Encoding

Base64 to Image

Paste a Base64 string or a data:image URL and preview the image instantly — with its type, dimensions, and size — then download it. Decoded locally in your browser, never uploaded.

Published March 8, 2024
Last reviewed June 28, 2026

Tool Summary Answer Block

This tool accepts structured input and returns deterministic output in the browser with no server upload.

Tool name: Base64 to Image
Input intent: Provide source content to transform, validate, or analyze.
Output intent: Receive normalized output suitable for copy, reuse, or debugging.
Example input: iVBORw0KGgoAAAANSUhEUgAAAAUA...
Example output: Rendered PNG preview + download

Local processing / privacy notice

Inputs are processed in your browser session.
We do not send raw input/output values to our analytics endpoint.
Use reset/clear actions when working with confidential data.

For this tool: your Base64 image data is decoded locally and never uploaded.

Base64 inputDrop file

Tool Introduction

Paste a Base64 string or a data:image URL and preview the image instantly — with its type, dimensions, and size — then download it. Decoded locally in your browser, never uploaded.

Tool Overview

Images are often carried as Base64 strings inside JSON responses, local-storage values, CSS, and data URLs. This tool accepts either a raw Base64 image payload or a full data:image/...;base64,... string, decodes it on your device, validates that the bytes really are an image, and renders the result. It reports the detected MIME type, pixel dimensions, and approximate byte size, and shows the preview over a checkerboard so transparency is visible. From there you can download the image as a file. Because everything happens in the browser, the image data never leaves your machine — useful when you are debugging an API payload that might contain sensitive content.

Use Cases

Preview a Base64 image returned by an API while debugging
Turn a data: URL from CSS or HTML back into a downloadable file
Inspect an image stored in local storage or a database column
Verify that a Base64 image you generated decodes to the right picture
Extract an embedded image from a JSON payload or log

Input/Output Examples

Raw Base64 with no prefix is assumed to be a PNG.

Input Intent

iVBORw0KGgoAAAANSUhEUgAAAAUA...

Output Intent

Rendered PNG preview + download

A full data URL keeps its declared MIME type.

Input Intent

data:image/jpeg;base64,/9j/4AAQSkZJRg...

Output Intent

Rendered JPEG preview with detected type and size

FAQ

Does it accept a full data URL or just raw Base64?+

Both. Paste a raw Base64 image string or a complete data:image/...;base64,... URL. Raw input with no prefix is treated as a PNG.

Why does decoding fail?+

Either the text is not valid Base64, or the decoded bytes are not a browser-supported image format. Check that you copied the entire string with no stray characters.

Is the image sent to a server?+

No. The Base64 is decoded and rendered entirely in your browser, so the image data stays on your device.

Can I download the result?+

Yes. Once the preview renders, use the download button to save the decoded image as a file.