FIRST CH TOOLS LOCAL PROCESSING — IMAGES NEVER LEAVE YOUR DEVICE 日本語

FIRST CH TOOLS / 02 WHITE BACKGROUND REMOVER

White Background Remover

Automatically makes only the edge-connected white background transparent and saves the result as PNG. White areas inside your artwork — speech bubbles, documents, highlights — are not connected to the background, so they are preserved.

Drag & drop an image here or click to choose a file (PNG / JPEG)
Lower the value if JPEG noise remains around the edges

How to Use

  1. Choose an imageDrag & drop or click to select a PNG/JPEG. Processing starts immediately.
  2. Check the resultPreview on the checkerboard. If white fringes remain, lower the threshold to re-process.
  3. SaveClick "Download transparent PNG". Your original file is never modified.

About This Tool

Instead of simply deleting every white pixel, this tool flood-fills from the image edges and removes only the white region connected to them. That is why white eyes, speech bubbles, and paper areas inside your artwork survive. A light feathering pass smooths the cut edges. Everything runs inside your browser — the image is never sent anywhere.

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