Guides

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P

Password Strength Checker

Score any password and estimate crack time

P

Password Generator

Create strong random passwords up to 128 chars

R

Random String Generator

Random tokens, IDs and keys with any charset

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Passphrase Generator

Memorable multi-word passphrases (Diceware)

T

TOTP / 2FA Code Generator

Time-based one-time codes and otpauth secrets

P

Password Breach Checker

Check if a password appeared in known breaches

S

SHA-256 Generator

Hash text to a 64-char SHA-256 digest

M

MD5 Generator

Compute the 32-char MD5 checksum of any text

S

SHA-1 Generator

Generate the 40-char SHA-1 hash of any input

S

SHA-512 Generator

Hash text to a 128-character SHA-512 digest

H

HMAC Generator

HMAC-MD5, SHA-1, SHA-256 & SHA-512 with secret key

B

bcrypt Generator / Checker

Hash passwords with bcrypt and verify hashes

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PBKDF2 Key Derivation

Derive keys from a password with salt and iterations

A

AES Encrypt / Decrypt Text

Encrypt text with AES-256-GCM and a password

F

File Hash / Checksum

Compute SHA hashes of any file locally

here I

IP Address Checker

Identify IPv4 vs IPv6, public/private and more

I

IPv4 Calculator

Network, broadcast, hosts, subnet mask & wildcard

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IPv6 Calculator

Expand, compress and subnet IPv6 addresses

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Subnet Calculator

CIDR ranges, wildcard masks and usable hosts

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MAC Address Generator

Random valid MAC addresses, unicast or multicast

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Port Checker

Learn what each TCP/UDP port number means

D

DNS Lookup

Resolve A, AAAA, MX, NS, TXT and CNAME records

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WHOIS Lookup

Domain registration, expiry and registrar info

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HTTP Header Analyzer

Security, caching & SEO headers explained

U

User-Agent Parser

Decode browser, OS and device from any UA

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MIME Type Lookup

File extension to MIME type reference

H

HTTP Status Code Lookup

Every status code 1xx–5xx explained

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URL Encoder / Decoder

Percent-encode URLs and parse query strings

C

Color Contrast Checker (WCAG)

Check text contrast against WCAG AA & AAA

U

UUID / ULID Generator

UUID v4, v7, ULID and NanoID in bulk

J

JWT Decoder & Signer

Decode, inspect and sign JSON Web Tokens

B

Base64 Encoder / Decoder

Encode and decode Base64, standard or URL-safe

Q

QR Code Generator

QR codes for links, Wi-Fi and vCards

J

JSON Formatter & Validator

Format, minify and validate JSON instantly

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Unix Timestamp Converter

Convert Unix timestamps to dates and back

R

Regex Tester

Test regular expressions with live matches

D

Diff Checker

Compare two texts and highlight differences

L

Lorem Ipsum Generator

Placeholder paragraphs, sentences or words

N

Number Base Converter

Convert between binary, octal, decimal and hex

C

Color Converter (HEX / RGB / HSL)

Convert colors and copy HEX, RGB or HSL

C

CSV to JSON Converter

Convert CSV to JSON and JSON back to CSV

C

Case Converter & Slug Generator

camelCase, snake_case, kebab-case, Title & slug

W

Word & Character Counter

Words, characters, sentences and reading time