What is the difference between Standard and URL-safe Base64?

Standard Base64 uses '+' and '/' characters which are not safe in URLs. URL-safe Base64 replaces them with '-' and '_' so the encoded string can be safely used in URLs and filenames.

Can I decode any Base64 string?

Yes, as long as the Base64 string is valid. If it contains invalid characters, the tool will display a decoding error.

CONVERTER TOOLNew

Base64 Encoder & Decoder

Encode plain text into Base64 format or decode Base64 strings back to readable UTF-8 text. Includes URL-safe encoding options for developer workflows.

Processed inside browser

•No Sign-up•100% Free Forever

Mode

Variant

Plain Text Input

Key Features & Performance

Encode text to Standard or URL-safe Base64

Decode Base64 back to plain text instantly

Handles Unicode and special characters

One-click copy to clipboard

How to Use Base64 Encoder / Decoder in 3 Simple Steps

1Step 01

Enter Your Text

Paste the plain text you want to encode, or paste a Base64 string you want to decode.

2Step 02

Choose Encode or Decode

Click 'Encode' to convert text to Base64, or 'Decode' to convert Base64 back to plain text.

3Step 03

Copy the Result

Click the 'Copy' button to copy the result to your clipboard instantly.

Why Use Our Base64 Encoder / Decoder?

Unlike traditional file conversion portals that upload your private files to unknown third-party cloud servers, ToolDolfen leverages client-side browser computing. Your computer or phone processes the data directly, giving you complete privacy and instant completion speeds.

Zero Server Uploads

Files remain inside your device memory. Zero risk of data leak, profiling, or unauthorized inspection.

Zero Latency Speed

No network upload waiting times or server queue delays. Processing begins instantaneously in your browser.

Frequently Asked Questions

Key details about Base64 Encoder / Decoder and privacy assurances

Base64 is a binary-to-text encoding scheme that converts binary data into an ASCII string. It is commonly used to embed binary data in text-based formats like JSON, XML, and HTML.

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