# Developer's Guide

**Important** :
We will discontinue support for the v2.0 Google Data API on September 30th, 2024.
To ensure continued functionality, update your applications that rely on the v2.0 Google
Data API to the latest API version.
For the latest version, use the links in the left-side navbar.
Note: while some GET requests (such as listing posts) will continue to be supported as feed
URLs, there are minor differences in their behavior.
For detailed information, refer to the
[Blogger Help](https://support.google.com/blogger/answer/14877110) documentation.

The Blogger Data API allows client applications to view and update Blogger
content in the form of Google Data API feeds.

Your client application can use the Blogger Data API to create new blog
posts, edit or delete existing blog posts, and query for blog posts that match
particular criteria.

This developer's guide consists of the following sections. Note that some
client libraries have been upgraded to work with version 2.0 of the Data API,
while other client libraries use version 1.0.

- [Protocol](https://developers.google.com/blogger/docs/2.0/developers_guide_protocol) (2.0)
- [.NET](https://developers.google.com/blogger/docs/2.0/developers_guide_dotnet) (2.0)
- [Java](https://developers.google.com/blogger/docs/2.0/developers_guide_java) (2.0)
- [JavaScript](https://developers.google.com/blogger/docs/1.0/developers_guide_js) (1.0)
- [PHP](https://developers.google.com/blogger/docs/1.0/developers_guide_php) (1.0)
- [Python](https://developers.google.com/blogger/docs/1.0/developers_guide_python) (1.0)

To learn about the client library for a particular programming language,
select the corresponding section. To learn more about the underlying protocol
used by all the client libraries, select the Protocol section.

Each section of the guide covers the same material: how to get started and
how to perform basic operations using a particular client library.

For information on how to migrate your client from version 1 to version 2,
and information on what's changed in version 2, see the [Google
Data APIs Migration Guide](https://developers.google.com/gdata/docs/developers-guide).

In addition to the developer's guide and the reference material, we provide
[articles](https://developers.google.com/gdata/articles) on several
useful topics.

[Back to top](https://developers.google.com/blogger/docs/2.0/developers_guide#top)