HDA Tools

Image ⇄ Base64 Converter

Convert images to and from Base64 encoding. Supports JPG/JPEG, PNG, WebP, AVIF, BMP formats.

Image ⇄ Base64 Converter - Select Your Files

Conversion Mode

Base64 to Image

Input Length: 0 characters

Image ⇄ Base64 Converter Tool Guide

Image Base64 Converter is a free online tool that enables bidirectional conversion between image files and Base64 encoded strings. Supports JPG, PNG, WebP, AVIF, BMP formats. Supports multiple output formats (Data URL, Base64 only, HTML tag, CSS background). All processing is done locally in your browser, files are never uploaded to the server, completely protecting your privacy and data security.

Bidirectional conversion, images and Base64 interconvert
100% local processing, privacy secure
Multiple output formats, flexible application

Tool Features

Bidirectional Conversion

Supports two conversion directions: image to Base64 and Base64 to image. Image to Base64 converts image files to Base64 encoded strings, Base64 to image restores Base64 strings to image files. The conversion process is simple and fast, supporting multiple image formats.

Multiple Output Formats

When converting images to Base64, supports multiple output formats: Data URL format (data:image/...;base64,...) can be directly used in HTML img tags or CSS background-image; Base64 only format contains only the encoded string; HTML tag format generates complete img tag; CSS background format generates complete background-image style.

Real-time Preview and Quick Copy

After conversion, you can preview results in real-time. Base64 to image mode can directly preview converted images, click to zoom. Image to Base64 mode can view complete Base64 encoded strings, supports one-click copy to clipboard, convenient for use in code.

How to Use

  1. 1

    Select Conversion Mode

    Choose conversion direction: Image to Base64 mode converts image files to Base64 encoded strings, suitable for embedding images in HTML, CSS or code; Base64 to image mode restores Base64 encoded strings to image files, suitable for extracting images from code.

  2. 2

    Input or Select File

    If in image to Base64 mode, click the select area to select an image file (supports JPG, PNG, WebP, AVIF, BMP formats, max 20MB). If in Base64 to image mode, paste the Base64 encoded string in the text box. Select output format (Data URL, Base64 only, HTML tag, CSS background).

  3. 3

    Start Conversion

    Click the "Convert to Base64" or "Convert to Image" button to begin processing. The tool will show conversion progress, and results will be displayed automatically after conversion. Image to Base64 mode can view Base64 encoded strings and copy with one click; Base64 to image mode can preview images and download. Click "Convert More" to process more files.

Frequently Asked Questions

Does Base64 encoding affect image quality?
No. Base64 only encodes image data into text format, it does not involve image compression or quality loss. Base64 encoded images have exactly the same quality as the original images, only the data format has changed. Base64 encoding increases file size by approximately 33%, which is determined by the encoding mechanism.
Will my images be uploaded to the server?
No, all processing is done in your browser. Your image files never leave your device, completely protecting your privacy.
What scenarios can Base64 encoding be used for?
Base64 encoding is commonly used in the following scenarios: 1) Directly embedding images in HTML (data URI), reducing HTTP requests; 2) Using background images in CSS; 3) Transmitting image data in JSON, XML and other text formats; 4) Using image data directly in code without external files. The tool supports multiple output formats to meet different usage scenarios.

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