Best Free Digital Image Viewer

Zoner Software are the developers of one of the commercial programs I've been using for a long time to view and manage my huge collection, so when I saw they released Zoner Photo Studio Free, I guessed it was going to qualify high enough for its inclusion here. It certainly did, but who knew it would climb up to be the Top Pick! It brings to my mind an inevitable remembrance of ACDSee in several aspects, but this interface looks more attractive to me. Actually, it appears very professional and can even seem a bit daunting with all those menus, tabs and icons, but it's very intuitive and tooltips show up for everything. Comprehensive help and links to video tutorials are provided as well.

It's organized into a manager (a thumbnail view with a folder tree and general information), a fullscreen viewer and an editor, which is quite stripped down compared to the paid version but still very functional. ZPSF generates thumbnails in a blink, much faster than any other I've seen, and general speed is outstanding, though the zoom system should be more flexible in full screen. There's a powerful search with many filters, a lot of display options and full shortcut customization. The functions are too many to be mentioned and generally very useful, but a couple of them alone make it worth using the program: one is the ability to temporarily rotate pics and the other allows to straighten them by drawing a horizontal line. Apart from this one, the editor has a variety of tools like a handy clone stamp, a funny morph mesh and great effects that can be applied on selected areas. You can also make automatic backups of your photos, organize into albums, geotag, build calendars, and a lot of other things. Moreover, it reads many formats, including RAW, and writes to the ten most commonly used. It supports video from within the program.

On the downside, ZPSF takes over 350MB on your disk, an awful lot more than any of the competitors in this review, and it needs 1GB RAM. Color management isn't supported either. Some features such as panorama stitching and 3D photo creation that were available in previous free versions have been removed now in v.15, but v.14 can still be found on some sites like Softpedia and it might be better to stick with it. Advanced batch processing options are only available in the paid version, except for renaming, though most individual operations can be carried out on more than one file at a time by selecting a number of them in the manager, opening the specific dialog and then clicking 'Apply to all'. The download link on Zoner's site points to Cnet, which can be objectionable for their download policy and their wrapped installers. Although Photo Studio might be too much for the needs of average users, it's undoubtedly an excellent program with lots of possibilities for those willing to take advantage of its many features.
 

XnView used to be my Top Pick till the release of Zoner Photo Studio Free and I would really keep it as such if there could be two of them. It's probably the most versatile of all viewers because it can read 500 types of graphic files and convert any of these to more than 50 formats. It displays images very quickly and these may be viewed in full screen, as slideshows or as thumbnails. It's quite capable at processing images, too; you can rotate, crop, resize, adjust brightness and color, apply filters or effects, create a web page and much more. Most of these operations can also be carried out as a batch, which is ideal for converting or processing multiple images with custom adjustments.

The thumbnail window can fit your preferences with several layouts and sizes; this is especially useful when displaying panoramic images in preview mode (see screenshot). It offers nearly instantaneous hotkey and wheel zooming, and dragging the image around at any zoom level is perfectly smooth. It also allows having several images open at the same time and even running multiple instances of the program if you like to browse in different windows. It supports drag and drop, color management (with slower loading times), geotagging, lots of plug-ins, is available in 44 languages and has full cross-platform support, including Mac and Linux (unlike its competitors reviewed here). A heavyweight champion.
 

One of the best choices is the classic IrfanView. This is a first-class product, but one for which I have mixed feelings. It's an amazingly capable application and quite fast at displaying images. It offers plenty of functions for editing, converting, batch processing, slideshow exporting, etc. and supports almost any graphics plug-in (including one for color management). Some of the features (its resizing algorithm, for instance) are outstanding and even rank above a big fish like Photoshop. It's a small download and it takes a mere 2MB on disk.

