Is encoding the same as encryption or hashing?

No. Encoding is reversible representation and provides no confidentiality. Encryption protects data with a key, while hashing produces a digest that is generally intended to be one-way.

Do these encoding tools upload my input?

The current tools perform their transformations in your browser and do not submit entered values or selected images to a conversion API. Clipboard history, extensions, page scripts, and shared devices can still expose sensitive input.

Encoder Online

Encode or decode Base64, URL components, hexadecimal, binary, and JSON strings in one browser-based workbench, with dedicated tools for HTML, Unicode, JWTs, and images.

Which online encoder should I use?

Use the workbench on this page for quick Base64, URL-component, hexadecimal, binary, or JSON-string conversion. Choose the representation required by the system that will consume the result, or open a dedicated tool when you need format-specific options.

Base64 converts text to and from Base64; Image to Base64 creates a data URI for an image.
URL Encoder percent-encodes a full URL or one URL component.
HTML Entity handles characters used in HTML source.
Unicode Escape represents code points with escape sequences, while JSON String Escape prepares or reads string content used inside JSON.
HEX Encoder and Binary Encoder expose character data as hexadecimal or bit values.
JWT Decoder displays a token's Base64url-encoded header and payload for debugging, but decoding does not verify its signature or prove its claims are trustworthy.

Encoder online workbench

Encode or decode UTF-8 text as Base64, a URL component, hexadecimal bytes, binary bytes, or JSON string content. Conversion runs in this browser.

Format

Input

Output

Base64 Encoder/Decoder

Encode or decode Base64 strings

URL Encoder/Decoder

Encode or decode URL strings

HEX Encoder/Decoder

Encode or decode text to/from hexadecimal

Binary Encoder/Decoder

Encode or decode text to/from binary

JWT Decoder

Decode and inspect JWT tokens

HTML Entity Encoder/Decoder

Encode or decode HTML entities

Unicode Escape Encoder/Decoder

Convert text to and from Unicode escape sequences

JSON String Escape

Escape and unescape JSON string content

Image to Base64

Convert images to Base64 data URIs

Encoding is not encryption or hashing

Encoding changes a value's representation so compatible software can reverse it; it is not a security control. Encryption uses a key to protect confidentiality, while hashing produces a digest intended to be one-way. Base64, percent encoding, HTML entities, hexadecimal, binary, Unicode escapes, and JSON escaping do not hide secrets. Use encryption when confidentiality is required, a keyed message-authentication code or digital signature when authenticity and integrity are required, and a dedicated salted, deliberately slow password-hashing scheme for stored passwords.

Client-side processing and privacy

These encoding and decoding tools run in the current browser. Text transformations use browser JavaScript, and image conversion uses FileReader instead of uploading the selected file to a conversion service. That client-side boundary reduces routine data transfer, but it does not make sensitive material safe on every device. Clipboard history, browser extensions, third-party page scripts, screen sharing, or a shared computer can expose input. Do not paste production credentials, private keys, session tokens, or confidential JWT claims.

Frequently asked questions

Which online encoder should I use?: Use this page for Base64, URL-component, hexadecimal, binary, or JSON-string conversion. Use HTML entities for HTML source, Unicode escaping for code points, JWT Decoder for token inspection, and Image to Base64 for image data URIs.
Is encoding the same as encryption or hashing?: No. Encoding is reversible representation and provides no confidentiality. Encryption protects data with a key, while hashing produces a digest that is generally intended to be one-way.
Do these encoding tools upload my input?: The current tools perform their transformations in your browser and do not submit entered values or selected images to a conversion API. Clipboard history, extensions, page scripts, and shared devices can still expose sensitive input.

Sources & references

Primary references: RFC 4648: Base-N Encodings; WHATWG URL Standard: Percent-encoded bytes; NIST SP 800-63B: Authentication and Authenticator Management.

Last reviewed: 2026-07-11

About Encoder Online

This encoder online workbench and its dedicated tools are designed to help developers work more efficiently. All tools are free to use, require no registration, and process data client-side for maximum privacy.