Marketing
UTM Builder
Add UTM parameters to a link and get a clean campaign URL for GA4, with checks for inconsistent values.
Open toolFree tools for online sellers
Small, practical tools for checking the numbers behind an online store. Everything runs in your browser: nothing you type, scan or upload is sent or saved.
These are the first tools available in English. The full set of tools is currently in Japanese.
Utilities
QR Code & Barcode Scanner
Scan QR codes, EAN, UPC and Code 128 barcodes from your camera or an image, right in the browser.
Open toolAds & analytics
Break-Even ROAS Calculator
Find the minimum ROAS your ads need before each sale loses money. Works in any currency.
Open tool