Base64 Encoder and Decoder - UTF-8, Base64URL, Data URL and Padding
Encode text to Base64, decode Base64 to UTF-8, switch URL-safe Base64, fix missing padding, wrap lines, create data URLs, and copy results in your browser.
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Base64 Encoder & Decoder: popular Google search intents
Most visitors search for base64 decoder online, base64 encoder online, Base64 to text, text to Base64, UTF-8 Base64, Base64URL, URL-safe Base64 decoder, missing padding fixes, and data URL conversion. The page keeps paste, encode, decode, copy output, and report copy in the first working area; by default the result replaces the input on mobile, while URL-safe, padding, line wrap, and data URL options support developer workflows without blocking the default action.
What this tool is for
Paste UTF-8 text, Unicode, emoji, an API token, a Base64 string, Base64URL text, or a data payload, then encode, decode, switch URL-safe or data URL options, and copy the result from the first screen.
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Continue with common ToolNest utilities
Base64 Encoder & Decoder is part of a wider browser toolbox. These links help users and crawlers move from this page into nearby daily tasks.
Frequently asked questions
Is Base64 Encoder & Decoder free?
Yes. ToolNest provides Base64 Encoder & Decoder as a free browser-based utility.
Does Base64 Encoder & Decoder require an account?
No account is required. Open the tool and use it directly in your browser.
Does Base64 Encoder & Decoder support Unicode and UTF-8 text?
Yes. The tool encodes pasted text as UTF-8 bytes before converting to Base64, and decodes valid Base64 bytes back to UTF-8 text. This avoids the common browser-only btoa/atob problem with non-Latin characters.
What is URL-safe Base64 in Base64 Encoder & Decoder?
URL-safe Base64, also called Base64URL, replaces + with - and / with _. Padding can also be removed for compact tokens. Use it for URLs, JWT-like tokens, query values, and filenames where regular Base64 characters may need escaping.
Can Base64 Encoder & Decoder fix missing padding or decode data URLs?
Yes. When decoding, ToolNest removes whitespace, recognizes data URL prefixes, converts Base64URL characters back to the standard alphabet, and adds missing = padding when the string length requires it.
How do I use Base64 Encoder & Decoder?
Open the Base64 Encoder & Decoder page, enter or paste your values, use the visible controls, and copy the result from the first working area. It is grouped with Encoding & Parsing for quick browsing.
Can I copy results from Base64 Encoder & Decoder?
Yes. ToolNest tools are designed around copy-ready output, so you can reuse the result in documents, spreadsheets, code editors, forms, or messages without creating an account.