Pilfer is a handy Firefox extension for exactly that purpose. It basically tries to find additional images hosted under the same directory structure by scanning a specific range. If you find the image DCS0001.jpg you could for instance make it scan the next 50, 500 or even 5000 numbers for additional images. The extension would then scan from DSC0002.jpg to DSC5001.jpg if 5000 would be selected as the range.

Even better, you can use the extension to search forward, backward or in both directions. But finding images is only half of what Pilder is all about. The Firefox add-on furthermore displays its findings on a new page in the browser, and with that I mean that it displays all images that it has found on that page.

That page is a basic image browser that displays all images that have been found during the scan. The thumbnails on that page are clickable and the image browser displays them in full mode, along with options to browse to the next or previous picture in line.

The images that are displayed can be saved directly to the local system as well. Pilfer supports both number and alpha ranges, and the creation of custom strings that are then available from the right-click context menu. Very handy for adding digital camera specific file name strings to the Firefox extension.

Another feature that may come in handy is that you can manually use the pilfer command in front of urls to search for images, e.g. pilfer url with options to use place holders in the form [x-y] in the url. The Firefox image extension scans the selected range and displays its findings on the result’s screen.

Pilfer is a handy extension for Firefox, especially for users who go image hunting regularly and users who need to browse photo directories.

Image Navigator makes image browsing in Firefox comfortable. It is not the perfect solution and there surely will be some websites where the extension will fail to work properly. The reason for this is because Image Navigator is working with url sequences trying to find the next image or another folder containing images.

The extension adds one button to the Navigation Toolbar in Firefox which opens up a menu with two options that can also be selected with hotkeys. Next Image or Previous Image are the two choices offered. The hotkeys for those two functions are [ALT W] or [ALT Q].

Image Navigator prefetches the next image if one is found which means it only takes a fraction of a second usually to display the next image in line. The Firefox add-on is experimental meaning that it can only be downloaded after logging into the Mozilla website.

Update: Image Navigator has been discontinued. We suggest you take a look at the Image Tools extension instead which offers similar features and a lot more.