dath

With the SimpleGal plugin you can simply create galleries. 
Just upload your images, add the SimpleGal Shortcode to your posts or pages and the gallery will appear. 
For an optimal gallery view you should install a lightbox plugin.
Mit dem SimpleGal Plugin kannst du ganz einfach Galerien erstellen. 
Einfach deine Bilder hochladen, den SimpleGal Shortcode deinem Artikel oder deiner Seite hinzufügen und schon ist deine Galerie fertig. 
Für eine optimale Galerie-Darstellung solltest du ein Lightbox-Plugin installieren.
Available languages: English and German

SimpleGal

Create an Image-Gallery in 5 simple Steps. Just add the shortcode to your posts.

lerougeliet

SEO Images Reloaded is a WordPress SEO plugin which automatically updates all images with proper ALT and TITLE attributes for SEO (search engine optimization). If your images do not have ALT and TITLE already set, SEO Images Reloaded will add them according the options you set.
The ALT attribute is an important part of search engine optimization. It describes your images to search engines and when users search for images this is a key determining factor for a match.
The TITLE attribute play a lesser role but is important for visitors as this text will automatically appear in the tooltip when their mouse is hovering over the image.
Supported tags:
<ul>
<li>%file_name% – image file name (without extension)</li>
<li>%post_title% – post title</li>
<li>%author% – post author</li>
<li>%category% – first post category</li>
<li>%categories% – all post categories</li>
<li>%tag% – first post tag</li>
<li>%tags% – all post tags</li>
<li>%media_title% – image title in media library</li>
<li>%media_caption% – image caption in media library</li>
<li>%title_attr% – existing title attribute on tag</li>
<li>%alt_attr% – existing alt attribute on tag</li>
</ul>
This is a fork (an updated clone) of <a href="https://wordpress.org/plugins/seo-image/" rel="ugc">SEO Friendly Images</a> by <a href="http://www.prelovac.com/vladimir/" rel="nofollow ugc">Vladimir Prelovac</a>. The original plugin had a bug causing it to never add alt or title attributes.
<h3>License</h3>
This file is part of SEO Images Reloaded.
SEO Images Reloaded is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
SEO Images Reloaded is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with SEO Images Reloaded. If not, see <a href="http://www.gnu.org/licenses/" rel="nofollow ugc">http://www.gnu.org/licenses/</a>.

SEO Images Reloaded

SEO Images Reloaded automatically adds alt and title attributes to all your images to increase traffic from search engines.

SimpleGal vs SEO Images Reloaded