Base64 Encoder Decoder
Encode and decode Base64 for text and images. Fast, offline, developer-friendly.
About Base64 Encoder Decoder
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.
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