Base64 Encode Decode
Encode UTF-8 text to Base64 and decode Base64 back to text. Free, private, and local-first.
Use Base64 Encode Decode
Encode UTF-8 text to Base64 or decode Base64 back to text.
Encode plain text or decode a Base64 string locally.
Quick answer
Base64 Encode Decode is a free online tool that helps you encode UTF-8 text to Base64 and decode Base64 back to text. It runs in your browser, so you can work with development data, text, files, or generated output without creating an account.
About Base64 Encode Decode
Base64 Encode Decode helps you encode UTF-8 text to Base64 and decode Base64 back to text. It is designed for focused local-first workflows where you need a quick result without creating an account or sending your input to a server.
Common uses include encoding credentials for http basic auth headers in local tests, decoding base64 payloads copied from logs, checking whether a copied value is valid base64.
Use the examples, usage notes, FAQ, and related tools below when you need to compare formats, build sample data, validate inputs, or move into the next step of the same workflow.
What this tool does
How to use Base64 Encode Decode
- 1
Paste plain text, an API token segment, or a Base64 string into the input.
- 2
Click Encode to convert text to Base64, or Decode to read Base64 as text.
- 3
Review errors if the input is not valid Base64.
- 4
Copy the converted result for headers, test fixtures, or debugging.
Examples
Plain text
Hello, World!
Base64
SGVsbG8sIFdvcmxkIQ==
UTF-8 text
CodeVella tools are local-first
Common header
Authorization: Basic <base64-credentials>
Use cases
- Encoding credentials for HTTP Basic Auth headers in local tests
- Decoding Base64 payloads copied from logs
- Checking whether a copied value is valid Base64
- Preparing text-safe values for APIs or configuration files
- Converting JSON with the dedicated JSON to Base64 tool
- Comparing Base64, URL encoding, HTML entities, and hashes
Related workflow
After using Base64 Encode Decode, many workflows continue with related tools for validation, conversion, cleanup, mock data, or final export.
Privacy and usage notes
CodeVella tools are designed to run locally in your browser. Your input is not uploaded to a server, and no account is required.
Generated test data is intended for development, QA, demos, and safe internal workflows.
Frequently asked questions
Is my data uploaded?+
No. This tool is designed to run locally in your browser.
Do I need an account?+
No signup is required for CodeVella tools.
Is Base64 encryption?+
No. Base64 is an encoding format, not encryption. Anyone can decode a Base64 string, so do not use it to protect passwords, secrets, or private tokens.
Does this support Unicode and emoji?+
Yes. The tool encodes and decodes UTF-8 text, so accented characters, symbols, and emoji are handled correctly in modern browsers.
Why does Base64 output look longer than the original text?+
Base64 usually increases size by about one third because it converts binary-safe data into plain text characters that are safe to copy, store, or transmit.