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highlight.js
Pygments
Shiki
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prism.js
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Based on our record, prism.js seems to be more popular. It has been mentiond 22 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
It reminded me of the code highlighter[0], and the ORM Prisma[1]. [0] https://prismjs.com/. - Source: Hacker News / 6 months ago
Starting sometime in early December of 2025, a change was rolled out to the 1Password browser extension that began injecting prism.js onto every site and targeting every block it encountered. - Source: dev.to / 7 months ago
The site uses Astro (https://astro.build/) and the code blocks are generated using Shiki (https://shiki.style/). As Shiki generates the HTML and CSS at build-time instead of requiring runtime JS like alternatives like Prism (https://prismjs.com/#basic-usage), it's actually quite performant. I think it's unlikely that a couple of hundred lines with some empty spans in is going to cause performance issues โ imo it's... - Source: Hacker News / about 1 year ago
First step it to open src/app/app.config.ts, enable markdown file support, and add a syntax highlighter. You can pick between Prism or Shiki, both are great, but for this example, weโre rolling with Prism. - Source: dev.to / over 1 year ago
โจ Explore Prism.js for more themes and plugins! - Source: dev.to / over 1 year ago
highlight.js - Highlight.js is a syntax highlighter written in JavaScript. It works in the browser as well as on the server.
Diff Checker - Diff Checker is a free online diff tool that quickly and easily gives you the text differences...
Pygments - Generic syntax highlighter suitable for use in code hosting, forums, wikis or other applications...
Beyond Compare - Beyond Compare allows you to compare files and folders.
Shiki - A beautiful syntax highlighter based on TextMate grammar, accurate and powerful.
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.