Add Line To Image

Free

Draw one or more lines onto an uploaded image by dragging or precise coordinates, then download the result at full resolution.

Click to choose an image, or drag and drop one here

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What this tool does

This tool lets you draw one or more straight lines directly onto an uploaded image, right in your browser. Draw by clicking and dragging on the image, or enter exact X/Y coordinates for precise placement, then adjust the line's color, thickness, and whether it's solid or dashed.

Every line you add is tracked in a list so you can keep adding more, undo the last one if needed, and download the final result as a full-resolution PNG once you're done.

Problems it solves

Marking up a screenshot with an arrow-like line or divider to point something out.
Adding a straight reference line, crop guide, or measurement line to a photo or diagram.
Drawing a strikethrough-style line across part of an image.
Annotating an image with precise, coordinate-based lines rather than an imprecise freehand drag.

Frequently asked questions

›How do I draw a line on my image?

Upload an image, then click and drag anywhere on it, the line appears live as you drag and is added once you release the mouse. You can also enter exact X/Y coordinates for both endpoints if you need precise placement instead of a freehand drag.

›What coordinate system do the X/Y fields use?

Coordinates are in the image's actual pixel dimensions, with (0, 0) at the top-left corner, X increasing to the right and Y increasing downward, the standard convention for image and canvas coordinates. The fields default to the image's full width and height as a starting reference.

›Can I add more than one line, or remove one I already added?

Yes, add as many lines as you need, each one is listed in the sidebar with its coordinates. Use "Undo Last Line" to remove the most recently added line, or "Start Over" to clear everything and upload a different image.

›Does resizing my image for display affect the quality of the downloaded file?

No, the image is only visually scaled down to fit the screen if it's large, but lines are drawn and the file is exported at the image's full original resolution, so the downloaded PNG isn't a blurry, downscaled version.

›What file format does the download use?

The result downloads as a PNG file, which preserves sharp lines and text without the compression artifacts a JPEG might introduce around the edges of a drawn line.