cm4all

ImpEx is a WordPress plugin that allows you to import and export data from and to your WordPress installation.
The primary goal for ImpEx is to provide a true Open Source WordPress Plugin for importing/exporting your WordPress data (including data from third-party plugins/themes).
This plugin is in an early (but working) stage.
Impex provides :
<ul>
<li>
WordPress hooks for third-party plugins to expose their own data to ImpEx Import / Export without being dependent on Impex.
</li>
<li>
a (semi) streaming architecture for large data exports/imports.
</li>
<li>
Definition of configurable import/export profiles defining data providers to use and configuration of these data providers
<ul>
<li>A user interface for importing / exporting data via ImpEx WP admin screen</li>
</ul>
</li>
<li>
the ImpEx API is designed to support resumable/cancelable imports and exports.
</li>
<li>
ImpEx provides a REST API integrated into WordPress
</li>
<li>
ImpEx is explicitly designed for use in managed WordPress instances
</li>
<li>
ImpEx development relies heavily on PHP unit testing its feature set to be stable and consistent.
</li>
<li>
a <a href="https://ionos-wordpress.github.io/cm4all-wp-impex/impex-cli.html" rel="nofollow ugc">CLI</a> for importing/exporting data via ImpEx REST interface. 
The ImpEx CLI can be used as an alternative to the ImpEx WP admin screen.
</li>
<li>
related NPM package <a href="https://www.npmjs.com/package/@cm4all-wp-impex/generator" rel="nofollow ugc">@cm4all-wp-impex/generator</a> enabling transformation of any content to Impex Export format.
Using this package you’re able to convert any content to WordPress and import it using the ImpEx plugin. See the <a href="https://ionos-wordpress.github.io/cm4all-wp-impex/cm4all-wp-impex-generator/static-website-tutorial.html" rel="nofollow ugc">Tutorial</a> 
or <a href="https://www.youtube.com/watch?v=pjG69RmULYo" rel="nofollow ugc">watch the walk-trough at YouTube</a>.
</li>
</ul>
Your help is welcome !!

cm4all-wp-impex

ImpEx contributes extendable Import / Export functionality to WordPress

Maira Foresto

Export/Import Media helps you move media between WordPress sites using CSV while keeping core media metadata such as alt text, title, caption, and description.
The plugin generates a CSV file containing useful media information such as URLs, relative paths, alt text, titles, captions, and descriptions. You can then validate that CSV, preview it, and import it in batches.
Why use this plugin? 
* Batch import: AJAX-powered processing helps avoid browser and timeout issues on medium and large imports. 
* Metadata aware: Supports title, alt text, caption, and description columns. 
* Developer friendly: Includes hooks and filters for extending CSV columns, validation, admin UI, and import/export behavior.
<h3>Features</h3>
<ul>
<li>CSV Export: Export media data to CSV with filters by date, media type, and attachment context.</li>
<li>CSV Preview: Validate and preview the file before importing.</li>
<li>Batch Processing: Import media rows in AJAX batches.</li>
<li>Local Import Mode: Register files that already exist in <code>/uploads/</code> without downloading them again.</li>
<li>Honor Relative Path: Reuse or preserve folder paths from the CSV.</li>
<li>Skip Thumbnail Generation: Speed up large imports when needed.</li>
<li>Duplicate Prevention: Uses source meta and file fingerprints to avoid importing the same media twice.</li>
<li>Downloadable Log: Save an import log as <code>.txt</code> after the process finishes.</li>
</ul>

Export/Import Media

Import and export your WordPress media library using CSV, with preview, batch processing, duplicate prevention, and support for media metadata.

cm4all-wp-impex vs Export/Import Media