Base64 to Image Converter

Paste any Base64 data URL or raw Base64 string, auto-detect the MIME type, and preview plus download the image

Paste any Base64 data URL or raw Base64 string; the MIME type is auto-detected and a downloadable image is produced.

Auto-detects image/png, image/jpeg, image/gif, image/webp, image/svg+xml, image/bmp, and image/x-icon.

Base64 data URL or raw Base64

What is Base64 to Image Converter

Last reviewed: April 18, 2026

Base64 is a binary-to-text encoding that represents arbitrary data using 64 printable ASCII characters, commonly used to embed binary blobs in JSON, URLs, and emails.

A Base64 image is a text-safe encoding of a binary image that can start with a `data:` prefix (e.g. `data:image/png;base64,…`) or be a raw Base64 payload.

Base64 to Image Converter auto-detects the source MIME type from the `data:` prefix or the image's magic bytes, then lets you preview and download the original file unchanged.

Why use it

One tool for every common image format — no need to pick the right decoder upfront.
Recover an image from an API payload, database field, or HTML snippet.
Byte-for-byte decoding: the file you download is identical to the original.
Runs entirely in your browser.

Features

Auto MIME detection
Magic-byte sniffing
Byte-for-byte output
Supports 7 image formats
Detected-format preview before download
Auto-decoded on-device

How to use Base64 to Image Converter

Paste Base64. Paste a data URL or raw Base64 string.
Decode. Click Decode to Auto — the detected format appears next to the preview.
Download. Click Download to save the file with the correct extension.

Example (before/after)

Base64 data URL

data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAA…

Downloaded image

base64-to-image.png (binary, 4 KB, detected: image/png)

Common errors

Cannot detect MIME

Without a data URL prefix, exotic formats (AVIF, TIFF, HEIC) fall through magic-byte detection.

Fix: Add the correct `data:image/…;base64,` prefix before pasting, or use the format-specific decoder.

Whitespace breaks decoding

Copy-paste from a log file can introduce newlines into the payload.

Fix: Whitespace is stripped automatically — just paste and decode.

FAQ

Which formats does it detect?

PNG, JPEG, GIF, WebP, SVG, BMP, and ICO via both `data:` prefix and magic-byte sniffing.

Is my data uploaded?

No. Decoding happens entirely in your browser.

Is the downloaded file identical to the original?

Yes — decoding is byte-for-byte; no canvas re-encoding happens.

What if my Base64 has no prefix?

Magic-byte detection handles most common formats. If detection fails, try a format-specific decoder.

Related tools

Related decoders and image tools: You can also browse the full Image Tools category for more options.

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Base64 to WebP Converter

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