Quickly encode and decode text, strings, and files to Base64 format online with instant live preview.
Encode text as Base64 or decode Base64 back into text. Choose the URL-safe option when needed, or use the file tab to produce a file data URL. This browser utility changes representation; it does not encrypt the input.
Step-by-Step Walkthrough
Step 1
Choose text encode/decode mode or select a file in the file tab.
Step 2
Enter the text and choose whether URL-safe output is needed.
Step 3
Check the result and copy the encoded value or decoded text.
Pro Tip for Best Output Quality
Base64 increases data size. Large file data URLs can consume substantial browser memory.
Key Capabilities & Features
Text encoding
Convert typed text into Base64.
Text decoding
Read a valid Base64 text value.
URL-safe option
Use the alternate characters and padding behavior provided by the switch.
File data URL
Select a file and copy its encoded data URL.
Recommended Creative Use Cases
Frequently Asked Questions
Ready to try Base64 Encoder / Decoder?
Open the tool directly inside your browser. Completely free, zero file uploads, and no watermarks on your exports.