Drop in a picture and it comes back as a small text file. Keep that file, send it, store it. Whenever you want the photo again, drop the text file back in and there it is.
No settings to learn. Drop a picture in and read the answer.
Anything from your phone or camera. JPEG, PNG, the lot. You don't need an account and there is nothing to install.
You get the picture back beside the original, so you can judge it yourself, along with the old size and the new one.
Download it and keep it anywhere. When you want the photo again, drop the file into Decompress and it comes back under its original name.
Pick whichever suits the picture. You choose on the compress page.
Squeezes the photo down to roughly a sixtieth of its size. A small amount of fine detail is given up to get there, which for a holiday snap or a profile picture you will not notice.
Good for: photos to send, backups, anything going on a website.
Gives you back exactly the picture you put in, pixel for pixel, with nothing altered at all. The file is bigger, about the size of a PNG.
Good for: artwork, scans, documents, anything you'll edit later.
Skip this if you like. The photo comes back either way.
Every photo is a long list of numbers, one for the colour of each dot. A big photo is millions of them, and most of them repeat something you already know: the sky here is much the same as the sky an inch to the left.
We taught a small program, by showing it eight hundred photographs, which parts of a picture can be guessed from the rest. It only writes down the parts it could not guess.
What's left gets packed as tightly as mathematically possible and written out as ordinary text. You can open the file in Notepad and look at it. It just needs the same program to read it back.
Three straight answers, because we'd rather tell you now.
The file looks like gibberish, but it isn't locked. Anyone with the same program can read it. Don't use this to hide anything.
The file only makes sense to the program that made it, a bit like a document that needs the right app. Come back here to open it.
This is a demonstration, and a good one, but your phone's camera app is not about to change. Use it for the fun of watching a photo become text.