Batch processing

The batch processing feature is especially useful if you want to repeat the same operation again and again... Batch processing allows you to:

For any of the above, you specify separate source and destination folders as your input and output. There are several advantages to this, mainly that your original photos are not overwritten.

The Batch dialog, available from the File menu, is used to perform all of the above operations.

As a pre-requisite, you have to define a specific Source Folder for any batch processing operation, or if converting photos to a different file format.

A Destination folder can optionally be defined, creating new files in that new location.

  • If you don’t select a destination folder, the source files will be processed and your original files will be overwritten—exercise caution with these settings!

To save you time, PhotoPlus will remember previously selected Source and Destination folders while PhotoPlus is loaded.

You may be wondering how batch processing affects photos currently loaded in PhotoPlus. PhotoPlus’s batch processing only operates on source folder contents and not on the currently loaded photos themselves—so these remain unaffected. However, as a visual check, you will see each photo temporarily being loaded and converted one-by-one in the Photo window during batch processing.

Using macros*

*Not available in PhotoPlus Starter Edition. Why not upgrade?

Macros can be applied to a batch process easily (via Use Macros). PhotoPlus doesn’t differentiate between pre-recorded and recorded macros. If available, they are selected from the same Category and Macro drop-down menus equally.

To apply a macro in batch processing:

  1. Choose Batch... from the File menu to display the Batch dialog.

  2. Check the Use Macro button.

  3. In the Category and Macro drop-down menus, select the macro category then the macro itself, either a preset macro or one you’ve recorded yourself.

  4. In the Source Folder box choose the Browse... button and navigate to the location of your source photos.

  5. Do the same for the Destination Folder, where we want to save the batch processing output. It's best to navigate to a separate folder from the one containing your source photos by using the Browse... button.

  6. Press OK.

  7. After a photo is processed, you may receive a warning message. You'll see this message frequently when carrying out batch processing. As the PhotoPlus file may contain features (e.g., layers) that cannot be saved in the required format, the option exists to also save the photo in its native format, i.e. as an SPP file. Selecting Yes will prompt you for an SPP filename in a Save As dialog. Select No for each photo if you don't want to save in native format.

Your converted photos will be stored in the destination folder.

Changing file type

It is possible to convert your photos into one of many different file types available in PhotoPlus (via Change File Type). In addition, conversion options such as bit depth, palette, dithering, compression/quality, and matte can be selected depending on the file type.

File conversions can be carried out independently or in conjunction with macros* (the dialogs shown opposite converts each image to 24-bit PNG format).

*Not available in PhotoPlus Starter Edition. Why not upgrade?

To change file types:

  1. Check the Change File Type box, and specify the graphic file format for export. Use the Options... button to set bit depth, palette, dithering and compression/quality for your chosen file format, if necessary.

  2. In the Source Folder box choose the Browse... button and navigate to the location of your source photos.

  3. Now for the Destination Folder—we want to save the batch processing output. Navigate to a separate folder from the one containing your source photos by using the Browse... button.

  4. Press OK.

Changing image size

As well as changing file formats, PhotoPlus can use batch processing to alter image sizes in bulk (using a choice of resampling methods) via Resize Images. Typically, this is a quick and easy way to make your images scale to a maximum image dimension (height or width) with aspect ratio maintained, to absolute image dimensions (with stretching/shrinking to fit), scale by percentage, and scale by resolution (DPI). Use for sending your digital photos via email or perhaps to publish your images online via a website.

  • Check Maintain aspect ratio then enter values for Max Width and Max Height to scale to maximum intended dimensions while preserving the image's original aspect ratio.

  • With Maintain aspect ratio unchecked, enter values for absolute Width and Height to make images of a fixed size. As aspect ratio is not maintained, images may be stretched horizontally or vertically.

  • Change the units of measurement to percent, then enter identical percentage values to scale Width and Height in proportion (maintain aspect ratio); otherwise, different values will stretch images horizontally or vertically.

  • Enter a DPI value to alter the original resolution of the images.

  • Pick a method from the drop-down list. Use Nearest Pixel for hard-edge images, Bilinear Interpolation when shrinking photosor Bicubic Interpolation when enlarging photos. The list is ordered according to processing times (fastest to slowest).

To change image resolution:

  1. Choose Batch... in the File menu.

  2. Check the Resize Images check box, to switch on image resampling.

  3. Set a measurement unit for resampling. Choose from pixels, inches, centimeters, or percent.

  4. In the Width and Height boxes, enter values for both.

  5. To preserve image proportions, check Maintain aspect ratio. The input boxes change to allow Max Height and Max Width to be set. If unchecked, absolute value for Width and Height can be set, i.e. all image will be of the same size irrespective of original image size.

  6. (Optional) Enter a DPI value into the Resolution box.

  7. (Optional) Pick a Resampling Method to be different from the default Bilinear interpolation method (see above).   

  8. In the Source Folder box choose the Browse... button and navigate to the location of your source photos.

  9. Now for the Destination Folder—we want to save the batch processing output. Navigate to a separate folder from the one containing your source photos by using the Browse... button.

  10. Press OK.

Changing file names

It is also possible to define a Destination File Name for the files to be processed by selecting the dialog's Modify... button. In the File Name Format dialog you can select new file names that can be built up using the current date/time, document names, sequence number, or text string, individually or in combination.

To change file naming:

  1. Select the Modify button adjacent to the File Name: box. The File Name Format dialog lets you assemble a file naming structure in the Sample Name box (by selecting and configuring tokens from the list).

  2. Select a Date, Document Name, Sequence, Text or Time token from the list of Tokens and click the Add button; Sequence and Text can be set to your chosen starting number or text string, respectively. The Sample Name box reflects your chosen file name structure.

  1. Press OK.