Encode plain text string to Base64 format or decode Base64 strings.
How to Use Base64 Encoder/Decoder
Type or paste plain text into the "Encode" box to instantly see its Base64 output, or paste a Base64 string into the "Decode" box to reverse it.
The conversion updates live as you type - no button click needed.
Click the copy icon next to either box to grab the result.
Key Features & Practical Use Cases
Encoding small image files or SVGs into raw Base64 strings to embed directly into CSS files.
Decoding hidden Base64 payloads inside URLs or authentication headers to read their values.
Translating binary file buffers into safe ASCII text strings for JSON transmission.
Frequently Asked Questions
What happens if I paste invalid Base64 into the decode box?
You'll see a clear error instead of garbled output, since invalid Base64 can't be decoded to valid text.
Does it support Unicode/emoji in the text I encode?
Yes - UTF-8 text including emoji and non-Latin scripts is encoded/decoded correctly.
Can I encode an entire file, not just text?
This tool is built for text strings; for encoding binary files use a dedicated file-to-Base64 tool instead.
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