How do I convert SVG to ICO?

Upload your SVG file above. It is converted to ICO automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.

Does converting SVG to ICO lose quality?

Each icon size is scaled down from your image and stored without further compression, so small sizes stay crisp.

Will the ICO keep the transparent background?

Yes. ICO supports smooth, partial transparency, so transparent areas stay transparent.

SVGファイルとは？

SVGは画像をピクセルではなく図形とパスで表現するため、どのサイズでも鮮明なままです。SNS、メールアプリ、多くのアップロードフォームはSVGを受け付けないため、変換が必要になります。

What sizes does the ICO file include?

The standard icon sizes of 16, 32, 48, 64, 128 and 256 pixels, skipping any larger than your image. Browsers and Windows pick the best size automatically.

Is the SVG to ICO converter free?

Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

Convert SVG to ICO — Favicons and Windows Icons

Convert SVG to ICO online to make a favicon or Windows icon in several sizes. No software to install. Preview one free or batch-convert with Premium.

Drop your SVG file or click to browse

Why convert SVG to ICO?

Transparent areas stay transparent: ICO supports smooth, partial transparency just like SVG.
One ICO bundles the standard 16 to 256 px icon sizes (up to the size of your image), ready for a favicon.ico or a Windows shortcut.

What to expect when converting SVG to ICO

アイコンは正方形のため、正方形でない画像は透明な正方形の中央に配置されます。元の画像より大きなサイズは作成されないため、256 × 256ピクセル以上の画像から始めてください。
SVGは固定のピクセルサイズで描画されるため、ICOを後で拡大するとシャープさが失われます。編集用に元のファイルを保管しておいてください。

SVGとICOの比較

機能	SVG	ICO
氏名	Scalable Vector Graphics	Windowsアイコン
由来	2001年からのW3C標準	Created by Microsoft for Windows icons
圧縮	Vector shapes (text-based)	Lossless images at several sizes
透過	Yes — smooth, partial transparency	Yes — smooth, partial transparency
アニメーション	はい	いいえ
色	あらゆる色 — 図形は描画され、ピクセルとしては保存されない	透過対応のフルカラー
開けるアプリ	Browsers and design tools; many apps and upload forms reject it	Browsers (as favicon.ico), Windows and icon editors
こんな方に最適	logos, icons and illustrations that must stay sharp at any size	website favicons and Windows app or shortcut icons
主な欠点	写真を効率よく保存できず、多くのアプリが受け付けない	icons are square and at most 256 × 256 pixels

In short: choose SVG for logos, icons and illustrations that must stay sharp at any size; choose ICO for website favicons and Windows app or shortcut icons.

Frequently asked questions

How do I convert SVG to ICO?: Upload your SVG file above. It is converted to ICO automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.
Does converting SVG to ICO lose quality?: Each icon size is scaled down from your image and stored without further compression, so small sizes stay crisp.
Will the ICO keep the transparent background?: Yes. ICO supports smooth, partial transparency, so transparent areas stay transparent.
SVG or ICO: which should I use?: Use SVG for logos, icons and illustrations that must stay sharp at any size. Use ICO for website favicons and Windows app or shortcut icons. Keep in mind the main drawback of ICO: icons are square and at most 256 × 256 pixels.
SVGファイルとは？: SVGは画像をピクセルではなく図形とパスで表現するため、どのサイズでも鮮明なままです。SNS、メールアプリ、多くのアップロードフォームはSVGを受け付けないため、変換が必要になります。
What sizes does the ICO file include?: The standard icon sizes of 16, 32, 48, 64, 128 and 256 pixels, skipping any larger than your image. Browsers and Windows pick the best size automatically.
Is the SVG to ICO converter free?: Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

SVGからICOへでできること

始める前に、主な機能を確認してください。

Convert SVG files to ICO online
Bundle standard icon sizes from 16 to 256 px in one file
Switch to any other output format in Settings
Batch-convert many SVG files into one ZIP
Preview the result before you download

このツールを使用する

設定リファレンス

SVGからICOへで使用可能なコントロール。

設定

出力形式ドロップダウン: Chooses the file type you download. The page opens on its own output format; switch to any other format before converting.オプション: JPGPNGWebPAVIFGIFTIFFBMPICOPDF
品質スライダーレンジ: 20–100 · デフォルト: 90: For JPG, WebP, AVIF and image-to-PDF output: higher keeps more detail but makes a bigger file; 60–80 suits most photos. Documents (Publisher, XPS, EPS…) become PDFs with every page and sharp text, with no quality setting.
ロスレスモードオン/オフ: For WebP and AVIF output: keeps every pixel exactly (best for logos, graphics and transparency) at the cost of a larger file.
背景の塗りつぶしカラーピッカー: 透過を保存できないJPG、BMP、画像からPDFへの出力用：透明な部分を塗りつぶす色（既定は白）。