---
title: "Custom design upload and visualiser improvements - Sign Customiser Changelog"
description: "Changelog: Custom design upload and visualiser improvements. Learn about the latest updates and improvements to Sign Customiser."
url: "https://www.signcustomiser.com/changelog/custom-design-file-upload-improvements/"
last_updated: "2026-10-22"
---

The desktop visualiser now shows uploaded designs large and centred. When scene backgrounds are available, it shows the selected scene behind them. Custom design forms also accept WebP, AVIF, GIF and BMP files. Shoppers get a clear message when a file type is not supported.

![Two uploaded designs centred on a marble scene background in the custom design visualiser](/_astro/changelog-custom-design-file-upload-improvements-visualiser.DYY1ShuM_ZJOmNs.webp)![Custom design form showing an accepted WebP upload](/_astro/changelog-custom-design-file-upload-improvements-form.DAncVIg5_ZuNn75.webp)

## What’s Changed

- **Show uploads on the stage.** Display accepted images large and centred in the visualiser. Arrange multiple uploads side by side and show the file name below each preview.
- **Use scene backgrounds.** Display the selected scene behind uploaded designs. Show background choices on desktop when a merchant enables more than one scene background. Do not show these choices for lightbox customisers.
- **Accept more image files.** Accept WebP, AVIF, GIF and BMP uploads on every custom design form. Keep each file in the shopper’s original format.
- **Show clear file errors.** Show a merchant-editable message on the file field when a file type is not supported. Keep the general submission error for other failures.
- **Show document file types.** Show an extension badge for PDF, AI and EPS files when an image preview is not available.
- **Cover every custom design form.** Apply the upload and preview improvements to customisers with custom design forms for every sign product type.

- [feature](/changelog/tag/feature/)
- [fix](/changelog/tag/fix/)

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## Previousupdates

[View all updates](/changelog/)

- [September 6, 2026Default scene background sizing and product image fixesSet a real width for the built-in scene background and keep product images aligned with the selected scene.feature](/changelog/default-scene-background-sizing/)
- [August 25, 2026Export quote PDFs from your Quotes inboxSave quote requests and custom design submissions as complete PDFs, with customer details, answers and uploaded pictures gathered in one place.feature](/changelog/export-quote-pdfs-from-your-quotes-inbox/)
- [August 24, 2026Access all your quotes via the APIQuote requests and custom design submissions can now be read from the Sign Customiser API, including the history you collected before you connected an integration.feature](/changelog/read-past-quote-requests-over-the-api/)
- [August 24, 2026Connect an AI agent to your StoreConnect an AI agent to help with customisers, pricing, orders and quotes.feature](/changelog/mcp-server-for-ai-assistants/)

[View all updates](/changelog/)

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