Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 back to plain text.
About this tool
Base64 Encoder/Decoder converts text to Base64 and back for data URIs and embeds.
Handy for data URIs—not encryption. Base64-only “hiding” of tokens is reversed in one decode.
Tip — Encoding files makes strings very long; check size before embedding.
How to use
- 1Type or paste your text.
- 2Choose convert, format, compare, or other actions.
- 3Copy or download the result.
FAQ
Unicode/Korean supported?
Yes, typically via UTF-8. Verify round-trip decode.
Decode failed?
Missing padding, inserted whitespace, or URL-safe variants are common causes.
Encode image files?
Text mode is awkward for binaries—use image-specific tools instead.
Are files uploaded to a server?
No. Every tool runs entirely in your browser. Files and text you enter are never sent to our servers.