---
title: "Default scene background sizing and product image fixes - Sign Customiser Changelog"
description: "Changelog: Default scene background sizing and product image fixes. Learn about the latest updates and improvements to Sign Customiser."
url: "https://www.signcustomiser.com/changelog/default-scene-background-sizing/"
last_updated: "2026-09-08"
---

Sign Customiser keeps the built-in blue/grey background consistent for compatible sign customisers. Select it and enable “Use the selected background in the product image” to carry it into cart and order product images. Enter a positive real width to scale the visualiser and Review screen, then use the same option to scale the cart and order image. Without saved dimensions, the sign keeps its usual fit, while an enabled product-image option still uses the selected built-in colour.

![Scene Editor showing default background size fields and visualiser scaling](/_astro/changelog-default-scene-background-sizing.U1OGhlsQ_Z2iRJfe.webp)

## What’s Changed

- **Set the default background size.** In the Scene Editor, enter a positive width under “Display default blue/gray background image”. You can also save a height, but the width drives proportional scaling. The fields show when preview or Review images and the default background are enabled. “Scale visualisation with size” must be on, and Drag, Scale and Rotate must be off. They start blank, with 300 cm as a recommended placeholder.
- **Scale every preview consistently.** With “Scale visualisation with size” on and a positive default background width, the visualiser and Review screen scale the sign against the built-in background. Enable “Use the selected background in the product image” for compatible customisers to scale cart and order product images too. Leave the fields blank to keep the usual fit.
- **Keep product images on the chosen backdrop.** With “Use the selected background in the product image” enabled, supported non-Lightbox Konva customisers show the selected built-in background as a flat colour in product images. This includes Neon, Channel, cut-out, stencil and wooden sign types. This replaces the previous fallback image, including the demonstration photo when no Main Product Image is configured.
- **Keep Material Length sizes in order.** Advanced Letter (Material Length) customisers with an unset size limit no longer show Medium or Large smaller than Small on backgrounds without dimensions. The Small preview stays the same.

## Sitemap

See the full [sitemap](/sitemap.md) for all pages.