Free Encode Tools

The Base64 Encode Decode tool converts text and data to and from Base64, the standard for embedding binary data in text formats like JSON and email. The Base64 to Image Decoder turns encoded strings back into viewable images.

The URL Encode Decode tool percent-encodes query parameters and paths so links never break, while the Binary Hex Converter moves between binary and hexadecimal for low-level debugging and checksum work.

Encoding is a constant micro-task in development: preparing a JWT payload, embedding an image as a data URI, or fixing a broken query string. A one-click tool beats writing a throwaway script every time.

Privacy seals the deal. Tokens and API payloads often contain secrets, and processing them locally means they are never exposed to a third-party server.

Paste your text, data, or encoded string into the input, choose encode or decode, and copy the instant result. For images, paste the Base64 string to preview the decoded image immediately.

Decode before you debug. When an API returns a blob of Base64 or a mangled query string, decode it first. Most encoding bugs become obvious once you can read the underlying text.

Remember that encoding is not encryption. Base64 and URL encoding only change representation. Never rely on them to hide secrets; use real encryption for sensitive data.

Watch for double encoding. If percent signs appear as %25 or Base64 ends with unexpected padding, the data was likely encoded twice. Decode once more and check again.