Encoding Toolkit — 31 Free Online Encoding & Decoding Utilities

Encoding Toolkit

31 client-side utilities — Base64, URL encoding, ASCII, Unicode, UTF-8/16, Binary, Hex, Hash & more

Base64

URL Encoding

Character Encoding

Hash & Checksum

Base64 EncoderUTF-8 safe — handles emoji & non-ASCII

Plain Text Input

Base64 Output

Base64 Decoder

Base64 Input

Decoded Text

Base64 Image EncoderConverts any image to an embeddable data URI

Click or drag & drop an image PNG, JPG, GIF, WebP, SVG…

Data URI Output

Base64 Image DecoderPaste a data URI or raw Base64 image string

Data URI or Base64 Input

Paste a data URI or Base64 image string above.

URL-safe Base64 EncoderReplaces + and / with - and _, removes padding =

Plain Text Input

Base64url Output

URL-safe Base64 DecoderAccepts both padded and unpadded Base64url

Base64url Input

Decoded Text

URL Encoder

Mode

Plain Text Input

Encoded Output

URL DecoderDecodes both %XX and + (space) encoding

Encoded Input

Decoded Output

URL Query BuilderBuild a query string from key-value pairs

Base URL (optional)

Query String Output

URL Query ParserPaste a full URL or just the query string

Query String or URL

Paste a query string above

URL ParserBreaks a URL into all its components

URL Input

Paste a URL above to parse it

URL ExtractorFinds all http/https URLs in a block of text

Text Input

Paste text above to extract URLs

URL CleanerStrips utm_*, fbclid, gclid and other tracking parameters

Also remove (comma-separated)

Dirty URL

Clean URL

URL SplitterVisual colour-coded breakdown of every URL segment

URL Input

Paste a URL to split

ASCII Converter

Mode

Input

Output

Unicode Converter

Mode

Input

Output

UTF-8 ConverterText → UTF-8 byte sequence in hex

Separator

Text Input

UTF-8 Bytes (Hex)

UTF-16 ConverterText → UTF-16 code units in hex

Separator

Text Input

UTF-16 Code Units (Hex)

Binary EncoderConverts text to 8-bit binary groups via UTF-8

Separator

Text Input

Binary Output

Binary DecoderConverts space-separated 8-bit groups back to text

Binary Input

Decoded Text

Octal ConverterConverts between text and octal escape sequences

Mode

Input

Output

Decimal ConverterConverts between characters and their decimal code points

Mode

Input

Output

Hex ConverterConverts between text and hex byte values

Mode

Input

Output

Character Code TableSee all encodings for every character at once

Text Input (up to 64 chars)

Type or paste characters above

MD5128-bit digest — fast checksum, not for security

Input Text

MD5 Hash

CRC3232-bit cyclic redundancy check — hex, decimal & binary output

Input Text

CRC32 Output

SHA-1160-bit digest via Web Crypto API — deprecated for security use

Input Text

SHA-1 Hash

SHA-256256-bit digest — most common SHA-2 variant, excellent for file integrity

Input Text

SHA-256 Hash

SHA-384384-bit digest — truncated SHA-512 with stronger security margin

Input Text

SHA-384 Hash

SHA-512512-bit digest — highest SHA-2 strength, recommended for modern use

Input Text

SHA-512 Hash

HMACKeyed-hash message authentication code via Web Crypto

Secret key: Algorithm:

Message Text

HMAC Output

Related Tools

Developer Generator Toolkit

100+ developer generators in one place — UUIDs, passwords,

Frontend Studio

Professional browser-based frontend IDE — HTML, CSS, JavaS

GitHub Toolkit

36 browser-based GitHub utilities — download repos, files,

Internet Speed Test

Professional Internet Diagnostics Suite — download/upload

Browse All Tools