Base64 Encode and Decode

Convert text to Base64 for APIs, emails and data URLs, or decode a Base64 string to see what is inside, all without your data leaving the browser.

How to use the Base64 Encode and Decode

  1. Type or paste your text into the box on the left.
  2. Adjust the options above if you need to. The result updates as you type.
  3. Click Copy result or Download to use your result.

What you can use it for

  • Decode API tokens and payloads
  • Embed small images as data URLs
  • Encode credentials for HTTP Basic auth

Private by design

The Base64 Encode and Decode runs entirely in your browser. Your text and files are never uploaded or stored on a server, so it is safe for work documents and personal information. It is free, with no sign-up and no limits on how often you use it.

Frequently asked questions

Is Base64 encryption?

No. Base64 is encoding, not encryption. Anyone can decode it, so never use it to hide secrets.

What is URL-safe Base64?

It replaces + and / with - and _ and drops the = padding so the string is safe in URLs and file names.

More code & data

CSV to JSON ConverterTurn spreadsheet exports into JSON for apps and APIs, or flatten JSON into CSV you can open in Excel or Google Sheets.dot.case ConverterTurn names in any format into lowercase words joined by dots, ready for config files and i18n keys.GraphQL FormatterTurn a one-line GraphQL query into a readable, properly indented one you can debug and share.Hex to Text ConverterDecode hex strings from logs, packets and files into text, or encode text into hex for code and debugging.HTML Formatter and MinifierMake tangled HTML readable, or shrink it for faster loading, without installing anything.HTML to Markdown ConverterMove content from websites and CMS editors into Markdown for docs, GitHub, Notion or static sites.JavaScript FormatterMake unreadable JavaScript easy to follow, with consistent formatting your team will recognise.JSON Formatter and ValidatorPaste raw JSON to check it is valid and read it with clean indentation.

You might also like

Pig Latin TranslatorTurn messages into Pig Latin for games, secret notes and classroom fun, or decode a friend's message back into English.Roman Numeral Date ConverterGet a wedding date, birthday or anniversary right in Roman numerals before it goes on a tattoo, ring or invitation.TikTok Font GeneratorGrab attention on TikTok with styled text in your bio, display name and captions.Wingdings TranslatorWrite secret-looking messages in Wingdings symbols that work anywhere, or decode Wingdings you have been sent.