I managed 7064

Fun, but with games like these usually you add time to the timer for every correct guess. Which I feel is an easy improvement.

Good game and concept, but when I click off of the game, it doesn't let me type and I can't click on the box to type.

This was actually rather good. A couple of issues though. I clicked outside of the window and couldn't click the text box in the game again. This happened several times. As the pixels get smaller it's much harder to touch them. Consider the click working in a radius rather than a specific point.

There needs to be a pause even if you have to blank out the screen to stop cheating. I also sometimes had the same item in the same game. Giving some items a little context would make some of them a little easier.

Ladybug (ladybird)
The plug isn't a plug, it's a socket.
Sneaker (trainer)
Crystal (was really vague)
Yoyo (far too vague. Really needs to be clearer. Maybe add colour to it.)
Some grey circular thing (no idea) (eventually figured out it's a golf ball. Put it on a tee or something.)

It's a good idea, but the more you depixelize, the harder it becomes, because you must hover over the precise pixels. Something like "depixelize brush" with a small radius around your cursor might work better.
The problem with entering descriptions is that even if you know the right answer, the game might not accept it if you don't accept alternatives. Is it "cards" or "deck" or…? I don't know, actually, because at that round the input field froze and I was unable to type anything.