File to Base64 Encoder
Encode any file to Base64 text.
A file as text
Base64 encoding turns any file — an image, a document, any binary data — into a string of text that can travel through systems built for text. This encodes a file to Base64 in your browser, so the file never leaves your device.
Load a file to encode it as Base64.
Why turn a file into text
Base64 exists to solve a real problem: many systems and formats are designed for text and cannot safely carry raw binary data, so encoding a file as text lets it pass through them intact. This is why Base64 is used to embed files in emails, JSON, data URIs, and configuration where only text is allowed. The trade-off worth knowing is that Base64 makes the data larger, by roughly a third, since it represents binary using a limited set of text characters, so it is a tool for compatibility rather than efficiency and suits smaller files. It is genuinely useful for developers embedding a file in code or data, sending binary through a text-only channel, or storing file data in a text field. Encoding in the browser means even a sensitive file is converted locally without uploading, so the whole operation stays private on your own device.
File to Base64 Encoder FAQ
Why encode a file as Base64 text?
So it can pass through systems built for text — email, JSON, data URIs — that cannot safely carry raw binary data.
Does Base64 make the file bigger?
Yes, by roughly a third, since it represents binary with a limited set of text characters, so it suits compatibility and smaller files rather than efficiency.
Is my file uploaded?
No. The encoding happens in your browser, so the file never leaves your device.