What is Base64 encoding?

Base64 is an encoding scheme that converts binary data to a text format using 64 characters. It is commonly used to embed images in HTML, encode email attachments and store binary data in JSON.

Is Base64 the same as encryption?

No. Base64 is encoding, not encryption. Anyone can decode a Base64 string without any key. Never use it to secure sensitive data — use actual encryption for that purpose.

What is URL-safe Base64?

Standard Base64 uses the characters + and / which have special meaning in URLs. URL-safe Base64 replaces + with - and / with _ so the encoded string can be used safely in URLs and filenames.

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Privacy first: All encoding and decoding happens entirely in your browser using JavaScript. Nothing is sent to our servers. Base64 is an encoding scheme, not encryption — do not use it to secure sensitive data.