Encode text or a file to Base64, or decode Base64 back to text.
Keep going with what you just made.
Hello, GenRise!SGVsbG8sIEdlblJpc2UhEncode ↔ decode Base64
Sample output — your files never leave your device.
Paste your text, hit encode — the Base64 output appears instantly, ready to copy. The same flow decodes Base64 back to text.
Yes — switch to file mode and drop the file in. The Base64 string can be embedded directly in HTML, CSS or JSON as a data URI.
No — it's a reversible encoding, not encryption. Anyone can decode it. Never use Base64 alone to protect sensitive data; it only changes how bytes are represented.
Base64 packs 3 bytes into 4 characters, so output is roughly 33% larger than the input. That's the cost of representing binary data as text-safe characters.
No — encoding uses built-in browser APIs locally. Credentials and files you convert never leave your device.
Yes. Base64 Encoder / Decoder is completely free on GenRise, with no limits, watermarks, or hidden paywalls.
No. Every GenRise tool works instantly in your browser — no account, email, or sign-up required.
No. Base64 Encoder / Decoder runs entirely on-device using your browser, so your files are never uploaded or stored anywhere. All processing happens locally.
Base64 Encoder / Decoder uses your browser's built-in capabilities — Canvas, WebAssembly, and File APIs — to process files locally. Encode text to Base64 or decode Base64 back to text. Simply open the tool, select your file, and the result is generated instantly on your device.
Yes. Since Base64 Encoder / Decoder processes everything in your browser, your files never leave your device. There is no server-side storage, no tracking of file contents, and no data collection.
Yes. Base64 Encoder / Decoder works on any modern browser, including mobile devices. It is fully responsive and optimized for both desktop and mobile use.
GenRise Base64 Encoder / Decoder converts in both directions: encode plain text or an entire file into a Base64 string, or decode Base64 back to readable text. It's the utility behind data URIs, Basic auth headers, email attachments and embedded assets — and unlike server-side encoders, whatever you encode stays on your device, which matters when the payload is a credential or a file you shouldn't transmit.
Base64 Encoder / Decoder runs entirely in your browser. Anything you enter or upload is processed locally and never sent to a server. There is no account required, no tracking of your content, and no data collection.