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Base64 Tools

Base64 to JSON

Turn Base64 into structured JSON.

  • Free
  • No sign-up
  • Runs in your browser
Base64 → JSON

Decodes the Base64 and pretty-prints the JSON.

Output

What does Base64 to JSON do?

Base64 to JSON decodes a Base64 string back into JSON.

Base64 turns any data into plain letters and digits so it can travel safely in JSON, email, URLs or HTML. It is an encoding, not encryption — anyone can decode it.

What you can use

A Base64 string. A leading data:…;base64, prefix is fine.

Example

Input

eyJhIjoxfQ==

Output

{"a":1}

How to use Base64 to JSON

  1. Step 1

    Paste the Base64 string.

  2. Step 2

    The decoded JSON appears in the output box.

  3. Step 3

    Copy or download the result.

Good to know

  • Base64 makes data about a third larger: a 30 KB image becomes roughly 40 KB of text.
  • Base64 is not encryption — anyone can decode it.

Your privacy

Everything happens in this browser tab: what you paste is converted by JavaScript on your device and never sent to our server. Closing the tab clears it. Even so, don’t paste live passwords, API keys or customer records into any website.

Related tools

All Base64 Tools
Image to Base64Turn an image into a Base64 string.Base64 to ImageTurn Base64 into a downloadable image.PNG to Base64Turn a PNG into a Base64 string.JPG to Base64Turn a JPG into a Base64 string.JSON to Base64Turn JSON into a Base64 string.XML to Base64Turn XML into a Base64 string.

Frequently asked questions

Is Base64 to JSON free?

Yes. Base64 to JSON is completely free, with no sign-up, no watermark and no daily limit.

Is the data I paste sent to a server?

No. Conversion runs in JavaScript inside this browser tab and nothing you paste is sent or stored. Even so, avoid pasting live passwords, API keys or private customer data into any website.

Why do I get an error?

Almost always the input isn’t quite valid: a missing comma or quote in JSON, an unclosed tag in XML, or a tab in YAML. The error message shows where parsing stopped — fix that spot, or press “Load example” to compare with input that works.

Does it work on my phone?

Yes. It works in any modern browser on Android, iPhone, tablets and computers — nothing to install.