Encoder / Decoder

FeaturedSecurity & Encryption

Encode and decode Base64, URL, HTML, Unicode, and more.

Encoding Format

Standard Base64 encoding

Plain Text

Encoded Output

What is Encoder / Decoder?

An Encoder/Decoder is a utility that converts text between plain form and encoded representations such as Base64, URL encoding, HTML entities, Unicode escape sequences, hexadecimal, and binary. All conversions happen in the browser — your data never leaves your device.

How to use Encoder / Decoder

Select the encoding format

Choose Base64, Base64 URL-safe, URL Encode, HTML Entities, Unicode Escape, Hex, or Binary from the format grid.

Choose direction

Select Encode (plain → encoded) or Decode (encoded → plain) using the toggle.

Paste your input

Type or paste the text you want to convert into the input area.

Read the output

The encoded or decoded result appears instantly in the output area. Inline error messages show if the input is invalid for the chosen format.

Use "All Encodings"

In Encode mode, the All Encodings panel shows every format simultaneously — great for comparing outputs.

Who uses Encoder / Decoder?

API authentication

Backend developers

Encode credentials, API keys, and binary payloads to Base64 for HTTP Basic Auth headers and data URIs.

Web development

Frontend developers

URL-encode query parameters and HTML-encode user content to prevent XSS vulnerabilities in web applications.

Debugging encoded data

QA engineers

Decode Base64 strings returned by APIs to inspect binary data, images, or nested JSON payloads during testing.

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FAQ

What encoding formats are supported?+

Base64, Base64 URL-safe, URL encoding, HTML entities, Unicode escape, Hex, and Binary are all supported.

Is Base64 the same as encryption?+

No. Base64 is encoding, not encryption. It is reversible and provides no security. Use it for data formatting, not security.

Can I encode binary files?+

Currently the tool handles text-based encoding. Binary file encoding support is planned for a future update.