfeed.tech/tags/images.md>), [news](<https://devfeed.tech/tags/news.md>), [rgb](<https://devfeed.tech/tags/rgb.md>), [software](<https://devfeed.tech/tags/software.md>), [web-frontend](<https://devfeed.tech/tags/web-frontend.md>)

## AI overview

Khan Academy explains how it generated custom video thumbnails by resizing, desaturating, lightening, color-tinting, and overlaying text and branding on source images. The post also explains pixel multiplication and why the team implemented the image operations themselves because its server infrastructure could not use available libraries.

## Source excerpt

Note: This post contains quite a bit of LaTeX notation, which is not supported right now on this ... Read more