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OpenEncode text to Base64. - runs entirely in your browser. Free, fast and private.
Add UTF-8 strings or binary represented as text.
Bytes convert to standard Base64 alphabet.
Line wrapping can be toggled for long payloads.
Paste into headers, data URLs, or config files.
APIs sometimes insist on a Base64 field for a small binary or a UTF-8 string. Base64 Encoder turns text into the standard alphabet so you can paste the value into JSON, headers, or config without writing a one-liner script.
Encode when you need data URLs for tiny assets, Basic auth practice strings, or embedding short payloads in JSON. Remember the ~33% size increase: large files belong in multipart or object storage, not Base64 fields.
Pitfall: confusing standard Base64 with URL-safe Base64. If the value will sit in a path or query string, switch to the URL-safe converter instead of hand-replacing characters.
Tip: after encoding, validate round-trip with Base64 Decoder on a copy of the output.
Encoding runs entirely in the page you have open. The plaintext you type is not posted to our servers as part of the encode step.
Related: Base64 Decoder
Processes data instantly with no server round-trips.
Your data never leaves your browser. Nothing is uploaded.
Works in any modern browser. Nothing to download or install.
No limits, no sign-up, no credit card required.
Works on desktop, tablet and mobile devices.
Beautiful in both themes. Your preference is saved.
Keyboard shortcut
Wrap short UTF-8 or token strings for Base64-typed API fields.
Encode small snippets when a data: URL is the pragmatic option.
Skip opening a shell for a one-off encode during debugging.
Answers for this tool. For site-wide help, open the FAQ hub.
Base64 Encoder encode text to base64. Output stays in your browser for quick iteration.
Prefer redacted samples. Even with local processing, treat prod credentials carefully and rotate anything accidentally shared.
No. Generators and linters produce text for you to copy into Git, CI, or consoles - they do not deploy for you.
Always run official CLIs (kubectl, terraform plan, actionlint, etc.) on the final files after using Base64 Encoder as a starting point.
Syntax may vary across Kubernetes/Terraform/GitHub Actions versions. Adjust generated snippets to your runtime version.
After the page loads, most authors work offline. Keep a local copy of critical manifests.
Use Sample to learn the format, edit, then Download/Copy into your editor.
Request it via Contact with the platform and version you use.