No guessing
Your site 1:1
Your real CSS, fonts, theme and custom MDX components render through the same code your visitors get. If it works in astro dev, it works here.
Features 
Live preview
Your real Astro site, updating as you type.
Editor on the left, a live preview of your actual Astro site on the right — updating within seconds as you type.
Few seconds Update latency
None Setup required
None Code changes needed
v4–v7 Astro versions
Static & SSR Supported modes
Why it matters
Publish changes with confidence
See exactly how your actual site looks, or ask feedback from your teammates or client, before publishing changes.
No waiting
Type a word, see it land
The preview runs on Astro's actual dev server with HMR, and updates almost instantly as you type.
Every screen size
Check mobile before you ship
The preview has presets for mobile, tablet, and desktop. Make sure your content is responsive before it hits production.
That's not all
Share and preview
Live updates are at the heart of it, but the same preview is built for sharing and review. Get and give feedback as you need it.
01
Share a preview link
Send a private link to a stakeholder and they see the live site in their browser. No account or login needed.
02
Set an expiry
Give a shared link a lifespan — an hour, a day, a week. So review links don't outlive the review they were designed for.
03
Preview any branch
Point Zero to a branch to see how changes look in context before they ever merge to main.
04
Follows your repo
When code or content changes in your repo, the preview will automatically sync to reflect them.
Where live preview fits.
Works with
Feature
Visual Content Editor
A proper editing experience for writers, not developers
ExploreFeature
Review & Publish
See every change before it goes live.
ExploreFeature
Collaboration
Invite your team and edit content together in real time
ExploreFeature
Zero Integration
Connect Zero to your Astro site in minutes without any code changes or plugins
Explore Questions
Honest answers.
Yes. Zero runs your actual astro dev server, which loads your real stylesheets, fonts, theme config, and custom MDX components. What you see in the preview is what gets published.
Typically, only a few seconds from keystroke to a visible change, through Astro's Vite-powered HMR. Very large sites (500+ pages) may see a slightly higher latency.
The first visit spins up a fresh cloud container running your dev server, which takes about 1-2 minutes.
Not today. The dev server runs in the cloud rather than on your machine, so live preview needs an internet connection. This is the trade-off that lets it work with zero local setup on any device.
The preview panel is resizable and includes device width presets (mobile, tablet, desktop) so you can check responsive behavior before publishing.
No. Zero reads your existing content collections and generates the UI. Your codebase has zero Zero-specific files before, during, or after using it.
Live collections refresh external data upon request. Great for dynamic data like inventory or scores, but they don't render MDX or image transformations, and they require an SSR adapter. For teams editing posts, docs, and pages, Zero's preview reflects your real rendered site.
See your real site update as you type.
Point Zero at your Astro repository, and your team can be editing in minutes. No setup, no rebuild, no code in your repo.