Reading that works before the train doors close.
Orihon is the offline pipeline behind comics and manga apps. Package a volume once and it lands on the reader's device — full-resolution, entitlement-checked, and ready the moment they lose signal in the tunnel.
The part nobody wants to build twice
Readers expect a title to be there on the commute, on the plane, in the parts of the city where the signal drops — and they expect it in the resolution the artist drew it at. That means downloading whole volumes ahead of time, holding them safely, resuming a half-finished download, and knowing which titles a reader is actually allowed to keep.
Every reading app ends up writing that layer, and every version is fragile in its own way. Orihon is that layer, done once and kept boring, so your team can spend its time on the reading experience instead of the plumbing under it.
How it fits
Three moving parts, one delivery endpoint. Your app talks to Orihon; Orihon holds the bytes.
Package
Pack a volume's pages into a signed, content-addressed bundle. Publishing tools call one endpoint; every package is immutable and versioned.
Deliver
The reader SDK pulls the volumes a library entitles, in the background, resuming cleanly over flaky mobile connections. Range requests mean an interrupted download picks up, not restarts.
Read anywhere
Pages are verified and cached on the device. Once a volume is down, the reader opens it with no round-trip — offline, on airplane mode, underground.
Why teams use it
Built for reading apps that can't assume a connection — which is all of them, some of the time.
Works with no signal
Whole volumes are pre-cached at full resolution, so the reader opens instantly on the subway or the flight — no spinner, no dropped page.
Entitlement-aware
The SDK checks what a reader is allowed to hold before it caches a page. Bundles are signed, so a leaked file is inert off-device.
Prefetch that self-heals
Next chapters download quietly ahead of the reader. A checksum mismatch re-fetches just the bad page, not the volume.
We take on a few publishers at a time.
Tell us what you're building and how your readers get titles offline today.