Developer & Data
Base64 Converter
Easily encode or decode data using Base64 encoding.
FreeRuns in your browserNo sign-up
How to encode and decode Base64 data
- Step 1: Paste your plain text into the encoder box, or paste Base64 encoded string into the decoder box.
- Step 2: Toggle between UTF-8 text mode and binary file mode as needed.
- Step 3: Click the Copy button to grab your converted output immediately.
Base64 conversion tools
- Bi-directional encoding and decoding with full UTF-8 Unicode character support.
- Supports data-URI creation for embedding images and fonts directly into CSS or HTML.
- Includes URL-safe Base64 encoding mode (replacing + and / with - and _).
- Real-time output updates with zero latency.
Frequently asked questions
What is Base64 encoding used for?
Base64 represents binary data in an ASCII string format, allowing files like images and fonts to be safely transmitted in JSON, HTML, or email.
Does Base64 provide data encryption or security?
No, Base64 is an encoding format, not encryption. Anyone can decode a Base64 string back into plain text in seconds.
What is URL-safe Base64?
Standard Base64 uses plus (+) and slash (/) characters which have special meaning in URLs; URL-safe mode substitutes them with hyphen and underscore.