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> Encoding and decoding strings to Base64 format.
> Useful for data transfer, tokens, images.
Explore the most common scenarios for Base64 Encoder below. Each page is a focused calculator with worked examples and edge-case guidance.
Decode base64 strings back into readable text format instantly. Free online base64 decoder for developers.
Decode StringEncode images (PNG, JPG, WebP) directly into Base64 data URIs. Essential for embedding small images directly into HTML or CSS.
Convert Image to Base64Convert PDF documents into Base64 format for secure API transmission or embedding directly into web pages.
Convert PDF FileSafely decode HTTP Basic Authorization headers. Extract the base64 encoded username and password combo easily.
Extract CredentialsURL Encoder
Encode and decode URL components or form values with UTF-8-safe browser processing.
JWT Decoder
Decode JWT header and payload locally, inspect exp/iat/nbf claims, and debug bearer tokens without uploading them.
JSON Formatter
Validation, formatting and syntax highlighting for JSON.
Password Generator
Cryptographically secure password generator.