Decode Base64 into readable text

Base64 Decoder

Convert Base64 strings back into readable plain text instantly. Paste standard or URL-safe Base64, decode it, validate the input, then copy or download the decoded result.

Decode Base64 Validate Input Copy Output

Readable decoded text

Decode Base64 data for API testing, configuration review, web development, and everyday debugging tasks.

Free Base64 Decoder Tool

Paste Base64 code below and decode it instantly. This tool works in your browser and keeps your data private.

Input Base64 0 characters

Decoded Output 0 characters

Input Type Auto mode supports standard Base64 and URL-safe Base64 strings.

Output View Choose plain decoded text or auto-format JSON when decoded content is valid JSON.

Quick Sample Load a sample to test the Base64 decoder quickly.

Waiting for Base64

Paste a Base64 string and click Decode Base64.

0 Input Characters

0 Decoded Characters

0 Decoded Bytes

Waiting Decode Status

Base64 decoded successfully.

Please paste a valid Base64 string before decoding.

Base64 is encoding, not encryption. If decoded output contains sensitive data, handle it carefully.

Why Use a Base64 Decoder?

Base64 decoding helps you convert encoded strings back into readable text for testing, debugging, and data review.

Decode Base64 Text

Convert Base64 strings back into readable text, URLs, JSON, HTML snippets, configuration values, and code.

Validate Encoded Input

Check whether a Base64 string is valid before using it in APIs, scripts, authentication headers, or web apps.

Browser-Based Privacy

Your Base64 data is decoded directly in your browser, so pasted content is not uploaded to the server.

What Is Base64 Decoding?

Base64 decoding converts an encoded Base64 string back into its original readable form. Base64 is often used to represent text or binary data in a safe text format for APIs, emails, URLs, and configuration files.

Developers commonly decode Base64 when checking API values, testing basic authentication strings, reviewing encoded JSON, debugging web data, or converting encoded text back into human-readable content.

How It Works

Decode Base64 text in three simple steps.

Paste Base64

Add your standard Base64 or URL-safe Base64 string into the input editor.

Decode and Validate

Click decode to validate the encoded string and convert it back into readable text.

Copy Decoded Output

Review the decoded result, then copy it to your clipboard or download it as a text file.

Base64 Decoder FAQs

Common questions about decoding Base64 strings online.

Yes, this Base64 Decoder is free to use. You can decode Base64, validate input, copy output, and download decoded text.

Yes. The tool supports standard Base64 and URL-safe Base64 strings with automatic detection.

No. Base64 is not encryption. It is an encoding format, so decoded data can be read easily if someone has the encoded string.

No. This Base64 Decoder works directly in your browser, so your pasted data is processed on your own device.

You can decode Base64 text, URLs, JSON, HTML snippets, CSS, JavaScript, API values, configuration strings, and other encoded content.