Manga Scan Resolution & DPI Calculator
Calculate exact pixel dimensions, scanning DPI, and file size estimates across JIS B6, A5, and B5 manga trim sizes for high-density tablet screens and digital archiving.
Scan & Display Parameters
Select a physical paper trim preset and desired target resolution.
The Mathematics of Manga Scanning & DPI
Scanning manga is fundamentally distinct from digitizing photographs or printed prose. Manga utilizes mechanical screentone sheets (halftone dots) to simulate shading and gradient values. If a scanner digitizes at an inadequate frequency (such as 150 or 200 DPI), the scanner optical grid clashes with the print halftone dot grid, producing ugly optical interference ripples known as Moiré patterns.
Pixel Width = Round((Width in mm ÷ 25.4) × DPI)
Pixel Height = Round((Height in mm ÷ 25.4) × DPI)
Megapixels = (Pixel Width × Pixel Height) ÷ 1,000,000
Raw Bytes = (Pixel Width × Pixel Height × Bits Per Pixel) ÷ 8
Standard Japanese Print Trim Specifications
| Trim Standard | Dimensions (mm) | Dimensions (in) | Optimal 600 DPI Pixels |
|---|---|---|---|
| JIS B6 (Standard Tankobon) | 128 × 182 mm | 5.04 × 7.17 in | 3,024 × 4,299 px |
| ISO A5 (Kanzenban / Deluxe) | 148 × 210 mm | 5.83 × 8.27 in | 3,496 × 4,961 px |
| JIS B5 (Magazine Compilation) | 182 × 257 mm | 7.17 × 10.12 in | 4,299 × 6,071 px |
| ISO A4 (Artbook / Dōjinshi) | 210 × 297 mm | 8.27 × 11.69 in | 4,961 × 7,016 px |
Frequently Asked Questions
Traditional manga printing screentones utilize 60–85 lines per inch (LPI). Under the Nyquist-Shannon sampling theorem, an optical digitization sensor must sample at least twice the highest frequency of the printed halftone to prevent aliasing. Scanning at 600 DPI comfortably exceeds this threshold, keeping dots crisp and preventing muddy gray artifacts.
For distribution and reading on mobile devices, modern WebP (Quality 82–88%) or AVIF provides 30–45% smaller file sizes than legacy JPEG with virtually imperceptible degradation of fine ink strokes. For master archives, uncompressed PNG or lossless WebP ensures zero generational quality loss.