How can I convert low res photos to high res to put on a website

Sorry but you are simply a troll and have not idea what you are talking about or doing - everything you post is wrong adn you are misleading users who actually want help rather than having trolls corrupt the correct answers with totally inaccurate posts

The Users opinion or the help I've provided vis-a-vis the help you have provided (76,425 va 180) says it all

Please restrict your posts to things you know and understand (which apparently based on your many incorrect posts includes nothing about iPhoto, Photos or digital photography)

Trolls are not welcome here

LN

Improve? To my eye they both awful just differently so. One is blocky the other looks out of focus as the pixels are smeared into each other. If you're happy with that, good for you, but there's no way I would call that better or an improvement.

Basically, it proves your point as you have your standards, it demonstrates mine as I have different standards.

What size are your current images?

Just in case, complement of information:

after clicking "OK" in the "Adjust Size" dialog,, before closing "Preview", click "File" up there, then "SAVE AS" ( this will produce a new photo, leaving the original untouched ).

In the opening dialog, add a letter ( for instance "A" ) at the end of the name ( since this is a new photo that we want to sit right beside the original, if you choose to reintroduce it into iPhoto, and then into the same Event ) , and change the destination to "Desktop" ( ease of access , and from where you can drag-drop the pic back into iPhoto later ).

"Format" should be "JPEG", and "Quality" set at "Best".

Afraid not. Essentially you can't add data that's not already there.

No - you need new photos - you can reduce photo resolution but you can not increase it

LN

Just remember the quality of the image will degrade.

Just remember that for versions of OS X later than 10.6 that whole post is meaningless.

terence,

you write " Just remember the quality of the image will degrade ".

In fact, when performing an upsizing on a lo-res image, there will be some gain in the visual quality of the photo...

OK, you try it and post the pictures so we can all see

csound

i tried out all this before posting. Why don't you..?

Well that quite demonstrates my point very well:

Just remember the quality of the image will degrade.

what everyone here will remember is that the quality of the image improved 🙂