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John's Web Page

ASCII Table

bLog

DMARC Validation Tool
DMARC Record Generator
DMARC Record Generator #2

DNS Checker
Public (free) DNS List

(Privately Hosted) e-Mail
(Externally Hosted) e-Mail
e-Mail (SMTP) Server Test

Emoji

Favicon Generator
Free Favicon Generator

Font Size Clamp() Generator

.htaccess Redirect Generator

HTTP Header Check

Icons

ICMP Types and Codes

(ASN) IP Lookup
IP Blacklist Check
IP Geo-location
IP to Hostname Lookup
IP Location Lookup
IP Lookup
(Your) Public IP

Internet Network tools

MAC Address Lookup
MAC Address Lookup #2

(IP) Port Assignment Database
(Specific) Port(s) Scan
(List of) TCP and UDP Ports

(Family-oriented) Search
(Meta) Search
(Responsive Web Design) META Tag

META Tag Generator
(OpenGraph) META Tag Checker
META Tags
(OpenGraph) META Tag Preview

(Reverse) Image Search

Security Scan

Speed Test

SMTP Test

SPF Record Generator
SPF Record Checker
SPF Record Lookup

(Web Based) Traceroute

Translator

Looking-Glass Server Lookup

Virtual Server Lookup

Web DAV

Web Server Operating System Lookup


Notes:


In accordance with California Assembly Bill No. AB-1043 regarding Age verification signals: software applications and online services, since JohnsWebPage has no facilities to dynamically ascertain the age range of Web visitors, it is legally necessary to discontinue JohnsWebPage for California citizens by, at latest, January 1, 2027.

These are just a collection of free network tools I find useful.

Finding useful network utilities on search engines, and vetting, them is something of a task for me. This is just faster, for me, than finding the links again, even in a horde of mobile bookmarks.

With any noted exceptions, these links, at time of posting, seem to be free of any 3rd-party intervention or security risks to the Web visitor.

These are just Internet-based utilities that I use that I don't want to have to search for on the search engines. There will not be any affiliate links put here but there will be facilities to suggest better links.