Sales Tax Calculator (saruwakakun.com)
A consumption tax calculator that computes the tax-inclusive price and tax amount from a pre-tax price. Supports the standard 10% rate and the reduced 8% rate for food and periodicals.
Countdown Timer (saruwakakun.com)
A web-based countdown timer that lets you set a duration or target date. Supports title and color customization, and URL sharing. No sign-up required.
Character Counter (saruwakakun.com)
A simple character counter tool. Useful for checking character counts when there's a limit, or when you want to know the length of text you've written. Supports emoji and variant characters.
Bulk PNG/JPEG to WebP Converter (saruwakakun.com)
A browser-based bulk converter for PNG, JPEG, and GIF images to WebP format. Processed entirely locally with no server uploads. Converted images can be downloaded as a ZIP archive.
Bulk PNG to JPEG Converter (saruwakakun.com)
A browser-based bulk PNG-to-JPEG converter. Offers four quality levels, supports multiple files, and downloads results as a ZIP archive. Processed locally with no server uploads.
Honorific Converter (toolpods.io)
AI tool that converts casual Japanese text into polite honorific (keigo) expressions for business use.
AI Social Filter (toolpods.io)
AI-powered tool to check text for inappropriate expressions or socially problematic content before posting on social media.
AI Tweet Generator (toolpods.io)
Enter a keyword or theme and AI generates tweet content for you.
Aspect Ratio Calculator (toolpods.io)
Calculate aspect ratios from width and height. Convert dimensions to any target size while maintaining the ratio.
Business Day Calendar (toolpods.io)
Business day calendar considering Japanese public holidays. Check working days by month or week, and calculate the number of business days from a given date.
Character Count (toolpods.io)
Count characters, words, and lines in text. Instantly check the volume of pasted text.
Website Color Blindness Simulator (toolpods.io)
Simulate how images or web content appear to users with various types of color blindness including protanopia, deuteranopia, and tritanopia.
