Annotating a bug screenshot
Circle the failing spot in red before sending the shot to a developer.
Guide
Image Doodle is the freehand brush panel of the image workbench (?tool=doodle). Pick a colour (the eight swatches red, orange, yellow, green, blue, purple, white and black, or the custom colour picker), a size (1–120px) and an opacity (5–100%), then hold and drag on the canvas to draw. Every stroke you finish becomes its own object layer rather than being baked into the pixels — after switching to another tool you can click a stroke and drag it elsewhere or press Delete to remove it, and the panel also offers “Delete selected stroke” while a stroke is selected. All drawing happens locally in your browser.
Updated 2026-09-093 min read
Image Doodle is the freehand brush panel of the image workbench (?tool=doodle). Pick a colour (the eight swatches red, orange, yellow, green, blue, purple, white and black, or the custom colour picker), a size (1–120px) and an opacity (5–100%), then hold and drag on the canvas to draw. Every stroke you finish becomes its own object layer rather than being baked into the pixels — after switching to another tool you can click a stroke and drag it elsewhere or press Delete to remove it, and the panel also offers “Delete selected stroke” while a stroke is selected. All drawing happens locally in your browser.
Unlike “Pixelate”, doodling adds something instead of hiding something; unlike “Text and Stickers”, it is hand drawing rather than typesetting.
| Input | Output | Notes |
|---|---|---|
Red, 8px, 100%, circle an error in a screenshot |
One red circle object that can be dragged elsewhere |
Strokes are object layers |
Yellow, 60px, 35%, swipe across a line of text |
A highlighter effect |
The low opacity leaves the text readable |
White, 3px, sign your name on a dark photo |
A thin white handwritten signature |
The handwriting follows your mouse or stylus |
Circle the failing spot in red before sending the shot to a developer.
Draw arrows and highlight key points on a chart by hand.
Write a date or a signature in the corner of a photo.
Hide private details behind a mosaic, then add notes with doodle strokes.
There is no eraser. Switch to another tool, click that stroke and press Delete, or undo with Ctrl+Z.
At the moment there is only the freehand brush and no shape tools; arrows have to be drawn by hand.
Yes. On export the object layers and the base image are composited into one picture; until then you can still move or delete them.
Strokes are drawn on a local canvas in your browser and the picture is never uploaded anywhere; closing the page releases the memory behind it.
Updated 2026-09-09
Free-hand drawing and annotation with adjustable color, width and opacity
Everything runs locally in your browser; files are never uploaded to a server