Alexandru Vornicescu

If you want to download external images in your posts automatically so the page will use local image files instead of external image files then this plugin can help you.
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/1dZZ5ucNlQY?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
It will replace the URLs of all external images (if the image has a different host URL) in your posts.
The URLs will get replaced with a local image copy URLs.
The action will be made on the post/page preview, not in the admin Edit page or after post save.
All the images that will be saved to your uploads folder (wp-content\uploads), not to your Media Library page.
This plugin can make your work faster if you like to use external images from other sites and you would like not to lose times on uploading images into you library every time for every image.

Download External Images In Posts

IT WORKS

This is the worst concept I have ever seen. This plugin should be reported.

I don't know what is the main concept of the plugin is. If you enable this plugin and start working with it, it downloads 1 content 100th of times or every time when someone visits the post. Even it consumes storage because everytime someone visits, first the plugin downloads and files to internally and then serve.

Within the middle of the time, visitors need to wait for the download and serve the content.

Therefore, SORRY TO SAY BUT, THIS IS A FLOP PROJECT.

Worst concept - Advising to not to use

This plugin will download external images in your posts to your "wp-content/uploads" folder.

Jean-David Daviet

Download Media allows you to directly download medias from the media library to your device in one click.
You can download medias one by one, or in bulk.
<h4>Need Help? Found A Bug? Want To Contribute Code?</h4>
Support for this plugin is provided via the <a href="https://wordpress.org/support/plugin/download-media" rel="ugc">WordPress.org forums</a>.
The source code for this plugin is available on <a href="https://github.com/JeanDavidDaviet/download-media" rel="nofollow ugc">GitHub</a>.
<h3>List of hook available</h3>
Filters
<ul>
<li>download_media_settings_cap – Set default capability for plugin’s settings modifications</li>
<li>download_media_output_dir – Set default output directory for plugin’s zip files</li>
<li>download_media_cron_intervals – Allow the modification of the plugin’s cron intervals</li>
<li>download_media_cron_daily_second – Allow the modification of the daily cron interval of time</li>
<li>download_media_cron_weekly_second – Allow the modification of the weekly cron interval of time</li>
<li>download_media_cron_montly_second – Allow the modification of the monthly cron interval of time</li>
<li>download_media_zip_directory – Set default zip files directory location</li>
</ul>

Download Media

Allows medias in the media library to be direclty download one by one or in bulk.

Download External Images In Posts vs Download Media