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PNG Transparency Cleaner

Clean noisy semi-transparent edges in PNG files. Threshold near-transparent pixels to fully transparent and near-opaque to fully opaque.

upload_file

クリックして選択 またはここにファイルをドラッグ＆ドロップ

Select a PNG

対応形式: image/png

関連ツール

Image Alpha Viewer

Inspect and download the alpha (transparency) channel of any image as a grayscale mask. Fully private, runs in your browser.

Auto Crop Transparent Pixels

Trim transparent borders from PNG images automatically. Detects the non-transparent bounding box and crops the image to it.

Remove White Background

Make white or near-white backgrounds transparent in any image. Tolerance and feather controls. Fully private, no upload required.

メッシュグラデーションジェネレーター

複数の放射状カラーポイントを混ぜ合わせて、鮮やかなメッシュ風 SVG グラデーション背景を作成します — CSS の mesh gradient のように。

SVG ViewBox 生成

ライブプレビューを見ながら SVG の viewBox 値を生成・調整できます。余白の追加や座標の微調整にも対応します。

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PNG Transparency Cleaner

Clean up the semi-transparent fringing and noise that often surrounds exported PNG assets. The tool applies two thresholds to the alpha channel: any pixel below the low threshold becomes fully transparent, any pixel above the high threshold becomes fully opaque, and pixels in between keep their smooth alpha for clean anti-aliased edges.

Features

Independent low and high alpha thresholds
Preserves smooth alpha in the middle range
Transparent-checkerboard preview
100% local processing

Use cases

Clean up sticker exports
Remove halos from chromakey results
Tighten edges on cut-out portraits
Prepare assets for sprite atlases

PNG Transparency Cleaner

関連ツール

Image Alpha Viewer

Auto Crop Transparent Pixels

Remove White Background

AVIF を PNG に変換

メッシュグラデーションジェネレーター

PDFからJPG

SVG ViewBox 生成

もっと見る

PNG Transparency Cleaner

Features

Use cases