Encoding
Base64 encode/decode
Encode text to Base64 and decode it back to readable form.
Base64 workspace
Edit, inspect, copy
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More Base64 guides
Base64 Encoder and Decoder OnlineEncode text to Base64 and decode Base64 back to readable text online. Handles Unicode correctly and runs entirely in your browser — no upload.How to Encode and Decode Base64 OnlineStep-by-step: how to encode text to Base64 and decode Base64 strings back to text online, with correct handling of Unicode characters.Base64 Encoding ExplainedHow Base64 encoding works under the hood: grouping bits into 6-bit chunks, the 64-character alphabet, and why output is padded with equals signs.Common Base64 MistakesMixing up Base64 and Base64url, missing padding, whitespace in the string and treating Base64 as encryption — the common Base64 mistakes and their fixes.Base64 and HTTP Basic AuthHow HTTP Basic authentication uses Base64 to encode credentials, how to build and decode the Authorization header, and why it needs HTTPS.Base64 vs Base64url: What Is the Difference?Base64 vs Base64url explained: the two characters that differ, why Base64url exists, and where each variant is used — JWTs, URLs and filenames.
Encoding
base64 encoder online on DevToolGrid
Base64 encode/decode is built for the search intent behind "base64 encoder online": a fast, browser-based developer tool that helps with API debugging, data formatting and everyday coding tasks without sign-up.
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Use it when you need quick results for base64 decoder online, encode base64, decode base64. The page has its own URL, localized metadata and related tools so developers can bookmark it, share it and return to the same workflow.