Composition Overlay
Choose an image, switch between thirds, center, and diagonal guides, then preview or export the guide locally.
A QUICK WALKTHROUGH
How to use this tool
- Choose one JPEG, PNG, or WebP image within the stated limits.
- Select a guide style and adjust its colour, opacity, and line width.
- Download a new PNG with the selected guide drawn over the image; the original stays unchanged.
Local image workflow
The selected image is decoded, previewed, and exported in this browser. Image bytes are not uploaded, fetched, or saved by the page.
Guide styles
Choose rule of thirds, center cross, or diagonal guides. These are visual aids for checking a frame; they do not crop, analyse, or detect subjects.
Output scope
Download creates a new PNG with the guide drawn on top. Source metadata, animation, and the original file format are not preserved.
GOOD TO KNOW
Common questions
Does this upload my image?
No. Decoding, preview, drawing, and PNG export happen locally in your browser.
Which guides are available?
Rule of thirds, center cross, and diagonals are available in the workbench.
Does it identify the subject or improve composition automatically?
No. It only draws a selectable visual guide; composition decisions remain yours.
What does the download contain?
A new PNG with the selected guide drawn over the image. The original file remains unchanged.