Typography with intent
Atkinson Hyperlegible, OpenDyslexic, Lexend, spacing, line width, and calm contrast.
A free reading companion for the web
Stop guessing.
Read what fits.
ReadTune runs a quick check to suggest a reading setup worth trying, then carries your profile into articles, PDFs, web pages, and read-aloud.
4 min calibration
0 accounts
100% local by default
READING LAB / LIVE SPECIMEN
PROFILE ACTIVE
A small change can make room for a whole idea.
ReadTune begins with a short calibration. It tries a handful of different ways to set a page, then looks at your pace, comprehension, and comfort together.
There is no universal “best” font. The useful answer is the one that helps you stay with the sentence.
Your settings travel with you.
The profile comes from a quick check, not a guess.
01THE DIFFERENCE
Most reading tools give you toggles.
ReadTune gives you a starting point.
Fonts and spacing are personal. What feels helpful to one reader can be tiring for another. ReadTune makes that uncertainty useful: it tests one change at a time, checks whether you understood the passage, and keeps the settings that earn their place.
01
CALIBRATE
A four-minute experiment built around your reading.
Six short passages. One focused change at a time. Reading time, comprehension, and your own ease rating work together.
02
CARRY IT FORWARD
Your reading profile follows the text.
Reader View, PDFs, and live web pages share one profile. Your saved setup does not disappear when the tab changes.
fontspacingfocus
03
KEEP AGENCY
Nothing is permanent. Nothing is hidden.
Adjust anything, retake the test, or turn it off. Your profile and history stay on your device.
LOCAL
FIRST
FIRST
02READ ALONG
On-device by default
Listen without
losing your place.
ReadTune reads the current sentence while the same words stay visible in your chosen font. The voice is Piper, a natural neural voice that runs on your device — the default ships inside the extension, so it works offline with nothing to download.
Sentence + word highlightingFREE
NOW READING · ON DEVICE00:18 / 01:04
The useful answer is the one that helps you stay with the sentence.
Linden · on-device voice1.0×
03THE TOOLKIT
Focus that follows you
Paragraph focus, sentence steps, and an adaptive 1 / 3 / 5-line reading guide.
Works where text lives
Reader View for articles, selectable PDFs, and a live restyle mode for the page already open.
Private by default
No account, no server, and no analytics in the extension itself. Your reading and profile stay in browser storage.
A calmer place to start
Make the page meet
the reader.
ReadTune is free, open source, and built for the moment when a page should feel possible again.
Explore the project