Convert SVG to GIF: Free Online Converter
Convert Scalable Vector Graphics to Graphics Interchange Format online for free. Fast, secure image conversion with no watermarks or registration.
SVGに対応
アップロードすることで、これらのファイルの権利を有していること、および利用規約に同意することを確認したものとみなされます。
安全な転送
HTTPS暗号化アップロード
プライバシー優先
ゲストのファイルは約2時間で自動削除
登録不要
すぐに変換を開始
どこでも動作
あらゆるブラウザ、あらゆるデバイス
SVG から GIF への設定
- エンジン
- 画像
- 設定
- 設定は不要です。適切な初期値が使われます。
変換方法
アップロードエリアにドラッグするか、クリックして選択し、.svgファイルをアップロードしてください。
必要に応じて出力設定を調整してください。デフォルト設定ではオリジナルの品質を維持します。
「変換」をクリックし、準備ができたら.gifファイルをダウンロードしてください。
SVGからGIFへの変換について
SVG and GIF represent fundamentally different approaches to image encoding. SVG uses XML-based vector descriptions that scale infinitely, while GIF is a raster format limited to 256 colors per frame with LZW compression. Converting SVG to GIF rasterizes the vector content and quantizes the colors to GIF's palette, producing a file that is universally displayable in browsers, messaging apps, and email clients: including contexts where SVG rendering is blocked for security reasons.
Email clients are the primary driver for this conversion. Most email clients (Gmail, Outlook, Yahoo Mail) strip SVG content from HTML emails due to security concerns, since SVG can contain embedded JavaScript. GIF, by contrast, is universally rendered inline in every email client. If you need SVG graphics to appear in email newsletters or marketing campaigns, GIF conversion is often the only option.
SVGをGIFに変換する理由
Email security policies universally block SVG rendering. Gmail, Outlook.com, Apple Mail, and Yahoo Mail all strip or block SVG images from HTML emails. This means any SVG content in email newsletters, transactional emails, or marketing campaigns will not display. GIF is the safest image format for email because every email client since the 1990s renders GIF inline without restrictions.
GIF is also the required format for certain legacy content management systems, social media image uploads (when PNG/JPG are too large or animation is needed), and platforms that explicitly accept only GIF, JPEG, and PNG. For simple graphics with limited colors — logos, icons, buttons, banners — GIF produces compact files that load quickly.
主な活用例
- Convert SVG logos for email newsletter templates where SVG is blocked
- Create GIF icons from SVG designs for legacy content management systems
- Produce animated GIF banners from SVG source artwork
- Generate GIF badges and buttons from SVG designs for forum signatures
- Prepare SVG illustrations as GIF for platforms that do not support SVG uploads
- Convert SVG social media graphics to GIF for animated posts
仕組み
The converter rasterizes the SVG at the specified resolution, then quantizes the full-color output to an optimal 256-color palette using median-cut quantization. Floyd-Steinberg dithering is applied to minimize banding on gradients. The result is encoded as a GIF89a file. If the SVG contains CSS animations or SMIL animation elements, a multi-frame GIF is generated capturing the animation sequence. Transparency from the SVG is mapped to GIF's binary transparency.
品質とパフォーマンス
For SVG graphics with flat colors and sharp edges — logos, icons, diagrams — the GIF output is visually identical to the SVG at the rendered size. Gradients and photographic elements suffer from the 256-color palette limitation, producing visible banding or dithering patterns. Anti-aliased edges may show slight fringing due to the limited palette.
デバイス互換性
| Device | SVG | GIF |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Native |
| Linux | Partial | Partial |
| Web Browser | Native | Native |
最良の結果を得るためのヒント
- 1Use PNG instead of GIF for static SVG conversion — better quality and smaller file sizes
- 2GIF is the safest format for email images where SVG rendering is blocked
- 3Keep SVG designs simple with flat colors for the best GIF quality
- 4Set a solid background color in the SVG before converting to avoid transparency issues
- 5For animated SVG, test the GIF frame rate and loop count after conversion
関連する変換
SVG to GIF conversion is essential for email marketing, legacy CMS integration, and platforms that block or do not support SVG. For flat-color vector graphics, GIF provides excellent quality in a universally supported format.
SVGとGIFの比較
| 特徴 | SVG | GIF |
|---|---|---|
| 正式名称 | Scalable Vector Graphics | Graphics Interchange Format |
| 拡張子 | .svg | .gif |