Photo's

[ImLostAgain]

Is there or was there a site in which you posted a photo and it would recognise it?

[jno]

do it with Google Images

https://images.google.com/

Paste in a URL if it's already on the web somewhere or I think you can just click and drag a photo from your own files

[ImLostAgain]

Ooh that looks good. Thank you.

[Buenchico]

Further to Jno's post, if the picture is already on the web, right-click on it and select 'Copy Image Location'. (That's how the option is described in Firefox. It might be slightly different in other browsers). Go to Google Images (as per Jno's link), click on the camera symbol, right-click in the box, select 'Paste'and click 'Search by image'.

As an example, I used that method to answer a question here:
http://www.theanswerbank.co.uk/Competitions/Question1538263.html

If the picture is on your hard drive, open the folder which it's in and drag the image into the box on the Google Images website. (You'll need to make your browser window smaller, so that you can see your browser's window and the folder's window side-by-side). Alternatively you can click 'Upload an image here' and then browse your hard drive's contents as normal.

Note that Google Images seeks other examples of exactly the same image (or of very similar images) and can also offer a 'best guess' at what is shown in the picture but here's no guarantee that it will get it right. Your own avatar is simply identified as "scratching head confused" but looking at the links under 'Pages that include matching images' would be enough to identify the head-scratcher in question ;-)
http://tinyurl.com/j4qpsop

[ImLostAgain]

Brilliant.
Can it be done if there were more than one photo and they were all together? I was looking at a picture on the web and it had four people in seperate photo's but they were side by side. I clicked and copied on one of them but the copied image was all four.
Nitpicking I know but I was just wondering.

[Buenchico]

Separate the composite image into individual images and then search on each of them (as above).

If you've not already got Irfanview on your computer it might be a good time to install it:
http://www.irfanview.com/
It's a superb image-viewing program (about a zillion times better than the rubbish which Microsoft provides with Windows) but it also has some nifty editing functions.

Open your composite image in Irfanview. Use your mouse (with the left button held down) to draw a rectangle around one of the four pictures. Go to Image > Crop Selection (or, easier, just pres Ctrl and Y together) to see just the single picture. Go to File > Save As (or, easier, just hit S) to select a name and location for the single-image file. Repeat for the other three images and then proceed as above. Easy peasy ;-)

[Buenchico]

PS: I've assumed that you've already saved the web picture to your hard drive. If not, right-click on it to do so before following the instructions I've just posted.

[ImLostAgain]

Thats great, exactly the thing I'm looking for. Many thanks.

[Tuvok]

Another website to try is tineye

Somethime it will find the image when Google images doesn't and vice versa