Astro 7: What Beginners Need to Know
Astro 7 brings faster builds and stricter HTML rules. Here's what changed, in plain English, and what it means if you're just starting out.
By the Astro Nursery team. Review lead: Ryan James, Founder & CEO, Seahawk MediaPublished 5 minute readComplete beginner
Tested on Astro 7.4
In this guide
Astro 7.0 came out on June 22, 2026. The 7.x line has kept going since. Here is the short version for beginners. Your site builds faster. A build is when Astro makes the finished copy of your site. And Astro is pickier about your HTML. HTML is the basic code of a web page.
Faster builds
Much of Astro’s build system has been rewritten in Rust. Rust is a fast programming language. The rewrite covers the bundler, through Vite 8. It covers the .astro compiler. It also covers the Markdown processor. That is a new tool called Sätteri.
Astro’s own speed tests show builds running 15 to 61 percent faster. You will notice this most on sites with lots of pages. On a small first site, builds were already quick.
Stricter HTML
This is the change you are most likely to hit. The new compiler no longer fixes your mistakes for you. So an unclosed tag stops the build with an error. See how to fix it.
That is a good thing, even if it feels annoying. Your mistakes get caught right away. They do not go live first.
Spaces between elements
Astro now removes blank space between inline elements on separate lines. Do two words run together? Add {" "} between them.
Other changes you may read about
- Markdown plugins: does a tutorial mention remark or rehype plugins? They now need extra setup. Astro no longer uses that system by default.
- Astro DB: the
@astrojs/dbpackage has been removed. - Reserved file:
src/fetch.tsnow has a special meaning. Do not use that name for your own file.
Should you worry?
Are you starting today? Then no. Just install the latest version. Everything on this site will match what you see. Each guide here shows the version it was tested on.
Frequently asked questions
How do I upgrade an existing project?
Run npx @astrojs/upgrade in your project folder. Then read the official upgrade guide for anything that affects your code.
Do old tutorials still work?
Many do, but check their version. Anything that shows unclosed HTML tags, or uses Astro DB, will need changes.
Stuck on a step?
Check the common errors guide, look up a word in the glossary, or ask the friendly people in the official Astro and EmDash Discords. How to ask so people can help.