Base64 / Base62 Encoder & Decoder
Encode or decode text using Base64, Base64 URL-safe, or Base62 — instantly in your browser.
Base64
Uses A–Z, a–z, 0–9, +, / and = padding. The standard encoding used in emails, images, and data URIs.
Base64 URL-safe
Same as Base64 but replaces + → - and / → _ and removes padding, making it safe for URLs and JWT.
Base62
Uses only A–Z, a–z, 0–9 — no special characters. Used in URL shorteners and compact identifiers.
What is Base64 Encoder & Decoder?
FileMint's Base64 Encoder & Decoder lets you instantly encode plain text or binary data into Base64 format, or decode Base64 strings back to their original form — entirely inside your browser. Base64 is the universal encoding used to safely transmit binary data over text-based channels like HTTP headers, JSON APIs, and email attachments....