Image annotator

Box the part of your picture
that everyone keeps missing.

Open an image, draw boxes on the parts that matter and name them. What you get back is the same picture with the marks drawn into it, as a PNG you can download or put straight back on your clipboard.

Drop an image here

PNG, JPEG, WebP. Opened by this tab — there is no upload.

Copied one already? Press Ctrl+V anywhere on this page to open it.

No picture yet

Every box you draw will keep the position it has in the original pixels.

The picture is decoded, drawn and exported by this tab. It never leaves your device, and nothing about it is stored — closing the page loses the boxes.

Once the picture says what you meant

A marked screen capture is usually the biggest PNG anybody sends in a day, and it is about to go into a ticket or a chat. The same picture, smaller, is one step away.

See what it weighs