LensUp is a browser-based document scanner and PDF and image toolkit for turning paper photos and existing files into printable, shareable formats. Users can capture or import images and PDFs, crop and straighten pages, adjust lighting and contrast, arrange multiple pages, and export PDFs or images, including A4 layouts and front-and-back ID card copies. Additional tools compress files toward a target size, resize images for print, create passport-photo crops, edit PDFs, and convert photos, Word documents, PDFs, and EPUB books into Markdown with OCR options. The tools are available without an account or watermark; core scanning, editing and basic file conversions run locally in the browser. LensUp is suited to students, job applicants, teachers, and people handling forms, receipts, and routine document paperwork.