I've developed a pure client-side HEIC to PDF conversion tool to solve compatibility issues for iPhone/iOS users. Tech stack: Next.js 15.2.5 React 19 + TypeScript heic2any for format conversion jspdf for PDF generation Internationalization support (next-intl) All processing happens in the browser with no server uploads required, protecting user privacy. Features include batch conversion, real-time preview, custom PDF settings, and options to convert to PNG/JPG formats. This is an open project, and feedback/contributions are welcome. If you've encountered HEIC compatibility issues, give it a try.