How do I decode Base64 to image?

Paste your Base64 string (with or without data URI prefix) into the decoder. Our tool instantly converts it back to a downloadable image.

Can I decode Base64 without data URI prefix?

Yes! Our decoder accepts both raw Base64 strings and full data URIs (e.g., "data:image/png;base64,iVBOR..."). Everything is processed locally in your browser, so your files never leave your device. This keeps your data private and avoids waiting for server processing.

What image formats can be decoded?

We support decoding PNG, JPG, GIF, WebP, SVG, BMP, and other common formats from Base64. The format is auto-detected. Everything is processed locally in your browser, so your files never leave your device.

Is Base64 decoding safe?

Yes. Our decoder runs entirely in your browser. Base64 strings are decoded locally—no data is sent to our servers. Everything is processed locally in your browser, so your files never leave your device.

Is this tool free to use?

Yes. There is no charge, no account, and no watermark on the output. Everything is processed locally in your browser, so your files never leave your device. This keeps your data private and avoids waiting for server processing.

Base64 to Image Decoder — Decode

Base64 to Image Decoder

Decoding turns a Base64 string back into a downloadable image file in your browser. Do it here — free and private, with no uploads.

Why it matters: Decoding turns a Base64 string back into a downloadable image file in your browser.

How to convert an image to Base64 (and back)

1Choose Encoder to turn an image into Base64, or Decoder to turn a string back into an image.
2Pick your output — raw, URL-safe, no-padding, or wrapped — and decide whether to include the data: prefix.
3Copy to clipboard or download as a file. Everything runs locally — nothing is uploaded.

Best settings for this page: Switch to the Decoder tab, paste your Base64, and download the image.

All processing runs locally in your browser. Your images and strings are not uploaded to any server.

Base64 basics: size, data URIs, and when to use it

Size trade-off — Base64 inflates binary data by about 33%. It is best for small assets (icons, logos) and single-file pages; for large images, external files with caching are faster.

Data URI — a data URI is raw Base64 prefixed with a MIME type, e.g. data:image/png;base64,.... Include the prefix for HTML/CSS; store raw Base64 for JSON or databases.

URL-safe — RFC 4648 §5 swaps + and / for - and _ and drops padding, making the string safe for URLs, JWTs, and filenames.

Use it for embedding images in code, email, and APIs where an extra HTTP request is worse than the size cost.

Frequently Asked Questions

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Decode

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Base64 to Image Decoder

Output Settings

Image Preview

Base64 Output

Paste Base64 String

Decoded Image

Related reading

Base64 to Image Decoder

How to convert an image to Base64 (and back)

Base64 basics: size, data URIs, and when to use it

Frequently Asked Questions

All Base64 Tools

Encode

Decode

Features

More Tools

Related Tools