When 4× makes sense
Presentations, digital signage, and large web heroes benefit when the source is mid-size but soft.
Use case · Upscale
Upscale Image to 4K
Need a larger master for 4K slides or big screens? Use 4× upscaling, then verify faces and fine text.
Workspace
Upload. Process. Export.
Drop a photo below. Upscaling runs here — results appear in a dedicated section when ready.
AI upscale · 15s–2minJPG · PNG · WEBPMax 15MB
Upscale resolution
Select target quality before upload
Drop your image here
or click to browse · Max 15MB
Choose File No signup No watermark Auto-delete in 1 hour
Quality check
Zoom to 100% on eyes, logos, and fabric. If artifacts appear, try 2× or enhance first.
Privacy
Uploads auto-delete within one hour on FBG AI.
FAQ
Is the output exactly 3840×2160?
Output size depends on your source dimensions times the selected scale — crop afterward if you need exact 16:9 4K.
How long does 4× take?
Longer than 2× — typically from several seconds up to a couple of minutes depending on size.