quacktools is a free collection of IT professional tools for DNS checking, SSL validation, password generation, WHOIS lookup, and network diagnostics. All tools work in your browser with no registration required.

Is quacktools completely free?

Yes! All tools are 100% free with no hidden fees, no registration, and no credit card required.

Do I need to create an account?

No account needed! All tools work immediately in your browser. Your settings are saved locally on your device using browser localStorage.

Is my data private and secure?

Yes! Most tools process everything client-side in your browser. Your data never leaves your device. We don't collect, store, or share any personal information.

Can I use these tools offline?

Most tools work offline! The Password Generator, Plain Notes, and Encrypted Note Sender work without internet. Network tools like DNS Checker and WHOIS Lookup require connectivity.

What tools are included?

We offer 11 professional tools: Password Generator, Encrypted Note Sender, SSL Certificate Checker, WHOIS/IP Lookup, Port Scanner, Plain Notes, Ping/Latency Checker, ISP Checker, MAC Address Lookup, Email Header Analyzer, and DNS Record Checker with SPF/DKIM/DMARC validation.

Free IT Tools: DNS Checker, Password Generator, SSL Validator, Network Utilities

Name: quacktools
Rating: 4.8 (127 reviews)
Author: quacktools

Random Password Generator

Generate cryptographically secure random passwords with customizable length (8-64 characters) and character types. Free password generator for creating strong, unique passwords.

Password Length: 16

Uppercase (A-Z) Lowercase (a-z) Numbers (0-9) Symbols (!@#$...)

Generated Password:

Secure Note Sender

Send encrypted messages securely with password protection. Messages are encrypted client-side using AES-256 encryption and can only be read by recipients with the password.

Your Message:

Encryption Password:

Expiration (hours): 0 = no expiration

Max Opens: Number of times link can be opened

Share this link with the recipient:

⚠️ Important: Share the password separately (via phone, in person, etc.). Anyone with both the link AND password can read the message.

SSL Certificate Checker

Check SSL certificate validity, expiration dates, and issuer information for any domain. Free SSL certificate validator for website security monitoring.

Domain Name:

WHOIS / IP Lookup

Lookup domain registration information, IP address details, ISP, location, and network information. Free WHOIS lookup tool for domain research.

Domain or IP Address:

Port Scanner

Check if specific ports are open or closed on any server. Test port connectivity for common services like HTTP, HTTPS, SSH, FTP, and custom ports.

Host (Domain or IP):

Port Number: Common ports: 80 (HTTP), 443 (HTTPS), 22 (SSH), 3306 (MySQL)

Plain Notes

Simple notepad with auto-save functionality. Your notes are saved locally in your browser with automatic backup every 30 seconds.

Your Notes:

Ping / Latency Checker

Measure website response time and latency. Test server connectivity and network performance with HTTP response time measurement.

Target URL or IP:

Note: Due to browser security restrictions, we cannot send true ICMP ping packets. Instead, we measure HTTP/HTTPS response time which gives you a good indication of latency.

For true ping from command line:

Windows:
ping example.com
ping -t example.com (continuous)

Linux/Mac:
ping example.com
ping -c 10 example.com (10 packets)
traceroute example.com (show route)

ISP Checker by IP

Identify ISP provider, organization, and geolocation from any IP address. Lookup your own IP or check details for any public IP address.

IP Address:

MAC Address Lookup

Find network device manufacturer and vendor information from MAC addresses. Lookup OUI (Organizationally Unique Identifier) database.

MAC Address:

MAC Address Format:

Accepted formats: 00:1A:2B:3C:4D:5E, 00-1A-2B-3C-4D-5E, 001A.2B3C.4D5E, 001A2B3C4D5E

OUI (First 6 characters): Identifies the manufacturer/vendor
Device ID (Last 6 characters): Unique device identifier

Useful Links:
• MAC Lookup Database
• Wireshark OUI Lookup
• IEEE OUI Registry

Email Header Analyzer

Parse and analyze email headers to troubleshoot delivery issues. Check SPF, DKIM, DMARC authentication and trace email routing path.

Email Headers:

How to get email headers:

Gmail: Open email → Click ⋮ (three dots) → "Show original" → Copy all text
Outlook: Open email → File → Properties → Copy "Internet headers"
Yahoo: Open email → More → "View Raw Message"
Apple Mail: View → Message → All Headers → Select and copy

What we analyze:
• Email routing path (all servers the email passed through)
• Delivery timeline and delays
• Sender information (IP, domain, SPF/DKIM/DMARC status)
• Authentication results (SPF, DKIM, DMARC)
• Spam score and filtering information
• Reply-To and Return-Path details
• Message-ID and threading information

DNS Record Checker

Check all DNS records for any domain including A, AAAA, MX, NS, TXT, SPF, DKIM, and DMARC. Free DNS lookup tool for troubleshooting email delivery and domain configuration.

Domain Name:

Free IT Professional Tools & Network Utilities