Base64 to Image

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data using 64 printable ASCII characters: the upper- and lower-case letters A–Z and a–z, the digits 0–9, the plus sign (+) and the forward slash (/), with the equals sign (=) used for padding. Every three bytes of binary input are encoded as four Base64 characters, so the encoded output is roughly 33% larger than the original binary. Base64 was originally defined in RFC 2045 for MIME email attachments and is now widely used whenever binary data needs to travel through text-only channels such as JSON, XML, HTML, CSS, JavaScript source code, or data URLs.

Because Base64 is plain text, it is commonly used to embed images directly inside HTML, CSS, or JavaScript. A Data URL is simply a Base64 payload prefixed with a scheme like data:image/png;base64,. When you receive such a string and need to recover the original image file, a Base64 to Image converter decodes the text back into binary pixels and lets you save it as a normal image file on your device.

Why convert Base64 to image?

There are many situations where you receive an image as a Base64 string and need a normal image file instead. The most common reasons include saving an image embedded in an email or API response, extracting a graphic from a data URL inside a CSS file, and recovering a screenshot or photo that was pasted as Base64 inside a form, chat, or JSON document. Converting Base64 back to a real image file lets you open it in image editors, attach it to other messages, and store it on disk like any other picture.

Base64 to Image conversion is also useful when you need to re-encode an inlined image into a different format — for example, turning a Base64-encoded PNG into a smaller JPG or WebP file for the web. The decoded image can be drawn onto a canvas and re-encoded to any format the browser supports, giving you full control over the output.

When to use Base64 to Image conversion

Converting a Base64 string back into a downloadable image makes sense in many practical scenarios. The most common ones are:

• API responses. Many REST APIs return uploaded images as Base64 strings inside JSON. Decode the string to save the file locally.
• Email attachments. Some email systems inline images as Base64 inside the HTML body. Extract them as normal image files.
• Form and chat uploads. Web apps that paste images into rich-text editors often transfer them as Base64. Convert them back to files for storage.
• Re-encoding. Turn a Base64-encoded PNG into a smaller JPG or WebP, or vice versa, without keeping the original file.
• Database fields. Images stored as Base64 text in a database can be decoded back into files for backup or migration.
• CSS and HTML inspection. Pull an inline background image out of a stylesheet and save it as a standalone file.

Wherever an image lives only as text, Base64 to Image conversion turns it back into a usable file in seconds.

How to convert Base64 to image

Converting a Base64 string to an image with this tool takes only a few seconds and happens entirely inside your browser. No upload, no sign-up, and no installation are required. The tool reads the text from the input box, normalizes it into a Data URL if needed, decodes it into an image, and re-encodes it into your chosen output format via the Canvas API. Follow these four steps:

1. Paste the Base64 string. Paste either a full Data URL (starting with data:image/...) or a pure Base64 string into the input box.
2. Load the image. Click "Load Image". The tool decodes the string and shows a preview of the recovered image.
3. Pick the output format. Choose PNG for lossless quality, JPG for photographs, or WebP for the smallest file size.
4. Convert and download. Click "Convert" to re-encode the image, then "Download" to save it to your device.

Because every step runs locally in your browser using JavaScript, your Base64 string and the decoded image are never uploaded to a server. This makes the conversion completely private, fast, and suitable for sensitive or confidential content.

Supported formats

This tool accepts any Base64-encoded image whose original format is supported by your browser — typically PNG, JPG, WebP, GIF, BMP and SVG. The decoded image can then be re-encoded and downloaded as PNG, JPG, or WebP, depending on your needs:

• PNG — Lossless raster format with alpha-channel transparency. Best for logos, icons, screenshots, and graphics with sharp edges.
• JPG — Lossy raster format with near-universal compatibility. Best for photographs and natural-tone images.
• WebP — Modern raster format with both lossy and lossless modes and the smallest file sizes. Best for web delivery.

If the source Base64 string represents a transparent PNG, choose PNG or WebP as the output to keep the transparency — JPG does not support transparency and will fill transparent areas with white.