// OVERLAID FOR DEVELOPERS

Point at the line, not just the file.

Code reviews, pairing sessions and tech interviews all run into the same wall: nobody can see what you're pointing at or what you just pressed. Overlaid fixes both without leaving your editor.

BUY OVERLAID · $4.99 or try it free for 7 days

Replay

checkout.ts

EXPLORER

src/

cart.ts

checkout.ts

discounts.ts

tests/

checkout.test.ts

checkout.ts

1export function applyDiscount(cart: Cart, code: string) {

2 const rate = DISCOUNTS[code] ?? 0;

3 if (!rate) return cart.total;

5 const discounted = cart.total * rate;

6 return Math.round(discounted * 100) / 100;

9// TODO: stack codes? see #412

10export const DISCOUNTS: Record<string, number> = {

11 EARLY50: 0.5,

12 FRIENDS: 0.2,

13};

main · Ln 5, Col 22 · TypeScript

// SOUND FAMILIAR?

THINGS YOU'LL STOP SAYING.

“Scroll up a bit. No, the other up.”
“Wait, which line are we on?”
“What did you just press?”

// HOW IT PLAYS OUT

THREE MOMENTS WHERE IT PAYS OFF.

01SCENARIO

Pairing, with your shortcuts on screen

You fly through the editor on muscle memory and your pair sees the screen jump around with no idea why. Turn on the keystroke overlay and every combo shows up as a keycap at the bottom of the screen. It only shows key combos by default, so plain lowercase typing stays off screen.

HOW

⌃⌥KTurn the keystroke overlay on or off from anywhere.
Work as normal. Combos like ⌘D and ⌥⇧F appear as raised keycaps and fade after a moment.
Password fields and other secure input are never shown, even with all keys turned on.

Replay

checkout.ts

EXPLORER

src/

cart.ts

checkout.ts

discounts.ts

tests/

checkout.test.ts

checkout.ts

1export function applyDiscount(cart: Cart, code: string) {

2 const rate = DISCOUNTS[code] ?? 0;

3 if (!rate) return cart.total;

5 const discounted = cart.total * rate;

6 return Math.round(discounted * 100) / 100;

9// TODO: stack codes? see #412

10export const DISCOUNTS: Record<string, number> = {

11 EARLY50: 0.5,

12 FRIENDS: 0.2,

13};

main · Ln 5, Col 22 · TypeScript

DSelect next match

02SCENARIO

Zoom into the tiny thing

The bug is in a 9pt log line or an issue number buried in a comment. Freeze the screen and zoom in up to 8x, then draw on the frozen frame so everyone is looking at the same character. Press Esc and you're back to the live screen.

HOW

With draw mode on, hold ⌘ and scroll, or pinch on a trackpad, to freeze and zoom.
Scroll to pan around the frozen frame. Every drawing tool still works.
escGo back to live.

Replay

checkout.ts

EXPLORER

src/

cart.ts

checkout.ts

discounts.ts

tests/

checkout.test.ts

checkout.ts

1export function applyDiscount(cart: Cart, code: string) {

2 const rate = DISCOUNTS[code] ?? 0;

3 if (!rate) return cart.total;

5 const discounted = cart.total * rate;

6 return Math.round(discounted * 100) / 100;

9// TODO: stack codes? see #412

10export const DISCOUNTS: Record<string, number> = {

11 EARLY50: 0.5,

12 FRIENDS: 0.2,

13};

main · Ln 5, Col 22 · TypeScript

2.6× · frozen

03SCENARIO

Walk through a code path

Explaining how a value flows through three functions is where screen shares fall apart. Set ink to fade after two seconds and just keep drawing. Each underline and arrow clears itself, so the code never ends up buried under your own scribbles.

HOW

Set Fade to 2s in the toolbar.
ADraw arrows between definitions and call sites as you talk.
Nothing to clean up. Old marks fade on their own.

Replay

checkout.ts

EXPLORER

src/

cart.ts

checkout.ts

discounts.ts

tests/

checkout.test.ts

checkout.ts

1export function applyDiscount(cart: Cart, code: string) {

2 const rate = DISCOUNTS[code] ?? 0;

3 if (!rate) return cart.total;

5 const discounted = cart.total * rate;

6 return Math.round(discounted * 100) / 100;

9// TODO: stack codes? see #412

10export const DISCOUNTS: Record<string, number> = {

11 EARLY50: 0.5,

12 FRIENDS: 0.2,

13};

main · Ln 5, Col 22 · TypeScript

// RECOMMENDED SETUP

WHAT WE'D SET.

overlaid · settings

Fade5s: Long enough to discuss a line, short enough that the diff stays readable.
KeystrokesOn, combos only: Shows ⌘P and ⌘D, not the lowercase code you type.
Cursor effectHighlight clicks: People can see where you clicked even when the call lags.
ToolbarHidden: You'll use the single-key tools (E, A, T) anyway.

// WORKS OVER

THE APPS YOU ALREADY USE.

VS Code
Xcode
JetBrains IDEs
Terminal
GitHub in your browser
Zoom
Google Meet
Microsoft Teams
Slack huddles
Webex
Discord

Overlaid draws on your screen, not inside an app, so anything you can see, you can draw on.

ONE THING TO KNOW

Share your entire screen, not a single window.

Your drawings live in their own transparent layer on top of everything. A single-window share only sends that one window, so viewers won't see your marks. Share the whole screen and they will.

// FAQ

QUESTIONS WE GET.

Not by default. It shows key combos only (keys pressed with ⌘, ⌥, ⌃ or ⇧), so plain lowercase typing stays off screen. Capitals and symbols typed with Shift do show, so if that matters, toggle keystrokes off with ⌃⌥K while you type. Secure input like password fields is never shown.

Yes. Overlaid draws over whatever is on your screen, so it works over a browser-based editor as well as a native one. Share your whole screen rather than a single window, because a single-window share doesn't include the overlay.

Only while draw mode is on, where single letters pick tools. Turn draw mode off with ⌃⌥D and your editor gets every key back. Every Overlaid shortcut can be rebound in Settings.

// COMPARE

// GUIDES

// ALSO FOR

// YOUR NEXT CALL

Try it on your next call.

7 days free with every feature. Then a one-time purchase. No account, no subscription.

BUY OVERLAID · $4.99 or try it free for 7 days