Digital library & secure reader
Hylight is a white-label digital library and secure reader for organizations whose content is their business — built so publishing a new edition never costs a reader their work.
Explicit instruction never leaves the alphabetic principle to chance. Each new sound–spelling correspondence is modeled by the teacher and practiced until it becomes automatic for every learner in the room.
This planning note on scheduling, materials budgets, and room assignments will be revised by the editorial team before the next printing and should not be treated as final classroom guidance.
Explicit instruction never leaves the alphabetic principle to chance. Each new sound–spelling correspondence is modeled by the teacher and rehearsed until it becomes automatic for every learner in the room.
The planning note was removed in this edition.
Maria's annotations
modeled by the teacher and practiced until it becomes automatic
Decodable passages give beginning readers controlled practice.
Needs update (1) — orphaned or from an earlier version, not shown on the page
This planning note on scheduling, materials budgets, and room assignments
“This planning note on scheduling, materials budgets, and room assignments will be revised by the editorial team before the next…”
Your reader marked up Edition 1. Flip to Edition 2 — the same file you would publish next month — and watch what happens to her work.
The problem
Publishing an update should be good news. For your readers it usually isn't. Page numbers shift, a paragraph moves, one sentence gets reworded — and every highlight, note and bookmark they made is either in the wrong place or gone entirely.
So they stop marking up your books, or they stop moving to the current edition. Neither is good for the organization that wrote them.
What Hylight does
Hylight anchors every mark to the text it was made on, not to a coordinate on a page. Publish a new edition and each reader's highlights, notes, bookmarks and ink re-anchor to the words they belonged to — even when the wording changed or the paragraph moved to a different page. Anything genuinely deleted is surfaced for review with the reader's original text intact. Nothing is silently relocated, and nothing is quietly dropped.
Roles, cohorts and content assignment are first-class, not an afterthought bolted onto a viewer. Instructors manage their learners; administrators manage the catalogue. It runs on infrastructure you own, under your domain. A reader is a commodity — the structure around your program is not.
Content is served through identity-bound expiring URLs and never sits on a public path. Every page a reader opens carries their own name and email woven across it. Printing is controlled per title, and every attempt — allowed or denied — lands in a permanent audit log you can hand to a compliance officer.
Security
Every claim below is a thing the system does, not a posture it takes.
Reading Co-Pilot
Your readers study late, alone, with nobody to ask. The Co-Pilot sits inside the reader and answers from the page in front of them — your wording, your curriculum, and nothing else. Every answer names the page it came from.
“What is this passage teaching?”
Phonemic awareness, the alphabetic principle, explicit instruction in sound-spelling correspondences, and fluency — in the context of guiding coaches in literacy instruction.
Source · Page 1
“What is the capital of France?”
The book passage does not cover the capital of France.
It knows the answer. It declines anyway.
The part most AI won't tell you
Publishers get burned by assistants that wander. This one is built to stay inside the covers — and the limits are the point.
Every question is written to a permanent, per-organisation log. Cohort and editorial reporting on that log — which pages get asked about, and what readers ask when they get stuck — is the next build.
In the product
Hylight is built to be white-label: your brand, your domain, your library. Readers sign in to your organization, not to a platform they've never heard of.
Where each piece stands
We'd rather tell you what's finished than what's planned. Ask us for the current state of anything on this page.
Moving from another platform
Most organizations come to us already renting a reader from someone else, with a catalogue that took years to build and a quiet worry about who really owns the relationship with their learners. We load your titles, stand the library up under your domain, and give you the publishing controls directly — so the next edition is something you ship, not something you file a ticket for.
Send us one title and a draft of its next edition. We'll show you exactly what happens to a reader's work when you publish it.