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Base64 & URL Encoder/Decoder

Encode or decode text to Base64 and URL-encoding in your browser.

  • 🔄 Converter
  • ✓ Free
  • ✓ No sign-up
  • ✓ Private — runs in your browser
  • ✓ Any device

Why you’ll love Base64 & URL Encoder/Decoder

Instant & freeNo signup, no paywall, no limits — Base64 & URL Encoder/Decoder works the moment the page loads.
Completely privateEverything runs in your browser. Nothing you enter is ever uploaded or stored on a server.
Works on any deviceFully responsive and touch-friendly — use it on your phone, tablet or desktop.
Real-time conversionConverts instantly as you type — unit-aware and precise.

How to use it

  1. 01

    Open it

    No download and no login — the tool is ready right at the top of this page.

  2. 02

    Use it

    Enter your details or start interacting. Everything updates live as you go.

  3. 03

    Get your result

    Copy, download or share your result in a single tap. That’s it.

About Base64 & URL Encoder/Decoder

Base64 and URL encoding are essential techniques for working with text and data across the web. This browser-based tool lets you instantly base64 encode and decode text, or url encode and decode data without leaving your screen. Whether you're preparing API payloads, securing configuration files, or transforming data for transmission, this free converter handles both formats with a single click.

No signup required and your data never leaves your browser—every encoding and decoding operation happens entirely on your device. Paste your text, choose your format, and get instant results. The tool supports both directions: base64 encode to protect data, base64 decode to read encoded content, url encode for web-safe text, and url decode to reverse it.

Perfect for developers, IT professionals, and anyone working with APIs or web technologies. Copy results instantly with a single click, clear the fields and start over anytime, and seamlessly switch between Base64 and URL encoding. Since everything runs entirely in your browser, you can use it offline whenever you need it, and your sensitive data remains completely private on your device.

Popular uses

  • ✦ Encoding API authentication tokens and credentials for secure transmission in HTTP headers
  • ✦ Converting image files to Base64 for embedding directly in HTML or email without attachments
  • ✦ Preparing user input for safe inclusion in URL query parameters and web addresses
  • ✦ Decoding Base64-encoded data from API responses to read or process the original content
  • ✦ Creating URL-safe slugs and parameters for web applications and tracking systems

Frequently asked questions

How do I base64 encode text?
Paste your text into the input field, select Base64 mode, and click encode. The tool instantly converts your text to Base64 format, which is useful for encoding binary data, credentials, and files for safe transmission over text-based protocols like email or HTTP headers.
What's the difference between base64 and URL encoding?
Base64 uses 64 printable characters to represent any data and is commonly used for email attachments and API payloads. URL encoding replaces unsafe characters with % followed by hex values, making text safe for use in URLs and query parameters. Both are reversible transformations.
Is my data safe with this online tool?
Yes. This is a browser-based tool that runs entirely on your device with no backend server. Everything happens locally, so your data never leaves your computer and no information is stored or transmitted. You can even use it offline.
When do I need to url encode or url decode?
URL encoding is essential when putting user input into URLs or query strings—it converts spaces to %20 and other special characters to safe equivalents. URL decode reverses this to read the original text. Use url encode before building links with parameters, and url decode when parsing incoming URLs.
Is Base64 & URL Encoder/Decoder free to use?
Base64 & URL Encoder/Decoder is 100% free — no signup, no watermarks and no usage limits. It’s one of 200+ free tools we build and give away.
How accurate are the conversions?
Conversions use exact, standard ratios and update live as you type — accurate to many decimal places.

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