The previous local AI job ended before completion. True Scale v3.1 records the exact model, AI pass, disk checkpoint, and encoding stage without silently lowering scale.

Private AI Upscaler · True Scale v3.1 Faster

Exact 2x, 4x, or 8x compact Real-ESRGAN output, streamed safely on-device. Your photo is never uploaded by this app.

🔒 100% client-side processing

1. Choose an image

PNG, JPG, JPEG, WebP, and most browser-supported image formats.

🖼️

Drop your image here or select it from your device

No file selected

2. Upscale settings

v3.1 keeps the validated 4.87 MB compact Real-ESRGAN model, reduces redundant tile overlap, and adds an optional diagnostic-gated faster CPU path.

Image category

Scale

2x 4x 8x

Quality level

Download format

Mobile engine policy

Processing engine Checking…

The worker is checking local WASM runtime and cache status.

AI, disk streaming, and final encoding run in separate workers to avoid overlapping memory peaks.

Engine diagnostics and exact errors

No engine errors yet.

Exact-scale iPhone safety Waiting for image

Select an image to see exact AI input, exact final dimensions, storage needs, and the pass/fail boundary.

Default: exact 2x Medium JPG. The app verifies genuine compact Real-ESRGAN on a tiny input and the selected fixed tensor shape before it transfers or decodes the source.

Preparing… 0%

Timing starts when Convert is tapped.

Screen wake lock inactive.

AI model cache status will appear after the app starts.

3. Before / After

Move the slider to inspect the AI-generated result.

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BEFORE AFTER