But, although many users love it, it just doesn't work the way I'd like it to. It's quite simplistic, but not really intuitive and the interface has been almost the same since early versions. As a personal "inconvenience" I'll say wheel zooming requires a press of the Ctrl key, RAW support needs several different downloads and installs for plug-ins or dll's, and I don't see the point in having a separate module for thumbnails. This, however, may be exactly what others prefer and the same applies to the interface, which looks a bit too outdated to me. But, obviously, Irfan is a real winner. (The main download link on Irfan's site points to Cnet, which can be objectionable for its download policy and the unwanted additions it installs sometimes. Some alternatives can be found by clicking on "Other download sites" on the same page.)
 

FastStone Image Viewer is another excellent choice. There are various reasons to choose this, but perhaps the main one is its superb interface in full screen mode, with different pop-up panels appearing when the mouse pointer reaches any side of the screen and disappearing when it's withdrawn. You can easily access nearly every function of the program from this window with no other element disturbing you until you decide it with just a mouse move, including a very handy thumbnail slider to browse your images. Even the smallest menus or panels in any of the modes are clear and well designed, and there are several skins available.

Aside from the usual wheel zooming, the zoom system has a very clever feature: it magnifies to a custom preset level with just one click, lets you pan through the image while holding the button and returns to full view when it is released, something really useful to check out sharpness or detail in a photo. Average files are displayed quickly and their thumbnails are generated promptly. But it's slower showing bigger files (>20MB, depending on the format and resolution) and others perform much better in this field, though that won't be an issue for most users. It may be a good idea to disable the preview pane in the thumbnail window to speed things up. There's also an option to use color management, but it increases loading time. Another outstanding plus is the batch processing options, quite extensive and really easy to set up and run. A few useful editing features have been added in version 4.3, including curves, levels, lighting, unsharp mask, clone and heal. It also supports all major graphic formats and popular digital camera RAW formats as well, and offers an excellent cropping module, great slideshow capabilities and GPS location with Google Earth. Much to like here.
 

I can recommend another program, after most of my initial objections were overcome by the evidence and the author, who showed a very positive response to my feedback. This special mention goes to WildBit Viewer, an outstanding application that can rival the ones reviewed above in many aspects. In spite of some minor concerns about speed, the program is highly manageable and functional enough to earn the respect of many users.

Apart from the usual features you'd expect, it offers small-increment wheel zooming, a very intuitive image editor with a full array of editing tools, a superpowerful search function that can track any metadata or EXIF information, an excellent geotagging tool to embed geographical co-ordinates in the files, and the most comprehensive help you can imagine. There's also a function for side-by-side image comparison with difference calculations, and a highly customizable slideshow mode. It supports around 70 formats (no video) and runs on Windows 98SE through W7. From version 5.4 on, it includes thumbnail generation for RAW files, aspect ratio information and other improvements. WildBit Viewer is a very competent alternative.
 

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I've tested quite a few other applications (too many to be mentioned), but none of them made it to the top. That includes all of those suggested by readers. When this was the case, I usually replied with a post in the comments section with my reasons. Maybe your favorite program is among them, but please don't hesitate to submit any product you think might deserve a try. There are some decent ones and even Windows' built-in viewer performs acceptably when browsing through average images, although it's very limited. One would expect some improvement over the old XP concerning this, but it's disappointing to find out neither Vista nor Windows7 are significantly better for the task ten years later. Anyway, it wouldn't be fair to end this review without mentioning some other freebies that offer quite remarkable features. (Thanks to those anonymous visitors for letting me know.)
 

 

Users who just want a simple replacement for the default Windows photo viewer have a very good alternative with ACDSee Free, which was first released in 2012. Its commercial sibling has long been one of the highly regarded applications in this area and the free version is on par with it in terms of speed, which is impressive. Almost no other program can display pictures as quickly as ACDSee, no matter the image size. For this alone it deserves a place in our review. The interface is simple and clean, and its default gray color is appropriate for a correct viewing experience. The mouse wheel can be used for zooming by pressing the Ctrl key, though its primary function is to select the previous or next image in a folder. Double click displays a full screen view and a few keyboard shortcuts are available for navigation. It supports 11 common formats —including animated GIF, but not RAW or PSD—, and can convert to 8 of them using the 'save as' command. Other functions include rotate, copy, set as wallpaper and a very nice group of printing options. And that's just about it!

