DNS Current Location Checker

Email Spoofing Countermeasures / Domain Security Check | Certadomain

From DMARC, SPF, and DKIM configuration diagnostics to phishing judgment and subdomain search. You can comprehensively check domain security all at once.

The place where I am

Even without knowing the contact information, right here and now

Regular Expression Builder & Tester

Just type a pattern and check the highlight on the spot. Regular expression checking during development without needing external sites.

connect-doctor

Identify the reason why the URL cannot connect. Diagnose the first failure from the 4 layers: DNS, TCP, TLS, and HTTP.

PINC.

PINC ties location data to that location. In real time, your observations are being mapped. New value to all places.

Browser operation verification Web camera test

Let me check how I look before the web conference.

Public Navigation

AI-made sites and apps - what's still missing before launch? Free diagnosis with 5 questions.

Character Code Detection Tool 🔍

Display the character encoding of the file.

SpeedCheckAI

You can find out the cause of your "slow" internet in about 30 seconds.

Site Improvement Mini Diagnosis

Online diagnostic report for organizing website improvement priorities for small business operators

ASCII Art Logo Generator

You can easily generate ASCII art characters using symbols on a browser. We have prepared 4 types of ASCII fonts. All fonts are original creations.

Geospect

No need to download data or perform preprocessing. Preview over 4,500 geospatial open datasets instantly in your browser.

Amazon Search Ranking Check Tool | Check SEO Rankings & Ad Rankings in Bulk

Seller SEO & Ad Rank Checker is a Chrome extension for Amazon. You can bulk retrieve SEO rankings, ad rankings, and recommended badges by simply entering ASINs and keywords.

Information Leak Checker

Simply select the service you used, and you can find out which of your information has been leaked.

無料diffツール｜コード差分チェッカー CodeDiff Checker｜CodeQuest.work

CodeDiff Checkerは、2つのコードやテキストの差分を視覚的に確認できる無料のオンラインツールです。登録不要・インストール不要で、ブラウザだけで使えます。コードはサーバーに送信されないため

Captive Portal

Free Wi-Fi authentication screen-inspired Captive Portal Demo

nazopedia - 謎解きレビューサイト

ネタバレなしで、次に遊ぶ謎解きが見つかる。

Town Prompt Consultation Office

I'll find you a prompt that suits you perfectly and fits just right.

Minor Planet Names

Tool for searching and analyzing asteroid names and their origins

twESP32GPS

An open-source GPS & NTP server running on ESP32! Visualize satellite reception status and location information in real-time with a Svelte-based web dashboard.

Font Next

Google Fontを使用したフォントロゴ生成ツールです

見た目でズバリ分かる 応答速度チェッカー

Survival Confirmation Online | Finding Old Gaming Friends

Old online gaming friends, I wonder how they're doing now. A service where you can search for their names and quietly keep watch over them.

Subscription Organizer | Check Monthly and Annual Fees at a Glance

A web tool that lets you easily check your monthly and annual fixed costs by simply selecting the subscriptions you're currently using. No login or membership registration required—you can use it right in your browser. Perfect for people who want to start by simply organizing their growing subscription payments.