Immersion reading for your own documents
Immersion reading means listening and reading at the same time. Amazon's version pairs a Kindle book with the Audible version of the same book (checked 2026-10-26). Read-Along does the listen-and-follow part for the files you bring: a PDF, a Word file or a web link. Everyone gets one free document a day, no card needed. Premium has no daily limit and puts your documents first.
Hear a sample
Under a minute, read to you.
Press play and follow the highlighted words — this is exactly what your documents become.
The Tortoise and the Hare, by Aesop.
A Hare one day ridiculed the short feet and slow pace of the Tortoise, who replied, laughing: "Though you be swift as the wind, I will beat you in a race." The Hare, believing her assertion to be simply impossible, assented to the proposal; and they agreed that the Fox should choose the course and fix the goal.
On the day appointed for the race the two started together. The Tortoise never for a moment stopped, but went on with a slow but steady pace straight to the end of the course. The Hare, lying down by the wayside, fell fast asleep.
At last waking up, and moving as fast as he could, he saw the Tortoise had reached the goal, and was comfortably dozing after her fatigue.
Slow but steady wins the race.
From Aesop's Fables (public domain). Read by Heart, one of our AI voices.
What Amazon's Immersion Reading is, and its limit
Amazon's help page describes it as reading a Kindle book while listening to the Audible version of the book, using Whispersync for Voice. So it needs a book that has both a Kindle edition and an Audible edition. It does not mention your own PDFs or documents.
Amazon help: Accessible reading options for Kindle apps (checked 2026-10-26)
How Read-Along does it for your own files
Upload a PDF, Word, ePub, RTF, ODT, Markdown, text or HTML file (up to 3 GB), or paste a web link. A short document is ready in a few minutes; a long one takes about half as long as it takes to listen. It reads aloud with a computer voice, and each word lights up as it is spoken, so you can look down and find your place. You can pause, jump back 10 seconds and change the speed.
What it costs
Everyone gets one free document a day, no card needed. Premium has no daily limit and puts your documents first. Premium is $14.50 a month, or $69 a year. It renews until you cancel.
Honest limits
Read-Along reads English. It is a website, not a store of books or audiobooks, and the voice is a computer voice, not a human narrator. Narration stops at about 3 hours.
Questions
What is immersion reading?
Listening to a text while following the words on the page. Amazon uses the name for pairing a Kindle book with its Audible version.
Does Amazon's Immersion Reading work with my own PDF?
Amazon's help page describes it for a Kindle book and its Audible version. It does not mention your own files.
Is Read-Along free?
One document a day is free with no card. Premium has no daily limit.