OnePanel

OnePanel is a web-based manga reader that solves a simple but annoying problem: when you open a full manga page, your eyes naturally jump to the ending panels before you've read the beginning. OnePanel hides everything except the current panel, so each reveal lands in the order the artist intended. You paste a chapter URL from supported sources like OP Chapters or TCB One Piece Chapters, and the tool automatically cuts the page into individual panels. No account is needed for link-based reading — just paste and go.

The free version works well for most chapters, which follow a standard grid layout. Panels are detected on the spot using basic image analysis, and you navigate with arrow keys on desktop or taps on your phone. For chapters with complex layouts — splash spreads, diagonal cuts, panels inside panels — the Pro subscription (€4.99/month) uses a GPT-5.6 model to accurately parse those tricky pages. Pro also lets you upload your own CBZ, CBR, ZIP, RAR, or PDF files. Uploaded files are deleted after analysis; only the panel layout is kept so you can resume where you left off.

OnePanel is built for anyone who reads manga or comics online and wants to avoid spoilers. It's especially useful for weekly readers of series like One Piece, where fans wait days for a new chapter and don't want the punchline ruined by a page layout. The tool works on phone, tablet, and desktop, and supports two major chapter sources today (with a request form for adding more). If you've ever accidentally glimpsed the last panel of a page before reading the rest, OnePanel is a straightforward fix.