What does this tool do?
Base64 Encode converts text or binary data into a Base64 string made only of safe ASCII characters. It is used to move data through text-based channels — embedding images in email, data URIs, HTTP Basic Auth headers and carrying binary data inside JSON.
How to use it
- Enter the text you want to encode or decode.
- The conversion happens automatically.
- Copy the result and use it safely.
When you need Base64
Whenever you must pass binary data through a medium that only accepts text: `data:` URI images embedded in HTML/CSS, MIME encoding of email attachments, `Authorization: Basic` headers, JWT segments and sending small files inside a JSON body. Base64 is NOT encryption — it is only encoding and is trivially reversible.
Frequently asked questions
Is Base64 encryption?
No. Base64 is only an encoding, not encryption. Anyone can decode it in one click. To protect sensitive data use real encryption (such as AES), not Base64.
Why is Base64 data ~33% larger?
Base64 represents every 3 bytes with 4 ASCII characters, so the output is about a third larger than the original. That is the cost of safe passage through text-based channels.
Is Base64 Encode free?
Yes. Base64 Encode and all 300+ tools on MagmaNex are completely free with no signup or account required.
Is my data safe?
Yes. Everything runs locally in your browser. The data you enter is never sent to a server, stored, or shared.
Does it work on mobile?
Yes. Base64 Encode works on phones, tablets and desktops — no app download needed.
🔒 Privacy: everything runs in your browser, your data is never sent to a server.