Base64 Encoder

Base64 Encode Online — Free

Convert text — or a file — into Base64 encoding instantly, ready to paste wherever a Base64 string is needed.

How to Encode to Base64

Type or paste in your text and the Base64-encoded version appears instantly, ready to copy. If you're encoding a file instead, upload it and its Base64 representation is generated the same way.

What Base64 Actually Does

Base64 turns binary data into plain text made up of letters, numbers, and a couple of symbols — useful anywhere binary data needs to travel through a system that only handles text safely, like embedding an image directly inside HTML or CSS, or including data in a JSON payload or URL. It's worth being clear that Base64 is an encoding, not encryption — anyone can decode it back to the original just as easily, so it should never be used to protect sensitive information.

Good Uses for This Tool

Embedding a small image directly into HTML or CSS without a separate file request, encoding data to safely include in a URL or JSON field, preparing binary data for an API that expects text, or converting a file into a text-safe format for copying and pasting.

Is It Actually Private?

Yes. Encoding happens entirely in your browser — nothing you enter is sent to a server.