> For the complete documentation index, see [llms.txt](https://help.laiout.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.laiout.co/designing-your-space/using-overlays.md).

# Using Overlays

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<summary>How do I add an overlay?</summary>

Open the floor you want to add an overlay to, then click Overlay in the top panel. An Upload button will appear. Click it, select the file you want to upload, and adjust the overlay to match the scale of your layout by dragging the corners in or out.

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<summary>In which upload modes can I use overlays?</summary>

Overlays are available in both Pro Mode and Serviced by laiout, so you can use them whether you are working on your own floor plan in Pro or reviewing a serviced layout.

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<summary>What file formats can I upload as an overlay?</summary>

You can upload overlays as PDF, JPG, or PNG files. This covers the most common export formats from CAD software, image editors, and PDF viewers, so you can bring in almost any reference drawing directly.

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<summary>Can I upload engineering layers, ceiling drawings, or other reference drawings as an overlay?</summary>

Yes. Any PDF, JPG, or PNG can be used as an overlay, including engineering layers, ceiling plans, MEP drawings, or any reference visual you want to compare against your layout. Upload the file the same way you would any other overlay, then adjust the scale to match your plan.

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<summary>How do I turn my overlay on or off?</summary>

After you upload an overlay and generate a layout, the overlay will automatically turn off so you can see your layout without any obstruction. To turn it back on, click the Overlay button in the top bar. From there you can also adjust the opacity to your preference.

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<summary>How do I change the opacity or transparency of my overlay?</summary>

In Overlay mode, adjust the opacity by moving the slider next to the Upload button in the top bar. Lower opacity makes the overlay more transparent, so you can see your layout underneath more clearly.

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<summary>Can I have more than one overlay uploaded at a time?</summary>

Currently, one overlay file can be uploaded at a time. If you upload a second file, it will replace the first. Support for multiple overlays is something we are actively working on for a future update.

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