Images for websites

[rpcrowe]

I send some images to be included on our Maltese Rescue California website.

I have been emailing uncropped full size JPEG images at 240 ppi. But these are very large files to email.

However, since the email will only accept 72 ppi and since a website can only use 72ppi (I think) could I sent uncropped images at 72ppi?

I like to send uncropped images because I don't know what cropping will be used on the website.

Along the same but, different lines... Our organization uses Drop Box to store the records on our dogs. That way, anyone in the organization can have access to medical records, release forms, microchip information and adoption forms for any of our dogs.

I am wary about loading Dropbox on my computer because it has tried to take over my wife's file system. I am wondering since I post my images on Smugmug, would that not be just about the same thing.

[victor]

Richard,

I am the digital image secretary for my local camera club and we use dropbox a lot for club competitions etc. We have set up dropbox for the club and for all our members and yes my PC is linked to this account for my sins.

I see all folders and images being downloaded to my PC….

1. How big is your drive ?
2. How do you share folders for the dogs records etc ? Careful set up et can help here by sharing folders as required ...

Yes I now hVE 4 GB for my local camera club on my pc… Pressing the delete button soon !

Regards

[royphot]

Hi.

The only time, I think, that DPI or PPI, or actual dimensions in inches, have any effect is when an image is being sent to a printer.

For Web use the important thing is the number of pixels. If your Monitor is 1600 x 1200, like mine, then an image which is 1600 pixel x 1200 pixel will fill the screen irrespective of PPI. Most webpages do not fill the screen from edge to edge, so it is sensible to use a smaller image, and when I was making webpages most images were sent at 800 pixel on the horizontal edge.
Some webmasters request images at a specific PPI, and in that case just do as they ask, in order to avoid any hassle, but the only important item is the pixel count.

Roy

PS I should have said that you do not need to crop an image to reduce the pixel count, just simply resize it when "re-sample" is ticked. Remember to change its name when saving so you do not reduce your one and only original in size.

[bambleweeney]

Agree with Roy on this one, for the web dpi makes absolutely no difference, it is the pixel size that counts. Try it yourself, save an image at 2dpi and another at 2000 dpi and their sizes and the on screen view should be identical. (ok, the 2000 dpi jpeg will be 2 or 3 bytes bigger - but that's all)

[dan marchant]

+1 to the above. ppi/dpi is irrelevant.
Look at the website and see what pixel size the images are. Then resize to slightly larger than that to allow cropping. That should save you a lot in file size.

[xpatUSA]

I send some images to be included on our Maltese Rescue California website.

I like to send uncropped images because I don't know what cropping will be used on the website.

Since they are your scenes and your subjects, would you consider cropping to your satisfaction? Then you can set your pixel dimensions to their needs and presumably their jpeg compression needs. I am in a similar but rather more domestic situation (wife's eBay stuff) and I dictate the cropping and send her about 960 wide for her further consideration. Usually she ups the brightness, doubles the contrast and sharpens quite enthusiastically . .

I am wary about loading Dropbox on my computer because it has tried to take over my wife's file system.

Now that brings back horrible memories of the "Organizer" in Elements 7 & 8 (which is why I reverted to Elements 6 on CD, just in case I ever waken the sleeping ravenous monster).

[revi]

@Richard: as has been said, DPI is irrelevant, the size in pixels is what counts. And there's a reason this site takes 700 pixels as largest dimensions
Also, do you trust the web site editors to crop in a way you find acceptable? (crop, not resize!).

Personally, I'd send jpg images cropped to my satisfaction and sized to fit in a 1500×900 box (easy to do with something like ImageMagick, including the output sharpening).
And if the site editor can't resist mutilating the images, well... (are they even allowed to do that w/o permission?)