Can I decode Base64 that contains binary data?

The tool decodes Base64 to UTF-8 text. If the original data is binary (like an image), the decoded output may appear as garbled characters since it is being displayed as text.

Is Base64 encryption?

No. Base64 is an encoding scheme, not encryption. Anyone can decode a Base64 string. It provides no security or confidentiality. Never use it to protect sensitive data.

Why does Base64 output end with equals signs?

The equals signs are padding characters. Base64 encodes data in groups of 3 bytes. When the input length is not a multiple of 3, padding is added to complete the final group.

How to Decode Base64

3 min readDeveloper

Base64 encoding is used everywhere from email attachments to API tokens. This guide shows you how to decode Base64 strings back to readable text and encode text into Base64 using a free browser tool.

Quick Steps

1
Open Base64 tool
Go to the Base64 Encoder/Decoder on Toolin.
2
Paste encoded string
Enter the Base64 string you want to decode.
3
Decode
Click Decode to reveal the original text.
4
Copy the result
Copy the decoded text from the output.

Base64 Encoder

Encode and decode Base64 strings

Open Tool

Step-by-Step: Decode a Base64 String

Open the Base64 tool

Navigate to the Base64 Encoder/Decoder on Toolin.

Paste your Base64 string

Paste the encoded string into the input field.

Click Decode

The tool instantly converts the Base64 string to its original text representation.

Copy the decoded output

Copy the decoded text from the output field.

What Is Base64 Encoding?

Base64 is a binary-to-text encoding scheme that represents binary data using 64 printable ASCII characters. It is widely used to embed binary data in text-based formats like JSON, XML, HTML, and email. Common examples include data URIs in CSS, JWT token payloads, and email attachment encoding. The encoding increases data size by roughly 33% but ensures safe transport through text-only channels.

Common Base64 Use Cases

Decode JWT token payloads to inspect claims.
Decode data URIs embedded in HTML or CSS.
Encode binary data for inclusion in JSON payloads.
Decode email attachment headers.
Encode API credentials for HTTP Basic Authentication.

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Frequently Asked Questions

Can I decode Base64 that contains binary data?: The tool decodes Base64 to UTF-8 text. If the original data is binary (like an image), the decoded output may appear as garbled characters since it is being displayed as text.
Is Base64 encryption?: No. Base64 is an encoding scheme, not encryption. Anyone can decode a Base64 string. It provides no security or confidentiality. Never use it to protect sensitive data.
Why does Base64 output end with equals signs?: The equals signs are padding characters. Base64 encodes data in groups of 3 bytes. When the input length is not a multiple of 3, padding is added to complete the final group.