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Let’s say you’ve got a bunch of pictures in your digital camera which you want to transfer to your PC and store them securely. When you transfer all the pictures you’ll find that the file names are a combination of letters and numbers which do not tell anything about the image. So what do you do ? Obviously renaming them is the solution. But doing it in the conventional way (one at a time) is time consuming, in fact very time consuming if you’ve got 200 or 300 photos. This is where ReNamer comes into the picture.

ReNamer is a windows-only freeware which lets you batch rename files quickly and easily. Sure there are many software available which do batch renaming of files but ReNamer has some cool features which should make it one of the best, if not the best. Since it’s available for free, it becomes a more likely choice.

Once you download and install ReNamer, you get a window which is partitioned into 2 panes – the upper and the lower pane. As you can see in the screenshot below, the upper pane is used to add a rule and you can drag and drop the files which you require to be renamed in the lower pane. You may also add files or folders by clicking on the add files and folders in the horizontal menu bar at the top.

The option of adding rules is what makes ReNamer unique
. It’s in fact a very convenient way to rename a bunch of files and also gives you more freedom to customize the renaming process. For example, I’ve got a bunch of images which are the screenshots I’ve used in my articles here at MakeUseOf and I’d like to rename them by adding the word MUO as prefix to each of those images. As you can see in the screenshot below, I click on the first rule which says ‘ Insert ‘ and then I make the corresponding rule.


This is just one of the rules from the long list of rules which you can create to rename the files. You could delete or replace extensions, strip the filename of certain digits or symbols (like #,&,*, _ ) or add options to serialize them. If you can code then you could even add your own scripts.


Once you have made the rule, it shows up in the upper pane. Then you can drag the files in the lower pane and click the preview button to see what will the new names look like. And if you are satisfied then you can hit the rename button to complete the process.


It also has more features like filters for including certain file types and avoiding others (like system files), different export and import options for files and also more options to customize the look and feel of the columns. Like in the screenshot above, the renamed files show in red. That’s not the default view. It’s the customized view which I got by clicking ‘ Highlight Changed Names ‘ in the options.


Overall, this is certainly a handy tool for renaming files in batches. If you know about any other tool which you think could do the job better then let’s hear about it in the comments.

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