What does the Base64 Encode/Decode tool do?

The Base64 Encode/Decode tool on PowerSEOTools.online converts normal text into Base64 strings and decodes Base64 back to readable text. It supports UTF-8 characters, validation and basic size statistics.

When should I use Base64 encoding?

Base64 encoding is useful when you need to safely transmit or store binary data, such as images or files, in text-based formats like JSON, HTML, URLs, email or configuration files.

Does this tool support UTF-8 characters?

Yes. The tool uses modern browser APIs where available to handle UTF-8 correctly, so non-English characters and emojis are encoded and decoded safely as Base64.

Is the Base64 Encode/Decode tool free?

Yes. The Base64 Encode/Decode tool is completely free to use with no registration or usage limits, subject to fair use of the site.

Is my data sent to a server when encoding or decoding?

No. All Base64 encoding and decoding is done locally in your browser using JavaScript. Your data is never uploaded, stored or logged on our servers, making it safe for sensitive content.

Base64 Encode/Decode

Encode text to Base64 or decode Base64 strings back to human-readable text. Supports UTF-8 characters, validation and size stats for secure data transmission and storage.

Input

Tip: Use Encode for normal text → Base64, and Decode for Base64 → text.

Result

Input Details

Characters 0

Approx. size (UTF-8) 0 B

Looks like Base64 —

Padding (= characters) 0

Result Details

Characters 0

Approx. size (UTF-8) 0 B

Base64 expansion ratio —

UTF-8 safe —

Validation

Last action None

Status Not processed

Error message —

Free Online Base64 Encode/Decode Tool

The Base64 Encode/Decode tool from PowerSEOTools.online helps developers and technical users safely convert data between normal text and Base64. Base64 is a widely used encoding for transmitting binary data over text-based channels like JSON, HTML, email and URLs.

What is Base64?

Base64 is a binary-to-text encoding scheme. It takes any binary data (bytes) and represents it using 64 printable characters (A–Z, a–z, 0–9, + and /) plus = for padding. This makes it safe to include binary data inside systems that expect plain text only.

Key Features of This Base64 Tool

Encode text → Base64: Convert any text, including UTF-8 characters and emojis, into Base64.
Decode Base64 → text: Turn Base64 strings back into readable text where possible.
UTF-8 aware: Uses modern browser APIs to handle non-English and multi-byte characters correctly.
Base64 detection: Quickly check if the input looks like a valid Base64 string.
Size statistics: See approximate byte sizes and expansion ratio when encoding.
Copy & download: Copy the result to your clipboard or download it as a text file.
Privacy-friendly: All encoding/decoding runs in your browser – no data is sent to any server.

How to Use the Base64 Encode/Decode Tool

Paste or type your text or Base64 string into the Input box.
Click Encode to Base64 to convert text → Base64.
Click Decode from Base64 to convert Base64 → text.
Use Swap Input & Output to quickly reverse the direction.
Use Detect & Suggest Direction if you are not sure whether the input is Base64 or plain text.
Copy the result or download it as a file when you are done.

Common Use Cases

Embedding small images or files in HTML, CSS or JSON.
Debugging API payloads that contain Base64-encoded data.
Working with JWT tokens, configuration values or email attachments.
Converting sensitive snippets to Base64 before storing in text-based systems.

Use this Base64 tool together with other Developer & Encoding Tools on PowerSEOTools.online for a complete, browser-based workflow without installing additional software.