Base64 Encoder
Encode text and files to Base64 format
What is Base64 Encoder?
Base64 Encoder converts any text or binary data into a Base64 string — a safe format for transmitting data over text-based protocols like email and URLs.
When to use this tool
- Embedding images or files as data URIs in HTML/CSS
- Encoding credentials for HTTP Basic Authentication headers
- Transmitting binary data in JSON or XML payloads
- Storing binary data in text-only systems
How it works
Splits the input into 3-byte groups and maps each group to 4 Base64 characters using the alphabet A-Z, a-z, 0-9, +, and /. Padding with = is added if the input length isn't a multiple of 3.
Examples
About Base64 Encoder
Encode text and files to Base64 format It runs entirely in your browser — no files are uploaded to any server, ensuring complete privacy and instant results.
- •Encode and decode Base64, URL, and HTML entities
- •Supports text and file inputs
- •Instant conversion with no server upload
- •Works offline in your browser
Last updated: 2025-01-15
FAQ
Encode text and files to Base64 format
Yes, completely free. No signup required.
Yes. Runs entirely in your browser, no files uploaded.
Yes, works on any device with a modern browser.
No, everything runs in your browser.