JPEG, PNG, or WebP · up to 20 MB / 40 megapixels, at least 240 px each side · your photo stays in your browser. Nothing is uploaded.
Preparing the sample room…
02 Mark one glass pane at a time.
Choose “New pane,” then tap its four corners in order: top-left, top-right, bottom-right, bottom-left. Keep the frame outside your selection. You can adjust the numbered handles afterward.
Keyboard and exact corner adjustment
Add an adjustable rectangle, then Tab to a numbered handle. Arrow keys move it; Shift + arrow moves faster. Or enter corner positions below as percentages of the photo. Invalid crossing shapes are not applied.
Tips for a better preview
- Use a well-lit photo with all four corners of each glass pane visible.
- Mark each pane separately. The preview cannot identify glass, frames, handles, reflections, or people automatically.
- Choose 150–300% view to place corners precisely. Scroll the enlarged photo to reach its edges. Fit photo returns to the whole image; zoom does not crop or change the download.
- The scale slider changes the pattern visually, not in real-world inches. Physical samples and a site review are needed before choosing a product.
- Choose Clear photo to remove the working image and selections from this page. Closing the page also ends the session. Nothing is saved automatically.