Plan image enlargement, output dimensions and quality checks for web, print and product listings. Website: https://upscayl.app/ Downloadable planning skill; image processing and API credits are not included.
Built from publishing real books on Amazon KDP — not theory. Covers the full workflow: manuscript formatting, cover dimension math (spine width, bleed, CMYK), product page optimization (HTML description, 7 keywords, BISAC categories), royalty & pricing strategy, printing cost formulas, and pre-publication checklist. Every detail that trips up first-time publishers.
Create original coloring books with consistent characters, print-ready single-sided interiors, cover briefs, and Amazon KDP metadata.
Turn a Word, Markdown or text manuscript into a Kindle-ready EPUB3 on your own computer. Chapters, linked contents, front and back matter and curly quotes are built for you; a pre-upload check finds what makes KDP conversion fail; and you get an eBook cover, the paperback cover size from KDP's spine formula with a 300 DPI wrap PDF, and a KDP listing sheet. No API key.
Drop in a folder of product photos. The local rembg AI model removes the background and saves transparent PNGs, then Pillow crops to the subject, centers it on a 1000x1000 canvas with a set margin, adds a soft ground shadow and composites it over white, ivory, mint, peach or other presets. A summary CSV with subject bbox and file size helps you catch bad crops. Runs fully locally, no API key.
Build print-ready Amazon KDP paperback interiors for journals, notebooks, planners and log books on your own computer: lined, dot, grid, prompt, year, monthly, weekly-spread, habit-tracker and log pages from a short book.json. KDP trim, page limits, bleed, the gutter for your final page count and 0.75 pt lines are applied, then a PDF pre-flight check runs. You also get the spine width, full cover size and a KDP checklist. No API key.
批次調整圖片尺寸、裁切或留白，轉成 JPEG、PNG 或 WebP，以 ZIP 打包下載。附離線瀏覽器介面，不需 API；最多 25 張、合計 50 MB，可設定品質、背景及連續檔名。適合整理商品圖與網站素材，一次買斷。