ASCII Converter
Upload PNG/JPG and get instant 4K ASCII output with exact-size canvas rendering, transparent pixel-safe conversion, and experimental WebGPU synthesis.
PNG/JPG to ASCII
4K locked, exact canvas output. Experimental mode uses WebGPU when available, otherwise custom CPU fallback. A/B panel compares both.
Worker Mode
4K Locked
Exact Canvas Fit
A/B Compare
Drop PNG or JPG here, or click to upload
Auto conversion starts immediately
Checking WebGPU adapter...
Detail
1.00x
Char Aspect
0.50
Contrast
1.00x
Brightness
+0.00
Alpha Threshold
0.08
Edge Boost (Experimental)
1.00x
Charset Preset
Output grid width: 320 chars
Input sampling ceiling: 8192px
Primary: Standard 4K Worker
Source
Upload a PNG or JPG image
Primary Output
Primary ASCII canvas will appear here
A: Standard 4K Worker
Standard output pending...
B: Experimental
Experimental output pending...