CapyToolkit: 45+ free browser tools, each with a how-to guide

CapyToolkit is a free online library offering over 45 browser-based tools, each accompanied by example-driven reference content. The website, accessible at https://capytoolkit.com, encompasses nine categories, including hardware diagnostics, developer parsers, security tools, audio testing, math calculators, text analysis, web design utilities, network references, and personal tools.

Hardware diagnostics tools help users assess their device's condition, while developer parsers and encoders assist in manipulating data formats. Security and privacy tools ensure users' information remains confidential, and audio testing tools evaluate sound quality. Math and engineering calculators support various computations, and text analysis tools analyze written content.

Web design utilities aid in creating and managing websites, and network reference tools provide essential network information. Personal tools like a passport photo cropper, image shrinker, PDF toolkit, phone-scan deskew, and receipt splitter are also available.

One notable example is the resistor calculator, which explains band tolerance, while another is the subnet calculator that breaks down CIDR notation. Users can also reference MIME and HTTP status codes, compare contrast levels according to WCAG AA and AAA thresholds, or use personal tools such as a passport photo cropper and PDF toolkit.

CapyToolkit operates entirely on the client side, meaning no files upload, and no data leaves the user's browser. Once installed, the site works offline and is also available on the Microsoft Store for Windows. The platform is free and available in English only. For further information, users can visit the website, blog, or changelog. The Microsoft Store link is also provided for easy installation.