Poco

This plugin searches your blog posts for images that are hosted on Blogger (blogger.com or blogspot.com), 
downloads them to your server, and updates your posts to refer to the downloaded versions.

Blogger Image Import

A plugin that copies blogger hosted images to your local server and updates the links within the posts.

Mahmoud Hamed

Bat Importer for Blogger imports content from a public Blogger blog using the numeric Blog ID.
Features include:
<ul>
<li>Imports posts and optional static pages.</li>
<li>Downloads Blogger-hosted images into the WordPress media library.</li>
<li>Removes the duplicated leading image from post content when it is used as the featured image.</li>
<li>Removes the extra Blogger caption directly under the removed opening image when present.</li>
<li>Saves old Blogger paths and creates 301 redirects, enabled by default for imported Blogger content.</li>
<li>Imports Blogger labels as WordPress categories and redirects Blogger label URLs to matching categories when possible.</li>
<li>Optional fallback to redirect unmatched 404 requests to the homepage, disabled by default until enabled by the site owner.</li>
<li>Stops import on demand from the admin screen.</li>
<li>Full plugin-data reset for a fresh migration run.</li>
<li>Cleans imported Blogger HTML through a WordPress allowlist before saving content.</li>
<li>WordPress-style admin UI for import management.</li>
</ul>
This plugin is intended for public Blogger blogs. If a blog is private, feed access will fail.
<h3>External Services</h3>
This plugin connects to external services to import content from Blogger.
<ul>
<li>Service name: Blogger / Google</li>
<li>What the service is used for: Fetching the public Atom feed for the Blogger blog specified by the site owner, and optionally downloading publicly accessible Blogger-hosted images referenced by imported posts or pages.</li>
<li>What data is sent: The Blogger Blog ID entered by the site owner is used to request the public feed. Requests for images may be made to the image URLs found in the public feed. No customer lists, passwords, or private WordPress content are sent by the plugin.</li>
<li>When the service is contacted: Only when the site owner runs an import or when the plugin downloads Blogger-hosted images referenced by the public feed during that import process.</li>
<li>Service URLs:
<ul>
<li>https://www.blogger.com/</li>
<li>https://policies.google.com/privacy</li>
<li>https://policies.google.com/terms</li>
</ul>
</li>
</ul>

Bat Importer for Blogger – Unlimited & Free Blogger Importer

Import public Blogger blogs into WordPress by Blog ID, with optional image download, page import, and redirect support.

Blogger Image Import vs Bat Importer for Blogger – Unlimited & Free Blogger Importer