 

Speed is the strongest point in its favor but if it hadn't been for that, probably ACDSee Free wouldn't be listed here because there are no other special features to talk about. It's just a sequential viewer like many others and it relies on Windows explorer to access folders and images. I miss some more customization or any kind of sorting options. For my review I usually test the programs on different systems, machines and screens. In this case I must point out the unsatisfactory quality of ACDSF's image rendition for JPGs on all tested environments. The problem isn't evident at closer zoom levels, but when fitting the whole image to the program window it appears a bit blurry, but the TIF and PNG versions for the same JPG files look nicer and crisper. A personal inconvenience is that the Esc key always closes the program. On another note, the installation occupies nearly 30MB on disk, which is a remarkably high amount for such an apparently simple program. Nevertheless, all these drawbacks could be considered as minor. I know simplicity and good speed are what many users really want for their needs, and ACDSee Free is a champion at both.

 

 

During the past years of writing for Gizmo's Freeware I have been reluctant to include Picasa here because I (still) think the main program isn't actually a good viewer. Many times I was asked why and I gave a lot of reasons. But then one day (thanks to our reader Kurt B) I discovered Picasa contains a separate picture viewer that can be used as an independent program. And it's quite good, so I had to change my mind. It's nice, fast and simple, and in this respect it could be considered as an ideal replacement for the default Windows' photo viewer. It doesn't provide a lot of features by itself, but it can be combined with the main sibling app to obtain good functionality when it comes to editing and the rest of the many features that it offers. It reads a lot of formats (including RAW and PSD), wheel zooming and panning are smooth and its image quality is excellent. The rendition of RAW files is one of the best I've seen, although many times one would prefer to be able to check out the embedded JPG for an idea of the behavior of the camera.

 

There are just a couple of "major" cons I can find with Picasa. One is the fact that the image is always smoothed when viewed at close zoom levels exceeding 100% and the individual pixels aren't shown: this isn't good if you want to appreciate the real quality of an image when inspecting it for artifacts such as the ones that often appear in JPG pics. The other inconvenience is that Picasa doesn't make it really clear you can use this viewer separately, and subsequently you could think that you'd have to make do with the one in the main program, which isn't half as good. I apologize because that's exactly what happened to me for quite a long time.

 

 

One of our users suggested cam2pc and, after giving it a try, it has proved to be an excellent program in many aspects. As the name suggests, cam2pc provides a handy way to download pictures and videos from your digicam to your drives, allowing you to use lots of options for renaming, saving, etc., and has specific support for the widely used Canon EOS cameras (separate download). The interface is intuitive and easy to use, with a folder and thumbnail view that recalls FastStone. As with this, I recommend to turn the preview panel off, though thumbnail generation is really fast. Actually, speed is outstanding in almost every aspect of this app. The feature that impressed me most was its ability to quickly display LZW-compressed TIFs, something unusual in its competitors, although these perform better with Photoshop PSDs.

 

The only reason why I don't include cam2pc along with the top programs is that the freeware version lacks quite a lot of features that can only be found in its commercial sibling and which the others offer for free. But I guess most users could perfectly do without those.
 

 

Imagine is a very fast viewer vaguely resembling Irfan in its simplistic interface, though the number of features is far more reduced. Wheel zooming also needs pressing the Ctrl key. Several instances of the program can be open at the same time, it lets you customize various mouse modes with different configurations and select any of them instantaneously to fit your workflow, allows frame extraction from animations, reads inside zip, rar and 7z archives, has multilanguage support and is portable.

 

On the downside, it's quite limited in other areas; for instance, the editing and batch processing options. No RAW or video formats are supported. Sometimes a few Photoshop PSD files can't be read and an 'out of memory' message appears when trying to open them, irrespective of their size and my lots of free RAM and processing power. But the app is an AWSOME performer with the PSDs that load properly and displays them nearly instantaneously, once the thumbnail has been generated. This is something I haven't seen in any other free viewer, and only one or two commercial programs can boast similar results!
 

