Base64 Encoder / Decoder

Encode any text or file to Base64 and decode Base64 strings back to readable form.

Base64 Encoder converts arbitrary text or binary files into the Base64 representation that powers data URIs, JWT tokens, email attachments, and countless API headers — and decodes Base64 strings back into readable text or downloadable files. The encoding is the standard, RFC-compliant variant, so the output is interchangeable with what every backend language, browser, and HTTP client produces. Web developers use it constantly: embedding small SVG icons directly into CSS as data URIs to avoid extra HTTP requests, decoding the payload of a JWT to inspect user claims, building Authorization: Basic headers for quick API tests, and prepping image attachments for email APIs. Security engineers use it to inspect suspicious payloads, since malware and phishing attempts often shuttle data around in Base64 to slip past simple filters. Backend developers use it to debug content stored as Base64 in databases. The tool runs entirely in your browser, which is important because Base64 strings often contain secrets — API keys, session tokens, internal credentials — that you do not want to paste into a server-side converter.

How Base64 Encoder / Decoder works

Base64 Encoder / Decoder is a free browser-based utility from Salah Tools Hub. It is designed to give you an immediate result without an account, subscription, or upload to a remote server.

Enter your information into the tool after the page loads, review the result, and use the available copy or download controls. Your input stays on your device while the tool is running.