Resizing an Image?

[Thanos1952]

Operating System

1. Windows 10

I could REALLY use some help here. I'm not very competent at "image resizing".

I edited a landscape image using LR on my Ipad. I like the way everything turned out. However, the File Size of the edited image is 43.5 MB (pretty huge).
I went to post/share the image to a photography forum and it rejected it due to the file size. Their maximum file size is 1.4 MB.
Currently I'm in LRC on my Desktop and this is where I get LOST. I don't know how to properly "resize" my image to a specific target size (in this case 1.4 MB) as well as I don't know how to resize my image if I wanted to have a larger print (i.e. metal or canvas) made. I'm sharing the details here of the image size of the original image and also sharing the "image sizing" window from LTC as well as the "file settings" window. I have no idea if what I'm doing in "image sizing" and "file settings" is correct or not and would appreciate any tips you can provide. Thank You.

 

[Johan Elzenga]

The 43.5 MB is most likely the size of the original. When you export an image as JPG it becomes much smaller, because JPG is compressed. In the export dialog, do not check the HDR option (unless they are HDR and the forum supports that, but I doubt that). In the export dialog you can specify the maximum file size for a JPG image (see your screenshots). You can also define whether or not metadata will be saved on export. Do not include all metadata, because they can be quite large. This might already be enough without resizing the pixel size, but you can also do that (you do not need full size images for posting in a forum) to get less compression, so a smaller image with better image quality.

If you want to export a version for printing, export again with different settings. You won’t have that 1.4 MB limit this time, so you don’t need to resize. Most print services accept file sizes of 10 MB or more.

 

[Gnits]

The easiest way to generate images for email / social media is decide on the number of pixels of the longest side.
I used 800 pixels at one stage.. upgraded to 1600, then 2048 and now 2500 pixels as the internet has allowed bigger email attachments.

I then set the file type to be jpg, export with sRGB colourspace. Set the compression to 80% or 8.

I export my images to a subfolder of the original file (in this case I would call the folder EmailWeb .. but you might want to pick a specific folder location, especially if exporting a collection from different folders.

I set this up as a preset.. so I can reuse it consistently.
Do a test for say 2048 on the long side. If the resultant images are too big then change then reduce the number of pixels on the longest side side.

Most of the time my jpgs are from 200kb to ,say, 1.5 MB…

I have separate presets for other use cases. If (for example, exporting for a printing service I will export 16 bit tiffs, with AdobeRGB colourspace profile with all pixels included. These will be very large files and you will need to use WeTransfer or Dropbox or follow instructions from the printing service to transfer over the internet, as they will be too large for email.

As Johan has mentioned.. be careful re metadata to include as the metadata may be larger than the pixel content of the image in some cases.