Drop a CBZ/ZIP/EPUB archive, or pick page images
41 device profiles
Every Kindle, Kobo and reMarkable generation at its native resolution — no blurry device-side rescaling.
Secure & Private
Your files are processed securely and deleted immediately after conversion
E-ink tuned
Gamma correction, autocontrast and 16-gray dithering following the KCC pipeline, tuned for e-ink screens.
FAQ
Which formats can I convert?
CBZ, ZIP, comic EPUB, or folders of JPG/PNG/WebP/GIF/BMP images in. EPUB, KEPUB (Kobo) or CBZ out. PDF input is coming soon.
EPUB or MOBI for Kindle?
EPUB. Amazon's Send to Kindle accepts EPUB since 2022 and no longer takes MOBI uploads. Current Kindles open converted EPUB in fullscreen fixed layout.
Do my files get uploaded?
No. All image processing runs in your browser — pages are resized, dithered and packed on your device and never leave it.
Why convert at all?
A raw scan squeezed onto a 6-inch e-ink screen gets tiny lettering and muddy grays. Device-specific sizing, gamma and dithering rebuild each page for your exact screen.