Reviewers describe LightPDF as a practical, easy-to-use PDF tool that handles common jobs well, especially conversion, editing, merging, compression, and OCR. The most repeated praise is for its clean interface, fast processing, and strong output quality, with several users saying formatting, hyperlinks, tables, and formulas are preserved. Its AI features, especially chatting with PDFs and extracting key information, also stand out for helping with long or complex documents. Feedback is overwhelmingly positive, with no meaningful criticisms mentioned in the provided reviews.