SageThumbs is a Windows Explorer context menu extension allowing Windows users to preview enormous amounts of image formats directly within Windows Explorer.
- - SageThumbs is the most popular Windows alternative to FastPreview.
- - SageThumbs is the most popular Open Source & free alternative to FastPreview.
The latest version 188.8.131.52 was released on May 9th, 2017.
XnShell is a free File Explorer extension that installs a number of image-related tools in the right-click context menu, including a thumbnail preview, image conversion to a wide variety of formats, image resizing, editing image IPTC...
Image Resizer for Windows is a utility that lets you resize one or more selected image files directly from Windows Explorer by right-clicking.
Image Resizer for Windows Features
PicaView is the simple, no-hassle image viewing solution. This is an add-on for viewing images in File Explorer that lets you right-click on an image file to bring up a miniature image and image file information.Discontinued
The product is no longer available on the official website, but you can still download it from OldVersion.com
Pictus is a fast, free image viewer that enables Windows to see thumbnails of supported formats, such as PSD. Give it a spin today!Discontinued
Last updated in 2008. See https://poppeman.se/pictus/
Assetizr will give you one tool for resizing images and optimizing them for web and mobile applications. It's a fast and lightweight, drag-and-drop desktop app with batch processing, smart naming and more.
FirmTools ShellExtension is a real handy freebie for Windows users.
Install this tool and it will add three new options to your menu when you right click on a picture file: convert, print, and thumbnail preview.
Converting supports most of the formats you will ever need: JP.
FirmTools ShellExtension FeaturesDiscontinued
Last Release date: Sep 07, 2005. See http://free.firmtools.com/shellextension.php
A powerful photo resizer and optimizer for Mac, allows you to optimize all your photos by 80% ~ 20% comparing to their originals while keeping their original resolution, quality.
- - Photo Size Optimizer is the most popular Mac alternative to FastPreview.
Context Viewer is an explorer extension in the form of a Control Panel applet that lets you preview image files and text in the right click menu. It can also display customized information about images and set hotkeys to enable or disable the preview along with a few more...Discontinued
The official website is no longer available, but the last version, 1.41, can be still downloaded from Wayback Machine
AhaView is a handy picture viewer and converter. It allows you to browse, view, organize and convert your digital images.
- - AhaView is the most popular commercial alternative to FastPreview.