Aldert Vaandering

NextGen NivoSlider allows you to create a <a href="http://nivo.dev7studios.com/" rel="nofollow ugc">NivoSlider</a> as a widget or with a shortcode. 
This plugin uses the ‘NextGen Gallery’ plugin to obtain the images using tags or gallery IDs.
NivoSlider is a great responsive image slideshow that is highly customizable. With a large array of effects and many additional options you are sure to find a combination that will suit your website.
Requirements:
<ul>
<li><a href="https://wordpress.org/extend/plugins/nextgen-gallery/" rel="ugc">NextGen Gallery Plugin</a></li>
</ul>
Features:
NextGen NivoSlider has been completely overhauled and is continually being added to. It currently supports all the of NivoSlider’s original functions and even has some extra’s!
<ul>
<li>Responsive!</li>
<li>Fully integrated with NextGen gallery</li>
<li>Theme support</li>
<li>Automatic URL linking (put a mailto:, http://, ftp:// or local / into your alt text)</li>
<li>Extra effect(s)</li>
<li>Shortcode and Widget support</li>
<li>Touchscreen support (experimental)</li>
</ul>
Parameters:
You can use the following parameters in the [ngg-nivoslider] shortcode. 
Defaults, where applicable, are shown between parentheses (), available options between brackets [].
<ul>
<li>title: Title for slider. Leave blank for no title. (ex: title=”My Slider”)</li>
<li>gallery: Leave blank to use all galleries or choose a gallery to use. (ex: gallery=”galleryid”)</li>
<li>order [random”|”asc”|”desc”|”sortorder”]: Order to display results in. You can choose; Random, Latest First, Oldest First, or NextGen Sortorder. Random will still work when a page is cached. (ex: order=”random”)</li>
<li>tags: comma separated list of tags to filter results by. (ex: tags=”tag1, tag2″)</li>
<li>shuffle [boolean]: If order is random and this is true will shuffle images with javascript. Useful if your are caching your pages. (ex: shuffle=”true”)</li>
<li>max_pictures: The maximum amount of pictures to load. (ex: max_pictures=”6″)</li>
<li>html_id (“slider”): HTML id to use. Defaults to ‘slider’. Needs to be different for multiple sliders on same page. (ex: html_id=”custom-slider”)</li>
<li>width: Width to use on slider. (ex: width=”200″)</li>
<li>height: Height to use on slider. (ex: height=”150″)</li>
<li>center: Centers content in container. Requires width to be set. (ex: center=”1″)</li>
<li>resize: Resizes the images using TimThumb(v2). Available options are: (ex: resize=”3″) 
 1 – Resize to Fit specified dimensions (no cropping) 
 2 – Crop and resize to best fit the dimensions (default) 
 3 – Resize proportionally to fit entire image into specified dimensions, and add borders if required 
 4 – Resize proportionally adjusting size of scaled image so there are no borders gaps</li>
<li>resizewidth: The width TimThumb will use to resize the image (sc: resizewidth=”800″)</li>
<li>resizeheight: The height TimThumb will use to resize the image (sc: resizeheight=”600″)</li>
<li>resizebg (“ffffff”): The color (denoted in hex) to use for the borders that are generated when using resizing option 3 (ex: resizebg=”a0fb69″)</li>
<li>caption [“alttext”|”description”|”both”]: Show a caption with the slide, showing either the alttext or description as set up in NextGen gallery or both as “Bolded AltText – Description”</li>
<li>htmlcaption: HTML formatted caption to show on all images (ex: htmlcaption=”Title Welcome to <a>this website</a>“)</li>
<li>showgallerytitle [boolean]: Display the gallery title (ex: showgallerytitle=”true”)</li>
<li>showgallerydesc [boolean]: Display the gallery description (ex: showgallerydesc=”true”)</li>
</ul>
Nivo slider settings:
Please check the NivoSlider website for <a href="http://nivo.dev7studios.com/#usage" rel="nofollow ugc">more details</a>.
<ul>
<li>effect: What effect to use as transition. You can specify sets like: ‘fold,fade,sliceDown’. See list below for available effects.(ex: effect=”sliceDown,sliceUp”)</li>
<li>slices: The amount of slices to divide the image to for the slice effects(ex: slices=”3″)</li>
<li>boxCols: Amount of columns to split the image into for the box effects (ex: boxcols=”10″)</li>
<li>boxRows: Amount of row to split the image into for the box effects (ex: boxrows=”8″)</li>
<li>animSpeed: Slide transition speed in milliseconds (1000ms = 1 second). (ex: animspeed=”300″)</li>
<li>pauseTime: Time to pause in milliseconds (1000ms = 1 second) before continueing to the next image (ex: pausetime=”5000″)</li>
<li>startSlide: Set starting Slide. It’s 0-index so use 0 for the first slide. (ex: startslide=”3″)</li>
<li>directionNav [“true”|”false”]: Whether to display the Next & Prev controls or not. (ex: directionnav=”true”)</li>
<li>controlNav [“true”|”false”]: 1,2,3… (ex: controlnav=”setting”)</li>
<li>controlNavThumbs [“true”|”false”]: Use thumbnails for Control Nav if set to true. (ex: controlnavthumbs=”true”)</li>
<li>thumbsWidth: Resize thumbnail to this width. Recommended to set if using thumbnails. (ex: thumbswidth=”20″)</li>
<li>thumbsHeight: Resize thumbnail to this height. Recommended to set if using thumbnails. (ex: thumbsheight=”20″)</li>
<li>thumbsContainerHeight: Height for thumbnails container. Calculation should be ‘number of thumbnail image rows’ x ‘thumbsheight’. (ex: thumbscontainerheight=”20″)</li>
<li>thumbsGap: Gap between thumbnails. (ex: thumbsgap=”5″)</li>
<li>controlNavThumbsFromRel: Use image rel for thumbs. (ex: controlnavthumbsfromrel=”setting”)</li>
<li>controlNavThumbsSearch: Replace this with… (ex: controlnavthumbssearch=”setting”)</li>
<li>controlNavThumbsReplace: …this in thumb Image src. (ex: controlnavthumbsreplace=”setting”)</li>
<li>keyboardNav: Use left & right arrows. (ex: keyboardnav=”setting”)</li>
<li>pauseOnHover: Stop animation while hovering. (ex: pauseonhover=”setting”)</li>
<li>manualAdvance: Force manual transitions. (ex: manualadvance=”setting”)</li>
<li>prexText: Text to display for previous (ex: prevtext=”prev”)</li>
<li>nextText: Text to display for next (ex: prevtext=”next”)</li>
<li>randomStart [“true”|”false”]: Start with a random slide (ex: randomstart=”true”)</li>
<li>captionOpacity: Universal caption opacity. (ex: captionopacity=”setting”)</li>
<li>disableCaptions: (ex: disablecaptions=”1″)</li>
<li>beforeChange: (ex: beforechange=”setting”)</li>
<li>afterChange: (ex: afterchange=”setting”)</li>
<li>slideshowEnd: Triggers after all slides have been shown. (ex: slideshowend=”setting”)</li>
<li>lastSlide: Triggers when last slide is shown. (ex: lastslide=”setting”)</li>
<li>afterLoad: Triggers when slider has loaded. (ex: afterload=”setting”)</li>
</ul>
Nivo Effects:
<ul>
<li>random</li>
<li>sliceDown</li>
<li>sliceDownLeft</li>
<li>sliceUp</li>
<li>sliceUpLeft</li>
<li>sliceUpDown</li>
<li>sliceUpDownLeft</li>
<li>fold</li>
<li>foldReverse</li>
<li>fade</li>
<li>slideInRight</li>
<li>slideInLeft</li>
<li>boxRandom</li>
<li>boxRain</li>
<li>boxRainReverse</li>
<li>boxRainGrow</li>
<li>boxRainGrowReverse</li>
</ul>
Shortcode examples:
<ul>
<li>[ngg-nivoslider html_id=”about-slider”]</li>
<li>[ngg-nivoslider title=”Hello” gallery=”1″ html_id=”about-slider” width=”200″ height=”150″ center=”1″]</li>
<li>[ngg-nivoslider html_id=”about-slider” directionnav=”false” controlnav=”false”]</li>
<li>[ngg-nivoslider tags=slideshow order=”random” effect=”fade” shuffle=”true” max_pictures=”12″ html_id=”slider” resizebg=”fdfdfd” resizewidth=”900″ resizeheight=”620″ resize=”3″ center=”1″ directionNav=”false” controlNav=”false” pauseTime=”10000″ animSpeed=”1000″ pauseOnHover=”false”]</li>
</ul>
<h3>To do</h3>
Feel free to suggest new features or things you’d like to see in this plugin!
<ul>
<li>Create some extra themes.</li>
<li>Scrollable thumbnails?</li>
</ul>

