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Free Online Encoder & Decoder Tools

Encode and decode data online: Base64, URL encoding, HTML entities, hashing (MD5, SHA-256), JWT, and more.

57 tools available

B64

Base64 인코더/디코더

텍스트를 Base64로 인코딩, Base64 디코딩

%20

URL 인코더/디코더

URL 구성요소와 쿼리 매개변수 인코딩/디코딩

#

해시 생성기

텍스트에서 MD5, SHA-1, SHA-256, SHA-512 해시 생성

🔐

멀티 해시 생성기

텍스트 또는 파일에서 MD5, SHA-1, SHA-256, SHA-384, SHA-512 해시를 동시 생성

JWT

JWT 디코더

JSON Web Token 디코딩 및 헤더, 페이로드, 서명 확인

&;

HTML 엔티티 인코더

HTML 엔티티 및 특수 문자 인코딩/디코딩

🖼️

이미지 Base64 변환

이미지를 Base64 문자열과 data URI로 변환. 드래그 앤 드롭

\

Escape / Unescape

HTML, JavaScript, JSON 이스케이프/언이스케이프

📜

PEM / 인증서 디코더

PEM 인증서 디코딩

🔒

Bcrypt Hash 생성

비용 조절 가능한 bcrypt 해시 생성

Aa

ASCII Text Converter

Convert between ASCII codes and text characters with reference table

M5

Md5 Hash Generator

Md5 Hash Generator - Free online tool for Hash generation (MD5, SHA). Fast, secure, and easy to use.

256

Sha256 Hash Generator

Sha256 Hash Generator - Free online tool for Hash generation (MD5, SHA). Fast, secure, and easy to use.

S1

Sha1 Hash Generator

Sha1 Hash Generator - Free online tool for Hash generation (MD5, SHA). Fast, secure, and easy to use.

512

Sha512 Hash Generator

Sha512 Hash Generator - Free online tool for Hash generation (MD5, SHA). Fast, secure, and easy to use.

B→

Base64 Encoder

Encode text to Base64 format

→B

Base64 Decoder

Fast Base64 decoder for text and binary data

S→

String To Base64

String To Base64 - Free online tool for Base64 encoding and decoding. Fast, secure, and easy to use.

JD

Jwt Token Decoder

Jwt Token Decoder - Free online tool for JWT token decoding. Fast, secure, and easy to use.

JP

Jwt Parser

Jwt Parser - Free online tool for JWT token decoding. Fast, secure, and easy to use.

JV

Jwt Validator

Jwt Validator - Free online tool for JWT token decoding. Fast, secure, and easy to use.

%←

Url Decoder

Url Decoder - Free online tool for URL encoding/decoding. Fast, secure, and easy to use.

%→

Url Encode

Url Encode - Free online tool for URL encoding/decoding. Fast, secure, and easy to use.

%%

Percent Encoding Tool

Percent Encoding Tool - Free online tool for data processing. Fast, secure, and easy to use.

⚔️

Md5 Vs Sha256

Md5 Vs Sha256 - Free online tool for MD5 hashing. Fast, secure, and easy to use.

⚔️

Base64 vs URL Encoding

Compare Base64 and URL encoding with side-by-side examples

⚔️

Jwt Vs Session

Jwt Vs Session - Free online tool for JWT token decoding. Fast, secure, and easy to use.

🖼️

Base64 이미지 변환기

이미지를 Base64 문자열로 변환하거나 Base64를 이미지로 변환

JWT

JWT 디코더 온라인

JWT 토큰을 무료로 온라인 디코딩

&;

HTML 엔티티 인코더/디코더

명명된 엔티티와 숫자 엔티티를 지원하는 HTML 엔티티 인코딩/디코딩

🖼️

이미지를 Base64로 인코더

이미지를 Base64 문자열과 Data URI로 변환, 드래그 앤 드롭 지원

#️⃣

Online Hash Generator

Online Hash Generator - Free online tool for Hash generation (MD5, SHA). Fast, secure, and easy to use.

B←

Base64 Decoder Online

Free online Base64 decoder with instant results

B🖼

Base64 to Image

Convert Base64 image strings to viewable and downloadable images

01

Text To Binary

Text To Binary - Free online tool for Text processing. Fast, secure, and easy to use.

B→

Base64 Encode Online

Free online Base64 encoder for text and files

U🔗

Url Shortener Tool

Url Shortener Tool - Free online tool for URL encoding/decoding. Fast, secure, and easy to use.

🖼️

Base64 Image Decoder

Convert Base64 image data back to image files

🔑

Jwt Debugger

Jwt Debugger - Free online tool for JWT token decoding. Fast, secure, and easy to use.

#️⃣

String Hash Generator

String Hash Generator - Free online tool for Hash generation (MD5, SHA). Fast, secure, and easy to use.

🔐

JWT Generator

Generate JWT tokens

🔓

Base64 Decode

Decode Base64 encoded text back to plain text

🔐

Base64 Encoder/Decoder

Encode and decode Base64 in one tool with bidirectional conversion

🔗

Url Encode Decode

Url Encode Decode - Free online tool for URL encoding/decoding. Fast, secure, and easy to use.

🖼️

Base64 Image Encoder

Convert images to Base64 and Base64 to images

🔤

Html Encoder

Html Encoder - Free online tool for HTML processing. Fast, secure, and easy to use.

#️⃣

Sha256 Hash

Sha256 Hash - Free online tool for Hash generation (MD5, SHA). Fast, secure, and easy to use.

🔗

Url Encoder

Url Encoder - Free online tool for URL encoding/decoding. Fast, secure, and easy to use.

🔓

SAML 디코더

SAML 응답 및 요청 디코딩 및 검사

📦

Protobuf 디코더

Protocol Buffers 바이너리 데이터 디코딩

🔓

Certutil Base64 Decoder

Decode certutil Base64 encoded strings and certificates online. Convert Base64 from environment variables, certificates, and command-line output.

B32

Base32 Encoder/Decoder

Encode/decode Base32 strings

01

Binary to Text

Convert between binary and text

···

Text to Morse Code

Convert text to Morse code and back

B58

Base58 Encoder/Decoder

Encode and decode Base58 strings

🎨

SVG to CSS Converter

Convert SVG to CSS background-image data URI

🔣

HTML Entity Decoder

Encode/decode HTML entities

About Free Online Encoder & Decoder Tools

DevToolBox provides a collection of free online developer tools to help you efficiently complete everyday development tasks. This category includes 57 tools, all running directly in your browser with no installation required. Your data stays on your device and is never sent to our servers, ensuring complete privacy.

All tools are completely free with no registration or login required. Available in 15 languages for developers worldwide.

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