 

Pictomio is a good representative of the recent trends in this category, which pay greater attention to "fancy" interfaces and presentations to improve user experience. The main drawback with this is the usually high resource consumption and graphics card requirements, and the program is no exception, as it uses DirectX hardware acceleration. I'd say it is mainly geared to organizing, with a great number of options for tagging, metadata editing, rating and grouping, but it performs very well as a viewer, too. It's really fast once the thumbnail indexing has finished and displays an image preview instantly, and you can zoom in and out to any level. It supports some video formats as well. The interface is really nice and its many tabs show a lot of information.

 

Pictomio, however, is not intended to edit and there are no options for this other than lossless rotation. There's no support for RAW, PSD or animated GIF formats either. Moreover, indexing should be faster and it fails to generate a thumbnail for some really big files, but the picture is displayed perfectly if you click on its blank rectangle.

 

 

Although their names look nearly identical, Imagina has nothing to do with Imagine, reviewed above. Actually, that's where similarities end. This application ('a next-generation image viewer and editing tool', the developers claim) is a perfect example of the new concepts based around 3-D technology, but much lighter on resources than Pictomio and others of this kind. Browsing speed isn't as fast either, even compared to "normal" viewers, and this is especially noticeable with bigger files. For instance, when opening my EOS 7D's 18-megapixel JPGs the program clearly stays behind the top performers, though this should mean no issue for average users, as their files will be half that size or less, typically.

 

There may be some things I really miss (more customization for certain basic aspects, a built-in folder tree, support for PSDs, more straightforward management of some files like TIFF, etc.) and many other reasons why my workflow as a photographer won't (yet) fit what Imagina proposes at this seemingly early stage in its development. But photo pros are only a few among the vast lot of digicam users who just shoot JPG. And these will love it! I do love it too, believe it or not. Its absolutely outstanding features have captivated me. User experience is excellent and no other viewer I've seen shows that image quality or that zoom and pan smoothness. Both 2-D and 3-D graphics are amazing and even videos can be watched in this environment (with zooming and panning!). It offers state-of-the-art RAW support by using David Coffin's DCRAW along with its own algorithms, top quality editing functions, real color management and some useful tools, like the 'straighten picture along a line' that many users have been craving for. So many good things make it at least a must-try.

 

Well, just in case it's not clear, I have no connection at all with the developers. It's obvious I like Imagina but, as you can see, it hasn't reached a place at the top. It might one day, though, if the already good work keeps improving and the drawbacks I mentioned above are ironed out. They are very near. (Requires .NET 3.0 or higher)

 

 

After some debate in the comments section I've decided to mention FastPictureViewer, but just because of one single feature. This claims to be (and probably is) the fastest viewer ever, especially indicated for quick browsing and culling. Like Pictomio, it uses hardware to speed things up and requires a lot of system resources and graphic capabilities. It has a nice interface as well. Anyway, the program offers very few functions once the initial trial period expires and actually becomes limited to viewing JPGs and not much more than screening and tagging. It does support full color space awareness, though, and the unbeatable speed is a very strong argument in its favor.

 

 

Finally, one of our site users, Mythril, suggested two programs which work with a very different approach, but with a special focus on speed. These are Vjpeg and Osiva. I just quote Mythril's comments because they are right on spot (original 06/02/09): "Both work by opening images in a borderless window that you can drag around and zoom in/out at will, practically without any lag, and you can open as many images as you want at the same time. Both programs load very quickly, but don't have any features to speak of. Another drawback is that there doesn't even seem to be a way to cycle through images in a directory... Osiva is slightly better in that you can easily drag and drop a bunch of images and have it open all of them for a superquick overview". I'll add they support very few file formats and are a bit awkward to use, but Vpej and Osiva are quite different from what I had seen so far.

 

Another reader, Bziur, also put forward First Impression, which works in a similar way without an apparent interface, just by using right-click menus and offering pretty much what the name of the program suggests.

 

 

This impressive entry in the Wikipedia features a chart comparing a considerable amount of free and commercial image viewers. Most of these products are also given detailed individual entries and include links to their websites.

 

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