F800 Bootlogo SD `.img` Generator

Client-side WebAssembly (`img_tool.wasm`) • Crop & resize any image to `1024×600` and generate a safe bootlogo-only SD update `.img`

Loading WASM…
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Drag & drop an image here, or click "Open Image" Supports PNG, JPG, WebP, BMP, SVG — or drop an existing `.img` / `bootlogo.bin` to inspect its current logo

Crop & Resize Preview (`1024 × 600`)

Source: Demo pattern Drag to pan • Scroll to zoom

Crop & Encoding Settings

Scaling / Crop Mode Cover (Crop)
Zoom 100%
Orientation & Alignment
Background
#000000
Output Filename
Baseline JPEG Quality 92%
Encoded JPEG Size (max 128 KiB) — / 131,072 B
Format: Baseline DCT (`SOF0`, `1024×600`) 0%
Ready. Open or drop an image, adjust framing, and click Generate & Download `.img`.
How to flash via SD Card (`cdr` updater)
  1. Format a microSD card as FAT32.
  2. Copy the downloaded bootlogo_update.img to the root directory of the SD card.
  3. Insert the SD card into the device — update popup will appear which need to be confirmed.