Where does the decoding happen?

Entirely in your browser — no data is sent to any server.

Base64 to Image Decoder

Paste a Base64 data URL to preview and download the image. Runs entirely in your browser — nothing is uploaded.

By AbraCalc Editorial Team · Reviewed by AbraCalc Methodology Review · Last reviewed: 2026-06-26 2 sources

Paste Base64 data URL

Paste a Base64 data URL above and click Preview.

Pure browser JavaScript (HTML canvas) — no upload.

Embed this tool on your site

<iframe src="https://abracalc.com/app/base64-to-image/" width="100%" height="640" style="border:1px solid #e6e1f0;border-radius:12px" loading="lazy"></iframe>

Cite this tool

APA

AbraCalc. (2026). Base64 to Image Decoder [Online calculator]. Retrieved from https://abracalc.com/app/base64-to-image/

BibTeX

@misc{abracalc-base64-to-image, author = {AbraCalc}, title = {Base64 to Image Decoder}, year = {2026}, howpublished = {\url{https://abracalc.com/app/base64-to-image/}} }

Did this tool answer your question?

How to use this tool

Paste a Base64 data URL into the box.
Click Preview.
Download the image.

Paste a Base64 data URL to preview and download the image. Runs entirely in your browser — nothing is uploaded.

How it works

The Base64 to Image Decoder reverses the encoding process: paste a Base64 data URL into the input field and the tool renders the image directly in your browser for preview and download. This is useful for inspecting inline images embedded in HTML, CSS, JSON API responses, or database records.

Paste a complete data URL starting with data:image/ or a raw Base64 string. The tool detects the format and displays the decoded image instantly. Click Download to save it as a PNG file. All decoding happens locally -- nothing is sent to a server.

Common use cases include extracting an image from a JSON API response for review, debugging a broken inline image in source code, recovering an image stored as text in a database, and converting data URLs received in email or chat back into viewable files.

Worked example

Extract an image from a JSON API response

Copy the Base64 string from the JSON field (e.g. the value of an avatar key).
Paste it into the input field of the decoder.
The image appears in the preview area immediately.
Click Download to save it as a PNG file.

A viewable and downloadable image file recovered from the API response text.

Common mistakes to avoid

Pasting only part of the Base64 string and getting a corrupted or blank preview.
Omitting the data URL prefix and then being confused when the image does not appear.
Trying to decode a non-image Base64 string such as a PDF and expecting an image result.

Key terms

Decoding: Converting encoded data such as Base64 text back into its original binary form.
Data URL: A URI that embeds file content directly as text using the format data:[mediatype];base64,[data].
Raw Base64: A Base64 string without the data URL prefix; just the encoded characters representing the binary data.

Frequently asked questions

Where does the decoding happen?: Entirely in your browser — no data is sent to any server.