Free QR Code Generator, IP Finder & Advanced Network Tools & Utilities

IPv4 Network

IPv4

IPv6 Network

IPv6

System Info

Device

Browser Identity

Software

Connection Speed

Metrics

Measuring...

Server Intelligence

Headers

Ping Test

Latency

Open this tab to run latency tests

WebRTC Leak Test

Privacy

Open this tab to check WebRTC leaks

Blacklist Check

DNSBL

Check an IPv4 against 12 spam blacklists

Subnet Calculator

CIDR

Enter CIDR notation (e.g., 192.168.1.0/24)

CIDR Aggregator

Merge/Split

Merge a list into the fewest CIDR blocks, or split one block into smaller subnets

Jitter & Stability

Jitter

Measures latency spread across repeated samples — high jitter breaks calls and streaming

DNS Lookup

DNS

Enter a domain to look up A, AAAA, MX, NS, TXT, CNAME, SOA records

Email Config

SPF/DKIM

Check SPF, DKIM, DMARC & MX records

Reverse DNS

PTR

Resolve hostname from IP via PTR record

WHOIS / RDAP

Registry

Look up registration info for any domain or IP

DNS Propagation

Multi-Resolver

Compares what Cloudflare and Google resolvers return — mismatches mean a change is still spreading

DNSSEC Validation

Chain of Trust

Checks for a DS record and whether the resolver validated the signatures

Port Scanner

TCP

Scan 12 common TCP ports on any host

SSL Certificate

TLS

Check SSL cert validity, expiry and issuer for any domain

TLS Handshake

Cipher

Inspect TLS version, cipher suite and certificate chain depth

Tech Stack

Detect

Detect CMS, frameworks, CDN and security headers from any URL

Redirect Chain

Trace

Every hop with status code and timing, up to 10 redirects

Header Extractor

Raw

Every response header, grouped and copyable — nothing filtered out

Meta Check

8 Platforms

Share previews, crawler access, tags and JSON-LD for any page

G f X in T S W D

QR Code

8 Types

Type

Colour

Style

Size

More options Custom colours · caption

Code Background

Caption optional — adds a two-colour card

Error correction is always set to High (30%), so the code still scans with the logo in the centre.

Type a website URL to generate your QR code

Live preview · updates as you type

Input

Output

Regex Tester

JavaScript

Test text

Matches

Code

Case Converter

Slug

HTTP Status Codes

Reference

Line Tools

Sort · Dedupe

Unique Trim Drop empty Ignore case

Cron Explainer

Schedule

minutehourdaymonthweekday

Colour Contrast

WCAG

Text Background

Text Counter

SEO

Number Base

Hex · Bin

DEC HEX OCT BIN

Type in any field. Accepts 0x, 0o and 0b prefixes, and _ or spaces as separators. Any size — no 53-bit limit.

chmod Calculator

Linux

	Read	Write	Execute
Owner
Group
Others

setuid setgid sticky

Password Generator

Secure

Length 20

A–Z a–z 0–9 Symbols No look-alikes

Generated in your browser with the Web Crypto API. Nothing is sent or stored.

UUID Generator

v4 · v7

UPPERCASE No hyphens { braces }

Unix Timestamp

Epoch