โ Frequently Asked Questions โ Base64 Encoder/Decoder
What is Base64 encoding used for?
Base64 is used to safely transmit binary data (images, files, binary strings) through text-based protocols. Common uses include embedding images in HTML/CSS using data URIs (no external file request needed), encoding file attachments in emails (MIME encoding), storing binary data in JSON or XML which only supports text, and transmitting binary data in URLs.
What is URL-safe Base64?
Standard Base64 uses + and / characters which have special meaning in URLs. URL-safe Base64 replaces + with - (hyphen) and / with _ (underscore), making the encoded string safe to include directly in URLs and query parameters without percent-encoding. Use URL-safe mode when you need to embed Base64 in a URL or filename.
Can I convert images to Base64?
Yes. Use the File/Image section โ drop any image file. The tool generates the full Base64 data URI (e.g. data:image/png;base64,...) which you can paste directly in HTML src attributes or CSS background-image properties. A preview of the image is shown to confirm correct encoding. This is useful for embedding small images directly in HTML without separate file requests.
Is Base64 the same as encryption?
No. Base64 is encoding, not encryption. It simply represents the same data in a different format โ anyone with the Base64 string can decode it immediately. It provides no security. For actual encryption, use the Text Encryptor tool (AES encryption). Base64 is often confused with encryption because it makes text unreadable at a glance, but it offers zero security protection.