Japanese Driver's License Exam Practice Tool (www.mach-tools.net)
Browser-based practice tool for the Japanese driver's license written exam. Covers trick questions, road signs, and hazard prediction, with automatic recording of weak areas. No registration required.
Dummy Personal Data Generator (www.mach-tools.net)
Tool for generating dummy personal data including names, addresses, phone numbers, and email addresses. Supports gender, age, and quantity settings (up to 1,000 records), with presets for e-commerce and multilingual testing. CSV export supported.
Golden Ratio & Silver Ratio Calculator (www.mach-tools.net)
A calculation tool for golden ratio, silver ratio, and second silver ratio useful in web design and DTP. Supports px/rem/%/mm conversion, Tailwind CSS generation, and font size design. Easily calculate optimal dimensions and typography scales from ratios.
Group Divider Tool (www.mach-tools.net)
Tool that randomly divides members into groups by pasting a list and specifying the number of groups. Supports manual adjustment via drag-and-drop, leader selection, group locking, and text/CSV export.
Mosquito Tone & Hearing Age Check (Ear Age Test) (www.mach-tools.net)
Browser-based tool that plays sounds from 20Hz to 20,000Hz to check hearing range and estimate ear age. Supports auto-measurement mode and separate left/right ear tests. Works on smartphones and PCs; headphones recommended for accuracy.
Free Icon Image Generator (www.mach-tools.net)
Tool for searching over 10,000 icons from major libraries including Material Symbols and Bootstrap Icons, and exporting in PNG, WebP, SVG, ICO, and Base64 formats. Supports color, size, and shadow customization.
Blazing Fast Image Compressor (www.mach-tools.net)
A browser-based bulk image compression and resizing tool. Supports JPG, PNG, WebP, and AVIF, with options for WebP conversion, maximum width resizing, and bulk ZIP download. No registration required, completely free.
Online Invoice & Document Generator (www.mach-tools.net)
A browser-based tool for creating and exporting invoices, estimates, receipts, purchase orders, and delivery notes as PDF. Supports Japan's invoice system (インボイス制度). All data is processed locally and never sent to a server. Free, no registration required.
Suggest Keyword Extraction Tool (www.mach-tools.net)
An SEO tool that bulk-retrieves suggest keywords from Google, YouTube, Amazon, and Bing. Supports automatic search intent classification (Know/Buy/Do/Go), extraction patterns such as 5W1H and alphabetical variations, and CSV export.
Japan Airport Full Conquest Log (www.mach-tools.net)
Interactive map tool for recording visited airports across Japan. Records visits with a click and shows conquest rates in real time. Supports CSV data save/restore and SNS sharing. No registration required.
Roadside Station Stamp Rally Log (www.mach-tools.net)
Interactive map tool for recording visits to 1,231 roadside stations (Michi-no-Eki) across Japan. Calculates conquest rates by prefecture and region with automatic browser saving. Supports map image download and CSV import/export.
Japan Prefecture Conquest Travel Map (www.mach-tools.net)
Interactive map for recording visited Japanese prefectures by clicking. Visualizes conquest rate and visit count for all 47 prefectures with auto-saving. Supports image download, SNS sharing, and CSV import/export.
