Base64 Encode / Decode
Convert text to Base64 and back, with full Unicode support. You can also turn a small file into Base64 or a data URI.
Runs in your browser — nothing is uploadedMax 5 MB. Stays on your device.
How to use Base64 Encode / Decode
- Choose Encode or Decode.
- Type or paste your text — the result updates instantly.
- Copy the result.
Questions
Is Base64 encryption?
No. Base64 is an encoding, not encryption — anyone can decode it. Don’t use it to protect secrets.
What is URL-safe Base64?
A variant that replaces “+” and “/” with “-” and “_” and drops the “=” padding, so the value can be used in URLs and filenames.
Is there a file size limit?
Files up to 5 MB can be encoded. Everything happens in your browser; files are not uploaded.