# Image to Base64 Converter - Encode & Decode Images Online

> Free online image Base64 converter: turn an image into a Base64 string or Data URI with ready CSS and HTML snippets, or decode Base64 back to a file.

- URL: https://qilingtools.com/en/image/base64
- Category: Image Tools (https://qilingtools.com/en/image)
- Tags: [Image](https://qilingtools.com/en/tags/image), [Converters](https://qilingtools.com/en/tags/convert), [Frontend](https://qilingtools.com/en/tags/frontend), [Encoding](https://qilingtools.com/en/tags/encode)
- Last updated: 2026-10-26
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

Convert between images and Base64 in both directions. Upload an image to get a Data URI, raw Base64, a CSS background rule or an HTML <img> tag, each ready to copy — perfect for embedding small icons in web pages, email templates or JSON payloads. Going the other way, paste a Base64 string or Data URI and the tool detects the image type, previews it and lets you download it. Everything runs locally and nothing is uploaded.

## How to use

1. Choose Image → Base64 and upload, or Base64 → Image and paste
2. Pick the output format you need
3. Copy the code, or preview and download the decoded image

## Features

- Image → Base64 and Base64 → Image
- Data URI, raw Base64, CSS and HTML output
- Auto-detects PNG, JPG, GIF, WebP, SVG and more
- One-click copy, runs locally

## FAQ

### Why is the Base64 larger than the file?

Base64 uses four characters for every three bytes, adding roughly a third to the size. It suits small icons; larger images are better served as files.

### Does the pasted text need a data: prefix?

No. Common image formats are recognised from the start of the encoded data.

### Are my files or data uploaded?

No. Everything runs locally in your browser with no network upload, and is discarded when you close the page.

### Do I need to sign up or pay?

No. The site is completely free, needs no account and has no usage limits.

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