Is Base64 encryption? Can I use it to hide passwords?

No — it is an encoding, not encryption. Anyone can decode base64 instantly. Never use it to "protect" secrets, passwords, or tokens.

Is this Base64 encoder really free?

Yes — unlimited encoding, decoding, and file conversion, no account, no payment.

Does it handle emoji and non-English text?

Yes. It encodes through UTF-8 bytes with TextEncoder/TextDecoder, so any Unicode text — emoji, Chinese, Arabic, everything — round-trips exactly.

Why is the Base64 output longer than my input?

Base64 represents every 3 input bytes as 4 output characters, so output is always ~33% larger than the input. That's inherent to the encoding, not a bug.

Why won't my Base64 string decode?

The usual causes are whitespace or line breaks in the copied text, a truncated copy (length must be a multiple of 4), missing = padding, or a URL-safe variant using - and _ instead of + and /. Check those first.

Does my data leave my browser?

No — encoding, decoding, and file conversion all run locally in your browser with JavaScript. Nothing is uploaded, sent, or stored.

Base64 Encoder & Decoder

Encode text to Base64 or decode Base64 back to text — plus convert any file to Base64. Unicode-safe, in your browser.

Runs 100% in your browser — your input never leaves this page. How we handle your data →

Runs 100% in your browser — your input never leaves this page.

Encode → Base64 Decode Base64 → text

Text to encode

0 characters in

Result

0 characters out

Convert a file to Base64

Any file type — the output is a full data URL you can paste into HTML or CSS.

Choose a file

No file chosen.

Your results will appear here.

Fill in the input above and run the tool to get started.

Honest limits

Base64 is an encoding, not encryption — anyone can decode it. Never use it to "protect" secrets or passwords.

How to use the Base64 Encoder & Decoder

Choose Encode (text → Base64) or Decode (Base64 → text) at the top.
Paste your text — the result converts live as you type, or press Convert for an explicit conversion.
Use Copy result to copy, Download result to save it as a file, and Clear to reset. For files, use Choose a file to get a ready-to-paste data URL.

Examples

Example

Encode Hello → SGVsbG8=. Decoding SGVsbG8= returns Hello exactly — including emoji and non-Latin text, which this tool handles safely.

What this tool doesn't do

Base64 is an encoding, not encryption. Anyone can decode it instantly — never use it to "protect" secrets, passwords, or tokens.
Base64 output is always ~33% larger than the input — it is not compression.
The decoder expects standard Base64 (A–Z, a–z, 0–9, +, /, =). URL-safe variants (using - and _) or strings with whitespace need cleaning first.

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Base64 Encoder & Decoder

Convert a file to Base64

How to use the Base64 Encoder & Decoder

Examples

Example

What this tool doesn't do

Frequently asked questions

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Base64 Encoder & Decoder

Convert a file to Base64

How to use the Base64 Encoder & Decoder

Examples

Example

What this tool doesn't do

Frequently asked questions

Is Base64 encryption? Can I use it to hide passwords? +

Is this Base64 encoder really free? +

Does it handle emoji and non-English text? +

Why is the Base64 output longer than my input? +

Why won't my Base64 string decode? +

Does my data leave my browser? +

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