One Panel

OnePanel Reader is a manga reader that shows a chapter one panel at a time instead of a full page. The premise is that a page lays out several panels at once, so the eye reaches the reveal before the reader has finished the setup. OnePanel detects the panels on each page, orders them left to right and top to bottom, and puts one on screen at a time, with nothing past the current panel visible. Readers move forward and back with the arrow keys on desktop or by tapping on a phone or tablet. A chapter can be loaded by pasting a link from supported sources, currently OP Chapters and TCB One Piece Chapters, with no account needed. Users can also upload their own CBZ, CBR, ZIP, RAR or PDF files or page images, which requires an account. Uploaded files are deleted after analysis and only the panel layout is kept so a reader can keep their place. The site has a form for requesting additional sources. Standard panel detection is free, covers unlimited chapters on a normal grid layout, and works on phone, tablet and desktop. Pro costs 4.99 euros per month, cancel any time, and adds a GPT 5.6 layout model for complex pages such as splash spreads, diagonal cuts and panels nested inside other panels, along with uploads of personal files.