FastOS Tools
FastOS Tools

画像からBase64

画像をBase64文字列にオンライン変換します。画像を瞬時にBase64形式にエンコードします。

画像をアップロード

機能紹介

The Image to Base64 tool converts images into Base64 strings you can embed directly in HTML, CSS, or JSON. It is useful for small icons, inline assets, and quick prototyping.

このツールを使うタイミング

Use this tool whenever you want to inline an image: embedding icons in stylesheets, packaging assets in JSON, or testing image‑related APIs.

使い方

1

Upload an image

Drag and drop an image or use the upload button to select a file from your device.

2

Convert to Base64

The tool generates a Base64 string representation of the image entirely in your browser.

3

Copy the encoded string

Copy the Base64 output into your HTML, CSS, or configuration file as needed.

使用例

Embedding a small icon in CSS

Convert a PNG icon to Base64 and use it as a `background-image` data URI to avoid extra HTTP requests.

よくある質問

関連ツール