catu talk

Capture, record, share.
Notes from making catu.

Short pieces on getting things off your screen and in front of people, and on the choices behind the app.

A laptop on a desk with a screenshot in a window on its screen: one arrow, a numbered circle and a blurred bar drawn as lines. From the screen a dashed line arcs to a marked-up sheet floating above. A mug and a notebook beside the laptop; behind, a window with blinds drawn faintly.

How to annotate a screenshot on a Mac: arrows, steps and blur

Three marks do most of the work: an arrow, a step number and a blur. Here is how to use them so a screenshot lands the first time.

2 Nov 2026 · 4 min read

A laptop on a desk with a list of copied items on its screen and a cursor on one row; from the screen one dashed line arcs to a small fan of three cards floating above. A stack of books and a pair of headphones stand on the desk, and a shelf is drawn faintly on the wall behind.

Clipboard

Mac clipboard history: your Mac forgets everything but your last copy

macOS remembers one copy. Here is what that costs you in a normal week, and how a searchable history in the menu bar fixes it without keeping your passwords.

2 Nov 2026 · 4 min read

A laptop on a desk with a very tall strip of paper unrolling from its screen down over the desk edge, a pencil and a coffee cup beside it. A small hand-drawn arrow points down along the strip. Behind, a window with blinds and a shelf of books drawn faintly.

Screenshots

Scrolling screenshot on a Mac: capture the whole page, not a corner of it

A screen shows a slice of a long page. Here is how to turn the whole scroll into one tall image, and how to avoid the mistakes that break it.

23 Oct 2026 · 4 min read

A laptop on a desk with a mug and a notebook beside it; the screen shows a window with a play badge, and from it one line arcs to a speech bubble floating above and to the right. Behind, a window with blinds drawn faintly on the wall.

Recording

Bug report screen recording: 30 seconds beats a paragraph

A paragraph describes a bug. A recording shows it. Here is how to make a bug report screen recording in under a minute, and send it as a link.

23 Oct 2026 · 4 min read

A desk seen from slightly above: an open laptop whose menu bar is crowded with six small square app icons, each icon trailing a thin curling strip of receipt paper down over the keyboard and onto the desk; beside the laptop one single square tile stands alone, softly lit, casting a faint shadow; a coffee cup, a pen and a closed notebook on the desk. Behind, drawn fainter, a wall with a window and

Product

Why we built catu: one capture tool instead of six apps

We got tired of a menu bar full of capture apps and a card statement full of their subscriptions. catu is what we built instead: one icon, one price, and most of it free.

15 Oct 2026 · 4 min read

Recording

How to record your screen on a Mac with your voice and camera

Press ⇧⌘3, pick the area, switch on the microphone and camera, and press Start. Here is the whole flow, including pausing, the Mac's own sound and what to do when you stop.

15 Oct 2026 · 3 min read

A printed photograph pinned to a corkboard with a pin, the photo showing a shop front with a sign and an awning; a dotted selection rectangle traced over the sign; from the rectangle a stream of small floating paper slips, each with a few short lines, flows down into an open notebook lying on a desk below, a pencil and a pencil cup beside it. Behind, drawn fainter, the rest of the corkboard with o