How to Use Line Focus Mode to Read Without Losing Your Place

Losing your place while reading is more than annoying

If you've ever had to re-read the same paragraph three times because your eyes jumped to a different line mid-sentence, you know how exhausting reading can be. For people with ADHD or visual tracking difficulties, this isn't an occasional annoyance — it's a constant one that makes reading genuinely tiring.

Line focus mode is a simple but powerful fix: it dims everything on the page except a horizontal band around your current reading position. Suddenly there's only one place your eyes can go.

Why eyes drift while reading

The eye doesn't move smoothly across text. It jumps in saccades — quick, discrete movements from fixation point to fixation point. During each jump, your peripheral vision picks up text from surrounding lines.

For most readers, this is helpful. The brain pre-processes upcoming words. But for readers whose attention is easily pulled, it means the text above or below constantly competes for focus.

When there's a lot of visual content on a page — images, ads, different font sizes — the saccades get larger and less accurate. You end up three lines down from where you were.

Line focus removes that competition entirely.

How line focus mode works technically

A content script overlays the page with a semi-transparent dark layer. Then it cuts out a horizontal window — the focus band — at your cursor's vertical position. Text inside the band is fully visible. Text outside it is dimmed to about 20-30% opacity.

When you move your cursor down to the next line, the focus band follows. Some implementations tie the band position to scroll position instead of cursor position, which works well if you're scrolling through an article at a steady pace.

Using line focus in ADHD Reading Focus

Install ADHD Reading Focus from the Chrome Web Store. Open an article. Click the extension icon and enable Line Focus.

By default, the focus band is about two lines tall and follows your mouse cursor. Move the cursor to the line you're about to read, and everything else dims.

Settings worth adjusting:

• Band height: Wider bands are gentler and give more context. Narrow bands (one line) are more aggressive but work better for people whose eyes drift a lot.
• Dimming intensity: If 80% dim feels too dark, reduce it to 50%. You want surrounding text visible enough that you can jump to a new section quickly, but dim enough that it doesn't compete for attention.
• Cursor vs. scroll tracking: If you use a keyboard to scroll, switch to scroll-linked mode so the band moves automatically as you go down the page.

When to use it versus skipping it

Line focus is most useful for:

• Long-form articles and documentation
• Academic papers or research you need to absorb carefully
• Any content where you find yourself re-reading sections constantly

It's less useful for:

• Scanning pages quickly for specific information
• Short content where losing your place doesn't matter
• Pages with lots of code blocks or tables where you need to see multiple lines simultaneously

For scanning, turn it off and just use reading mode. Line focus is for when you're reading carefully, not skimming.

Pairing it with bionic reading

The most effective reading setup for ADHD-affected readers is line focus combined with bionic reading. Line focus keeps you on the right line. Bionic reading keeps your eyes moving forward through each word instead of drifting mid-word.

They work on different planes — vertical (line focus) and horizontal (bionic reading) — which is why they complement each other so well.

Conclusion

Losing your place while reading is a solvable problem. Line focus mode creates a focused reading channel that makes tracking your position almost effortless. If you've resigned yourself to re-reading paragraphs as a normal part of online reading, try it once on a long article. The difference is immediate.