---
title: Versions and changes
description: Switch between the draft, the published version and the changes a publish would make.
seo:
  image: /og/versions-and-changes.png
---

A document has up to two versions in the Delivery API: the draft, which `Preview: true` returns, and the published version, which every other request gets. The switch above the tree picks which one you see.

- **Draft** is the default, because it is the version you are editing. A dot on it means the draft has changes that are not published yet.
- **Published** is what frontends get today. It is disabled for a document that has never been published.
- **Changes** compares the two and shows what publishing the draft would change. Once it is selected, it shows how many changes there are.

## Changes

The Changes view shows the draft's tree with every difference marked, and opens the branches that contain a change.

The **Changes as** switch sets how a difference is drawn:

- **Diff**, the default, shows a changed value as two lines, like a code review: the published value in red, then the draft's in green.
- **Inline** keeps a changed value on one line, the published value struck through next to the draft's.

Values only in the draft are green, and values only in the published version are red, either way.

![The Changes view as a diff: the published summary in red above the draft's in green.](/blume-assets/content/content/screenshots/changes.png)

The tab reloads when you save or publish the document.

## Media

Media items have no draft, so the media tab has no version switch.

## Cultures and segments

On a document that varies by culture, the tab shows the culture you are editing, and sends it as `Accept-Language`. The same goes for a segment, sent as `Accept-Segment`.