Encoding Tools
Base64 and URL encoding and decoding.
Why encoding matters for developers
Base64 and URL encoding are used everywhere: auth headers, data URIs, query strings, and API payloads. Base64 turns binary data into safe ASCII text so it can be embedded in JSON, XML, or HTML. URL encoding (percent-encoding) makes sure special characters in query parameters or form data do not break URLs or parsing. This hub groups the encoding tools in one place so you can encode or decode without hunting through the app.
All tools run in your browser. Paste text or Base64 string, choose encode or decode, and get the result instantly. No server involvement means no logging or storage of your data—important when dealing with tokens or sensitive strings.
Base64 vs URL encoding
Base64 is for representing binary or arbitrary byte sequences as text—e.g. image data in JSON, certificates, or encoded payloads. The Base64 tool lets you encode text or decode Base64 back to readable form. URL encoding is for strings that go in URLs or form data: spaces become %20, ampersands %26, and so on. Use URL Encode before putting a string in a query parameter and URL Decode when you receive or need to parse an encoded value. Both are reversible and deterministic; the tools here give you a fast, client-side way to perform either operation.
Tools in this category
Frequently Asked Questions
What encoding tools are available?
The encoding tools category includes Base64 encode, Base64 decode, and a combined Base64 tool that toggles mode, plus URL encode and URL decode. All run in your browser.
When should I use Base64?
Base64 is used to represent binary data as text—e.g. embedding images in HTML/JSON, or sending binary in APIs. Use the encoder for text or binary input and the decoder to get back the original.
What is URL encoding?
URL encoding (percent-encoding) replaces special characters in strings so they can be safely used in URLs or form data. Use URL Encode to encode and URL Decode to decode.
Is my data sent to a server?
No. All encoding and decoding happens in your browser. Nothing is uploaded or stored.
Can I encode binary files?
The Base64 tool accepts text input. For binary files, use a local tool or paste Base64 output from another source; the decoder will decode it in the browser.