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Traditional Chinese devices (Taiwan, Hong Kong) now open in Traditional Chinese. Minor stability improvements.
Encode and decode Base64 for text and images. Fast, offline, developer-friendly.
Base64 Tool is a fast, offline Base64 encoder and decoder built for developers and anyone who works with encoded data. Convert text and images to and from Base64 right on your phone — no internet, no servers, no data leaving your device. What it does • Text to Base64 and Base64 to text (UTF-8) • Image to Base64: pick an image and get the Base64 string • Base64 to image: paste a string and preview the decoded image • URL-safe Base64 (RFC 4648) with optional padding removal • Data URI output (data:image/png;base64,...) for embedding • One-tap copy and paste Why developers use it • API tokens, Basic Auth headers, and data encoding on the go • Embed images directly into HTML, CSS, or JSON as Data URIs • Quickly check or debug an encoded string without opening a laptop • A tool you reach for again and again — now always in your pocket Privacy first Everything runs locally on your device. Your text and images are never uploaded or shared. 100% offline. Simple and clean • Light and dark themes • Clear two-tab layout: Text and Image • Monospace output that's easy to read and select This app is ad-supported with a small banner.