ThumbNails
Mapsoft ThumbNails, an Acrobat plug-in, is a powerful desktop publishing tool that embeds thumbnails within a PDF document. A thumbnail is a miniature view of each page within a document. Thumbnails can be displayed in the Thumbnails tab located to the left of the document window (called Pages... You can also use the ThumbNails tool to remove any existing embedded thumbnails from within a file. ... With ThumbNails you can export the images from your PDF into separate image files whatever the format (TIFF, JPEG, GIF, PNG).
http://www.mapsoft.com/Products/mapsoft_thumbnails_install1.zip - 5Mb - Download - Screenshot

PDF Thumbnail Generator
Create thumbnail for your existing PDF files. Thumbnail can be generated from a bitmap (. BMP) or a JPEG (*. JPG) or even a EMF (Encapsulated Meta File). When thumbnails are created and embedded into your PDF files, you will see the thumbnails displayed on the left column of your PDF Reader or... With this freeware utility, you can decide whether to show thumbnails when PDF file is opened.
http://www.coolpdf.com/pdfthumb.exe - 302Kb - Download - Screenshot

ReaThumbnails - thumbnails creator
Make your pictures and images ready for the web and create thumbnails for web photo albums, thumbnail galleries and slide shows with this easy-to-use wizard-style software. It converts many images at once from basic graphic formats to JPG and PNG, edits them and also creates an appropriate... ReaThumbnails allows create thumbnails with different properties using themes - sets of editing actions that can be saved and applied if needed. ... Every theme can have up to seven bookmarks with options of editing images for speeding-up and making easier thumbnail creation.
http://www.reasoft.com/downloads/ReaThumbnails.exe - 843Kb - Download - Screenshot

imgThumb
The imgThumb thumbnail creator program enables you to make a smaller sized thumbnails and HTML for your original pictures. It allows you to specify the width or height in pixels. By making thumbnails you reduce the size from megabytes to kilobytes!! It can also create a HTML file ready to... Output-files (the thumbnails) are always in JPG format. ... + Creates a HTML file showing all your thumbnails, optionally linked to the original pictures. ... cmd) to automate the creation of thumbnails. ... imgThumb can process pictures in the following formats: BMP, JPEG, PCX, PGM, PICT, PNG, TGA,...
http://www.gdps.dk/downloads/imgthumb.zip - 1Mb - Download - Screenshot

Media Resizer thumbnail creator
Create thumbnails and scaled copies of all your images with this powerful and flexible, yet easy to use utility. Thumbnails can be created in any existing folder or a new folder, and you can identify them clearly by adding a prefix or suffix to their name. ... Media Resizer supports both Image and Video Formats that gives you a wide variety of ways to create the coolest thumbnails. ... Creating image thumbnails has never been easier.! ... Ability to create video thumbnails makes this program unique.
http://www.mediaresizer.com/download/mrsetup.exe - 3Mb - Download - Screenshot

Adsen Thumbnailer
Adsen Thumbnailer is a simple freeware thumbnailer used to speed up the process of thumbnailing pictures within an entire folder. In addition, it allows you to rename these images (if selected) during the thumbnailing process. It also enables you to add a prefix to the thumbnails if you choose...
http://www.adsensoftware.com/thumbnailer/setup.exe - 632Kb - Download - Screenshot

Xentient Thumbnails
Xentient Thumbnails is a utility for replacing the generic icons of image files with thumbnail icons of the actual image. These thumbnail icons are much easier to recognize and they work everywhere icons are displayed, including on the Desktop, in Open and Save dialogs, and in Windows Explorer. ... The utility automatically generates thumbnail icons for most popular image types including JPG, JPE, JPEG, JP2, J2K, GIF, PNG, BMP, WBMP, EMF, WMF, PCX, PBM, PGM, PNM, PPM, RAS, TIF, TIFF, and TGA.
http://xentient.com/setups/thumbs.exe - 730Kb - Download - Screenshot

ReaThumbnails - thumbs generator
Create thumbnail gallery for many images at once. ReaThumbnails is a wizard-style utility to create a thumbnail gallery. It converts many images at once from the basic graphic formats to JPG and PNG and creates thumbnails. ReaThumbnails allows you to create thumbnails with different properties... Every theme can have up to seven bookmarks with options of editing images for speeding-up and making easier thumbnail creation. ... You can change them or create your own. ... The program has sample sets of editing actions (themes).
http://www.reasoft.com/downloads/ReaThumbnails.exe - 1Mb - Download - Screenshot

Media Resizer PRO thumbnail creator
Professional version of popular Media Resizer thumbnail generator has two main features for professionals: advanced thumbnail styles and watermarks. Thumbnails can be created in any existing folder, or a new folder, and you can identify them clearly by adding a prefix or suffix to their name. ... Media Resizer supports both Image and Video formats that give you a wide variety of ways to create the coolest thumbnails. ... Context menu integration, watermarks, advanced styles, smart cropping, rotate, easy format conversion with real-time preview of file size and quality, and ability to...
http://www.mediaresizer.com/download/MediaResizerPRO_setup.EXE - 3Mb - Download - Screenshot

STGThumb
Allows you to quickly make high-quality thumbnails. You can convert from several formats (AVI;JPG;TIF;PNG;BMP;etc). Outputs to JPG. On AVIs you get a thumbnail of the first frame. Option to auto-rotate images to get a better fit. Special effects on the thumbnails: Blur,Sharpen,Emboss, Fuzzy Blur. ... HTML page and HTML Slide Show generation.
http://www.stgsys.net/files/stgthumb.exe - 3Mb - Download - Screenshot