Do I need to mark where the sign should go on the building?
No. Describe the placement in words: 'composite the sign above the entrance' or 'place the banner on the wall between the windows.' The AI understands architectural references like 'above the door,' 'on the second-floor facade,' and 'at the property entrance.' Use markers only when the building has multiple viable mounting areas and the AI keeps choosing the wrong one.
How do I composite my sign design onto a building photo?
Upload the building or storefront photo as your main image. Click '+ Add reference image' and upload your sign design file — channel letter layout, banner artwork, or vinyl lettering proof. Describe the placement: 'composite the sign from the reference above the entrance, matching the building's perspective.' The AI extracts the design and composites it onto the facade in 30 seconds. Designs on white or transparent backgrounds work best.
Is there a free tool to mockup sign designs on buildings without Photoshop?
Yes. EditThisPic lets you composite any sign design onto any building photo completely free, with no signup and no watermark. Upload your building photo and sign design, describe the placement, and download the result. One free edit per week, or purchase credits starting at $1.99 for more.
What sign design file format works best as a reference image?
PNG with a transparent background produces the cleanest composites. JPG on a white background also works well. Export from your design software without proof sheet borders, dimension lines, or measurement annotations — the AI will try to composite everything in the image. High resolution preserves fine details in lettering and logos.
How is this different from the storefront-sign-from-photo page?
That page is for single-photo edits where you describe the sign you want and the AI generates it from text. This page is specifically for two-photo compositing: you upload your actual sign design file AND a building photo, and the AI places your real design onto the building. Use this page when you already have a designed sign and need to show how it will look on a specific building.
Can I composite illuminated signs that glow at night?
Yes. For the best results, photograph the building at dusk when there is still some ambient light but the sky is darkening. Upload your lit-sign design as the reference and include 'with the sign glowing and casting a soft light spill on the surrounding wall' in your prompt. Pure nighttime photos work too but may need 2-3 refinements to get the glow effect right.
What is the best free AI tool for sign shop mockups and proposals?
EditThisPic is built for exactly this workflow. Upload two photos — the building and your sign design — describe where the sign goes, and get a realistic composite in 30 seconds. Unlike expensive signage mockup software that charges monthly subscriptions, EditThisPic requires no account, no learning curve, and no specialized sign mockup templates. Free to try.
Can I composite multiple signs onto the same building?
Yes, but do it one sign at a time for the best results. Composite the primary sign first (usually the largest or most prominent), download the result, then upload that result as your new main image and add the next sign design as a new reference. This gives you precise control over each sign's position and produces more realistic multi-sign packages.