Base64 to Image Converter

Paste a Base64 string and get the original image file back. Free in your browser — no sign-up, no watermarks.

Drop your Base64 files here

or click to browse — Select multiple files for batch conversion

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⚡ Instant — conversion starts the moment you add files. No sign-up, no watermarks. Why FileHugger

🔍 How your file is processed
Runs
In your browser on this page
Engine
Base64 decoding in your browser; the file type is detected from the decoded bytes
Max input
Paste input of any practical length — limited only by your browser's memory
Your file
Processed in this browser tab — the file is not uploaded. Converted results are kept in this browser's local storage for up to two hours so their matching download page can show them; expired results are removed on the next site visit. Nothing is stored on our servers.
Good to know
None — decoding restores the original bytes exactly.

Full security & file-privacy details →

Or paste your Base64 string or data URI directly:

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How to convert Base64 to Image

  1. Click Choose files (or drag & drop) and select one or more Base64 files. You can also paste the input text directly into the box below the uploader.
  2. No settings needed for this conversion — the defaults handle everything.
  3. Press Convert to Image. Each file is converted with a live progress indicator.
  4. Open the download page to save your files individually or grab everything as a single ZIP.

Why convert Base64 to Image?

Debugging an API payload, an email template or a data URI from CSS? Paste the Base64 (with or without the data: prefix) and this tool decodes it, detects the real image type from its bytes, shows a preview and hands you the file — named with the correct extension.

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What this tool preserves — and what it changes

✓ Preserved

  • The original bytes exactly — Base64 decoding is lossless, so you get back precisely the file that was encoded
  • Messy input: whitespace and line breaks are tolerated, and URL-safe Base64 (- and _) is accepted alongside the standard alphabet

↺ Changed

  • The file type is detected from the decoded bytes — PNG, JPG, GIF, BMP, WebP, ICO (even a Base64 PDF or SVG is recognized) — not from what the string claims, and the download is named with the correct extension
  • A data: URI prefix is understood and stripped; its declared MIME is used only as a fallback when the bytes match no known signature

Known limits & edge cases

  • Strings that are not valid Base64 — stray characters, a truncated copy-paste, broken padding — are refused with a clear message instead of producing a corrupt file
  • Pasting shows a decoded preview when the bytes are an image, so you see the picture before downloading (file uploads convert straight to a download)
  • If the bytes match nothing known and no data URI names a type, the download falls back to a generic .bin file rather than guessing an extension

Engine: Base64 decoding in your browser; the file type is detected from the decoded bytes. These statements describe the engine as shipped on 2026-10-02 — behaviour changes are recorded in the changelog.

About the formats

What is a Base64 file?

Base64 is a way to represent binary files — like images — as plain ASCII text. Developers embed images directly in HTML, CSS or JSON as Base64 data URIs, and many APIs transmit files this way. Encoding an image produces a text string you can paste anywhere; decoding a Base64 string restores the original image file.

What is an Image file?

Decoded Base64 data isn’t always the same file type, so this tool doesn’t assume one: it inspects the decoded bytes for the real image signature — PNG, JPG, GIF, BMP, WebP or ICO — and names the downloaded file with the correct extension automatically.

Decoding the image hiding in a string

A blob of Base64 in an API response, a data: URI in a stylesheet, an embedded image in a JSON export or a database dump — the picture is in there, and this tool gets it out. Paste the bare string or the full data URI (the prefix is stripped automatically), and the bytes are decoded back into a viewable, saveable image file.

The detail that saves guesswork: the file’s real type is detected from its decoded signature — the actual bytes say whether it’s a PNG, JPG, WebP or GIF — so the download gets the correct extension even when the string came with no label or a wrong one. It’s a two-second sanity check for developers (“what image did the API actually return?”) and a recovery path for assets that exist only inside markup.

Frequently asked questions

Is this Base64 to Image converter free?

Yes — completely free, with no sign-up, no watermarks and no daily quota. Processing happens in this browser, so the practical limit is the memory available on your device.

Can I convert multiple Base64 files at once?

Yes. Select or drop as many files as you like — each one is converted in sequence with its own progress status, and you can download the results individually or all together as a ZIP archive.

Does it work with data URIs?

Yes — paste either a bare Base64 string or a full data URI (data:image/png;base64,...). The decoder strips the prefix, decodes the bytes and detects the real image type from the file signature, so the downloaded file always gets the right extension.

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