On Mon, 10 Dec 2018 16:09:08 +0000, "J. P. Gilliver (John)"
wrote:

In message , Big Al
writes:
On 12/10/18 4:44 AM, JBI wrote:
Just what it says, I'm trying to find something portable and free
that would do a search of my hard drive the way Google does, where an
input image is given and then the search finds the same or similar
images. Thanks!
Now that would be cool. I know I have duplicates under different names.
You say "or similar", I'd just like to find a binary duplicate.

Al

I've found "Duplicate Image Finder", by Runningman software, works well:
you can set the percentage similarity you wish, including 100%. However,
this seems to have disappeared. I await with interest the results that
another poster in this thread reports from several other utilities that
person has found.

For binary duplicates, _if_ you know one filename, using the
"Everything" search utility, with no name specified, highlighting the
file, then sorting the result by the size column, will list files of
identical size adjacent to the highlighted one, so that their names and
locations can be seen, and then compared (if only with "fc /b").



A very good suggestion. That has to be *much* faster than comparing a
file with every other file on the drive, bit by bit.

On the other hand, perhaps a good duplicate finding program would
begin by doing the same kind of thing. I hadn't thought of that when I
posted my earlier message in this thread.