Encode & Crypto

tools · 16 tools

Encode/Decode

Base64 Encode/Decode 工具图标 Base64 Encode/Decode

Convert text and Base64 both ways with correct UTF-8 Chinese; images preview as Base64.

URL Encode/Decode 工具图标 URL Encode/Decode

Encode/decode URLs and parameter strings, for the whole URL or a single value.

Hex & Binary Converter 工具图标 Hex & Binary Converter

Convert freely among binary, octal, decimal and hexadecimal, with big integers and bit view.

Unicode Converter 工具图标 Unicode Converter

Convert Chinese and Unicode escape sequences both ways, supporting \uXXXX and \u{XXXXX}.

Morse Code Converter 工具图标 Morse Code Converter

Convert between text and Morse code, with letters, digits and common punctuation.

HTML Entity Encode/Decode 工具图标 HTML Entity Encode/Decode

Encode and decode HTML entities for special characters, safe to display code and symbols on a page.

Hash & Crypto

Hash Calculator 工具图标 Hash Calculator

Compute MD5, SHA-1, SHA-256, SHA-512 of text or files, all locally with no upload.

AES Encrypt/Decrypt 工具图标 AES Encrypt/Decrypt

Encrypt/decrypt text with AES-GCM; the key is derived locally from your password, nothing leaves the browser.

Hash Verify 工具图标 Hash Verify

Compute MD5/SHA-1/SHA-256/SHA-512 of text and compare with an expected hash to verify integrity; local.

More

JWT Decoder 工具图标 JWT Decoder

Decode JWT header and payload; show issued time, expiry and remaining validity.

Random Password Generator 工具图标 Random Password Generator

Batch-generate strong passwords with custom length and charset, plus strength estimate; local only.

Password Strength Meter 工具图标 Password Strength Meter

Estimate password entropy and crack time, show the character pool and tips; local only.

Passphrase Generator 工具图标 Passphrase Generator

Build memorable, high-entropy passphrases from a built-in wordlist, with optional digits and symbols; local.

Username Generator 工具图标 Username Generator

Generate random usernames from adjective+noun, with optional digits and separators; local.

Password Breach Check 工具图标 Password Breach Check

Check a password against a built-in weak list and local rules (keyboard walk/sequence/repeat); no upload.

Password Audit 工具图标 Password Audit

Audit a password in one go: strength (entropy) plus breach risks (weak list, keyboard walk, sequence, repeat); a full report.