What is Text input?
Your original text, kept on this device. The tool does not modify a loaded source file.
Base64 Encoder / Decoder
Encode and decode UTF-8 text with standard or URL-safe Base64.
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No file selectedUTF-8 · Up to 1 MB
Base64 is an encoding, not encryption. Invalid byte sequences are rejected.
How to use Base64 Encoder / Decoder
Enter your input
Paste text, load a UTF-8 text file or choose Try example to get started.
Choose options and run
Encode and decode UTF-8 text with standard or URL-safe Base64.
Copy or download
Review the result, then copy it or save the TXT file.
Frequently asked questions
How do I use Base64 Encoder / Decoder?
Encode and decode UTF-8 text with standard or URL-safe Base64. Load the example or enter your own input, choose the options, then select Run.
Can I copy or download the result?
Yes. Copy the result or download it as a TXT file after processing.
What should I know before using this tool?
Base64 is an encoding, not encryption. Invalid byte sequences are rejected.
Is my input uploaded or saved?
No. Processing runs on this device. Inputs and results are not uploaded or saved by this tool.
About Base64 Encoder / Decoder
Here is what each format is for, and when converting input into a useful result is the right move.
What is Processed result?
Encode and decode UTF-8 text with standard or URL-safe Base64.
When you need it
Base64 is an encoding, not encryption. Invalid byte sequences are rejected.