Encoding & Decoding

Base64 Encoder and Decoder

Encode or decode UTF-8 text and local files.

Processed locally in your browser

Include padding

Text to encode

Input size: 0 B. Unicode text and emojis are encoded as UTF-8.

Result · 0 B

Run the encoder or decoder to see the result.

Text to encode

Input size: 0 B. Unicode text and emojis are encoded as UTF-8.

How to use this tool

Select Text or File mode.
Choose encode/decode and the Base64 variant for text.
Control padding when encoding standard or URL-safe Base64.
Copy or download the result; files never leave the browser.

Examples

Unicode text

Encode Tamil text or emojis without corrupting UTF-8.

URL-safe values

Use Base64URL for values placed in URL paths, queries, or JWT segments.

Frequently asked questions

Are files uploaded?

No. Files are read, encoded, previewed, and downloaded entirely inside this browser tab.

Will decoded HTML or JavaScript run?

No. Decoded text is rendered as plain text, and file previews are limited to common safe image formats.

About this tool

Encode and decode UTF-8 text, Base64URL values, and local binary files. Generate data URLs, inspect file metadata, and safely preview supported images without uploading content.

Encoding & Decoding

Base64 Encoder and Decoder

Encode or decode UTF-8 text and local files.

Processed locally in your browser

Include padding

Text to encode

Input size: 0 B. Unicode text and emojis are encoded as UTF-8.

Result · 0 B

Run the encoder or decoder to see the result.

Text to encode

Input size: 0 B. Unicode text and emojis are encoded as UTF-8.

How to use this tool

Select Text or File mode.
Choose encode/decode and the Base64 variant for text.
Control padding when encoding standard or URL-safe Base64.
Copy or download the result; files never leave the browser.

Examples

Unicode text

Encode Tamil text or emojis without corrupting UTF-8.

URL-safe values

Use Base64URL for values placed in URL paths, queries, or JWT segments.

Frequently asked questions

Are files uploaded?

No. Files are read, encoded, previewed, and downloaded entirely inside this browser tab.

Will decoded HTML or JavaScript run?

No. Decoded text is rendered as plain text, and file previews are limited to common safe image formats.

About this tool

Encode and decode UTF-8 text, Base64URL values, and local binary files. Generate data URLs, inspect file metadata, and safely preview supported images without uploading content.