HexaConvert

Draw on Image

Point at things with arrows, boxes and freehand strokes. Nothing is uploaded.

Drop an image here

PNG, JPEG, WebP, GIF, AVIF or BMP, up to 50 MB

About this tool

Marks up a screenshot. Point at something with an arrow, put a box around it, circle it, or scribble on it freehand, then save the picture with the marks drawn in.

How to use it

  1. 1Drop in a screenshot, or press Ctrl+V to paste one from the clipboard.
  2. 2Pick a tool, a colour and a thickness.
  3. 3Press and drag on the image to draw.
  4. 4Undo anything you did not mean, then download the result.

Good to know

A screenshot never has to become a file

On macOS Cmd, Control, Shift and 4 together, and on Windows the Windows key with Shift and S, put a screenshot on the clipboard rather than saving it. Paste it here and it loads directly, so marking one up does not start with a detour through the file system.

Undo removes marks, not pixels

Each mark is kept as a description of itself rather than as a picture of itself, so undoing simply forgets the last one and the image is redrawn without it. Keeping snapshots instead would cost around two hundred megabytes per step on a large photograph.

Thickness follows the picture

A stroke is stored at its width in the image, so a line that looks right on the preview is the same weight relative to the picture in the saved file. Without that, marks made on a large photograph would come out hair thin.