How to Annotate an Image So Others Find the Point
An annotation is only useful if the reader can find the exact spot in seconds.
What is the Image Annotator?
Give the note and its x and y position, and the tool clamps the point to a 600 by 400 frame so a note can never land off the image. In the browser a marker circle and label are drawn at that point on a canvas for download. The preview uses a plain background, so treat it as a position check for your own image.
How to use it
- Type the note
- Enter its x and y position
- Check the clamped position and download the preview
Worked example
Note here at x=120 and y=80 sits inside the 600 by 400 frame unchanged, with a red marker circle drawn around the point in the browser.
Where should an annotation marker go?
Exactly on the detail it refers to, with the label offset just enough not to cover it. Vague arrows and distant labels slow everyone down.
Frequently asked questions
What happens to positions outside the image?
They are clamped to the nearest edge, so the marker stays visible instead of disappearing off-frame.
Can I add several notes?
Not here. This tool places one note at a time, so repeat it for each point you want to mark.