Input
hello
Output
aGVsbG8=
Encoding & Decoding
Base64 Encoder and Decoder
Encode and decode Base64 in the browser, with standard and URL-safe variants, automatic direction detection, and optional file-to-Base64 conversion. Useful for API debugging and local data prep.
Base64EncodingDeveloper
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Quick actions
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编码加解码
Base64 编解码
格式
状态：等待输入 输入大小：- 输出大小：- 膨胀率：-
Use cases
- Encode or restore Base64 fields while debugging APIs
- Convert small images or files to Base64 for embedding
- Decode Base64 content from configuration files
How to use
- Enter text or choose a file
- Choose encode or decode, or use auto-detect
- Copy the output
Example input and output
FAQ
Can it convert files to Base64?
Yes. Choosing a local file reads it and produces a Base64 string. Reading and conversion stay in the browser.
How does URL-safe Base64 differ from standard Base64?
URL-safe Base64 replaces + and / with - and _ and often omits trailing = padding, which is safer in URLs and filenames.
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