eBook Conversion Engineering Articles & Guides
Every guide below documents the exact internals of the in-browser conversion engine: Kindle Send-to-Kindle delivery rules, CBZ/CBR manga dithering for e-ink, EPUB 3.0 package structure, and the privacy model of running conversion entirely inside your browser.
Why Send-to-Kindle Bounces MOBI Files (and How to Fix it in 2026)
Amazon officially deprecated legacy MOBI on Whispernet. Discover why the Send-to-Kindle feature bounces older .mobi files and the easy 30-second solution to convert MOBI to validated EPUB 3.
Read the guide →Mastering Manga on Kindle: Margin Trimming, RTL Spine & Floyd-Steinberg Dithering
Auto-trimming white gutters, Right-to-Left spine ordering and 16-level E-Ink dithering serve to prevent the occurrence of tiny comic text and washed-out grays.
Read the guide →2026 eBook Cover Dimensions & Pixel Density Reference – Complete
Specific Pixel sizes, aspect ratios (1.6:1 v 2:3), and file size limits with Amazon KDP, Kobo, Apple Books and Google Play.
Read the guide →Stylus Margin Ergonomics: Formatting EPUBs for Note-Taking Tablets
Asymmetric 14% writing margin gutters on reMarkable 2, Kindle Scribe, and Onyx Boox note-taking tablets make stylus palm clipping a thing of the past.
Read the guide →Client-Side WebAssembly Converters Are More Secure Than Cloud SaaS
Testing memory sandboxes, zero retention ephemeral buffers and why sensitive manuscript files should not be uploaded to remote SaaS servers.
Read the guide →What eReaders Need in 2026: AZW3, MOBI, and EPUB - The Development of eBook Formats
In 2026 compare PalmDOC MOBI to Kindle KF8 AZW3 to modern EPUB 3.0 for typography, compression, DRM support and device compatibility.
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