After you photograph your painting - Image editing and processing

Image Dos - Things to do after you take your photo

Step 1 - Rectify image distortions

Unless you have Photoshop on your computer or you use open source image manipulation software like Gimp, it’s unlikely that the image manipulation software that came with your camera or pre-installed on your computer will be able to correct distorted images - those where the sides of your painting aren’t straight and parallel.

Instead, use something like, a free online service that provides extensive image editing functionality.

This image is an example of adjusting an image that wasn't taken square on, that also included a frame.  The straighter the sides are (i.e. not bowed) the easier the adjustment process is.

Step 2 - Remove unwanted background

This step entails cropping the image so that it includes only the painting itself. There’s no need to crop exactly to the edges of your painting - cropping a small portion of the image at the same time can help get rid of any residual distortion.

Your pre-installed photo editing software might well allow you to do this, but it’s probably simpler to use something like, a free online editing tool.

Step 3 - Adjust the image resolution

The goal here is to end up with an image that’s small enough to load quickly when viewed on a mobile phone or other portable device, yet large enough for a potential purchaser or art show organiser to view detail.

Modern cameras and mobile phones take photographs that are far too large to use on the Internet. It’s likely that you’ll need to resize the image before you put it on Gallery 247.

Image size is measured in pixels. A size less than 800 pixels on its smallest side is likely to be too small to convey a proper sense of your work, and a size greater than 3000 pixels on its largest side is unnecessarily large.

An ideal size is from 2000 - 2500 pixels on the image’s longest side.

Always perform other corrections, especially cropping, before you re-size. If you re-size then crop, you might well end up with an image that’s too small.

Some pre-installed photo editing software will allow you to do this, but it’s likely to be easier to use something like to resize the image while you’re doing other editing.

Step 4 - Adjust the image quality

Most cameras and phones save their images at high quality. If you’ve taken the photo at maximum quality, the file size will be unnecessarily large.

The perfect quality setting is High or 80%. If you’re using, you can select this quality setting before you save the image back to your computer.

Step 5 - Save your edited image

When you save the edited image, it’s advisable to save it using a different name than the original, just in case you need the original for other reasons.

A simple technique is to add “G247" to the beginning of the file name, so that you can instantly see which ones have been modified.

If you’re using, insecure and unwanted metadata will be automatically removed when you save the picture. There is more information on image security and privacy here.

Step 6 - Check the image file size

A file that’s too large will result in slow download times. Factors that lead to overly large files are:

  • Too high a resolution. Keep to 2000 - 3000 pixels maximum on the image’s longest side.
  • Too high a quality. 80% is perfect.
  • Metadata content.
  • Multiple thumbnails could well be embedded in the file, along with the original picture. Some devices automatically save multiple thumbnails as part of the actual photograph, and this can result in a file that’s more than double the size it needs to be.

A good file size to aim for is between 250 kb and 1mb.

If you’ve been editing your images using, your resultant file sizes might well be satisfactory. However, you might need to reduce the file size of an existing image.

A really useful free online utility,which typically reduces image files by 70 - 80%, will solve most of your file size problems.

Step 7 - Upload your image to Gallery 247

Now you’re ready to load your images into Gallery 247 - assuming, of course, that you’ve avoided the traps below.

Image Don’ts - What to avoid after you take your photo

Don’t use any "Save for Web" or "Save for email" options

Cameras, image editing software and phones sometimes offer you the option to reduce file size by allowing you to save the image for use in an email or for use on the web.

These will almost invariably result in an image that’s far too small to present your painting properly.  It's also likely to result in a poor quality image, especially when an art lover wants to look more closely at your painting.

Don’t try to create your own thumbnail images

Gallery 247 is extremely intelligent - it will automatically create thumbnail images as and when they’re needed. You can safely disregard well-meaning advice from web developers or budding IT experts about the need to create thumbnail images.

Do not simulate a room with your image in it

Gallery 247 has its own automatic View At Home image generator, which will have more features added in the near future.

If you use one of the several image editing systems that allow you to place your painting in a room and upload that as the photo of your painting, Gallery 247’s View At Home option will appear as if your painting is of a room or that are trying to sell furniture.

Likewise when a potential purchaser zooms in to get a better look at your painting’s detail - all they’ll see is a more detailed view of the computer-generated room.

Gallery 247’s smart colour filter will also take into account the dominant colours of the pretend room, which will lessen the chances of a potential purchaser locating your work on the basis of preferred colours.

Stick with unembellished images of your painting.

Do not add coloured borders to your images

When you add colour borders to the image of your painting, Gallery 247’s smart colour filter will think it’s part of the painting. As with room simulations, a border colour is likely to suppress real colours in your painting, thereby lessening the chance of your painting being found.

Similarly, when a potential purchaser wants to view your painting at home, you don’t want your artificial border to appear as if it’s part of the painting.

Don’t embed copyright notices or sales information into your image

Embedding a copyright notice into your image detracts from the presentation of your painting, as well as being a waste of time because Gallery 247 automatically assigns copyright to every one of your paintings.

Embedding sales information, such as your studio name or web address cheapens the photograph, looks unprofessional, lessens its appeal and is subject to removal by Gallery 247.

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