Encode/decode text or files to Base64 with URL-safe mode and line wrapping
Processed client-side in your browser — files never leave your device.
Free, with no signup, account, or usage limits.
Works on any modern browser, including mobile.
About this tool
Base64 Encoder/Decoder (Advanced) helps you encode/decode text or files to Base64 with URL-safe mode and line wrapping. Processing runs locally in your browser — your input is not uploaded to ThothBox.
How to use
Open Base64 Encoder/Decoder (Advanced) and paste or type your input.
Choose any options that affect the output.
Run the tool or watch the live result update.
Copy or download the output.
FAQ
What does Base64 Encoder/Decoder (Advanced) do?
Encode/decode text or files to Base64 with URL-safe mode and line wrapping.
Is Base64 Encoder/Decoder (Advanced) private?
Yes for typical use: input is processed in your browser and is not uploaded to ThothBox.
Is Base64 Encoder/Decoder (Advanced) free?
Yes. It is free to use with no signup required.
How do I use Base64 Encoder/Decoder (Advanced)?
Open the Base64 Encoder/Decoder (Advanced) tool, then open Base64 Encoder/Decoder (Advanced) and paste or type your input.