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Encode text to Base64 or decode Base64 strings back to plain text — instantly and privately in your browser.
Base64 Encode & Decode
Encode to or decode from Base64 string formats instantly.
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Why use our Base64 Encoder / Decoder?
Encode & Decode
Instantly encode any text string to Base64 or decode Base64 back to the original plain text.
100% Private
All encoding and decoding is done in your browser. Nothing is sent to any server.
Real-time Conversion
Results update as you type — no need to click a button or submit a form.
One-click Copy
Copy the encoded or decoded output to your clipboard instantly with a single click.
What is Base64 Encoding?
How to Use This Tool
Frequently Asked Questions
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data using a set of 64 printable ASCII characters. It's commonly used in email attachments, data URIs, and API token transport.
Is Base64 a form of encryption?
No. Base64 is an encoding, not encryption. It's easily reversible and provides no security. Never use Base64 as a security measure — use proper encryption algorithms instead.
Why do APIs use Base64?
Base64 allows binary data (like images, files, or certificates) to be safely embedded in text-based formats like JSON, HTML, XML, or email headers that don't support raw binary.
What does 'padding' mean in Base64?
Base64 output is padded with '=' characters to make its length a multiple of 4. Some implementations strip padding — both forms are valid and widely supported.