Encode text and files to Base64 — or decode Base64 back to text — instantly
FREQUENTLY ASKED QUESTIONS
What is Base64?
Base64 encodes binary data as ASCII text using 64 characters (A-Z, a-z, 0-9, +, /). It's used to embed images in HTML/CSS, transmit binary data in JSON, encode email attachments, and store credentials in HTTP headers.
Is Base64 encryption?
No. Base64 is encoding, not encryption. It's reversible by anyone without a key. Don't use it to secure sensitive data — use it only for encoding binary data for text-based protocols.
What is URL-safe Base64?
Standard Base64 uses + and / which have special meanings in URLs. URL-safe Base64 replaces + with -, / with _, and omits padding =. Use this when embedding Base64 in URLs or filenames.
How do I decode a Base64 image?
Paste the Base64 string (without the data:image/png;base64, prefix) into the input field and click Decode. The raw binary data will appear — or use a browser dev tools image preview.