NextGen NivoSlider

This plugin does not taken title attribute in image which is bad for SEO. Also not working with updated version of NextGen gallery plugin. 

didn't work

The NextGen Nivoslider plugin allows you to create a NivoSlider, using images from your NextGen gallery, with a simple shortcode or widget.

GrandPlugins

Add Text and Image watermarks to your pictures and images easily.
The most advanced watermarking plugin for WordPress. 
The plugin offers watermarks templates for bulk watermarks and single editor for applying watermarks on single images.
<h3>Features</h3>
<ul>
<li>Watermark images using text and image watermarks, control the watermark position, rotation and repetition.</li>
<li>Customize the text watermark’s font size, font family and color.</li>
<li>Create Watermarks Templates for bulk watermarking.</li>
<li>Apply watermarks templates on bulk images selected directly from the media library.</li>
<li>Preview and apply watermarks on single image.</li>
<li>add custom fonts for text watermarks.</li>
</ul>
<iframe loading="lazy" title="WP Watermark Images - Create watermarks template" width="750" height="422" src="https://www.youtube.com/embed/W0VJE7WdirY?feature=oembed" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
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<ul>
<li>
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</li>
<li>
Apply unlimited watermarks You can add unlimited watermarks in watermarks templates or single-image Watermarks Editor.
</li>
<li>
Auto Watermarks Customize watermarks templates to be applied automatically on uploaded images, You can filter the auto-apply based on the image dimension [ max|min width and height ], the image filename prefix and the image uploaded location which it can be media or posts.
</li>
<li>
Watermarks Apply Type Choose to overwrite the image or create a new watermarked image.
</li>
<li>
Watermarks Apply Sub-sizes Choose which sub-sizes to apply the watermarks on.
</li>
<li>
Backups You can choose to create backup from images before applying watermarks in case of overwriting. You can restore original images either from image single image page or bulk-restore.
</li>
<li>
Bulk images Select Select images in bulk mode based on image’s post parent. You can select posts directly or based on filters [ posts availability – posts date range – posts authors – posts terms – etc…]
</li>
<li>
Auto Resize watermarks for each different image in bulk and auto watermarking.
</li>
<li>
Select watermarks Corner Offset.
</li>
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Dynamic Watermarks for WooCommerce and MasterStudy LMS.
</li>
</ul>
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Watermark Images, Stamp Images, WooCommerce Image Watermark, Product Watermark for WooCommerce

Add Text and Image watermarks to your pictures and images easily.

NextGen NivoSlider vs Watermark Images, Stamp Images, WooCommerce Image Watermark, Product Watermark for WooCommerce