The MacBook Air is the laptop you bought because you wanted something that just works without a fan spinning at full chat. Installing a 1.2 GB PDF editor with a background sync service feels like the wrong move for that machine.
A browser tool is the right move.
Light hardware, light software
M-series MacBook Airs have plenty of power for PDF work — but the design philosophy is 'do more with less'. A browser-based PDF editor matches that. Flint loads in two seconds, uses no background resources when closed, and edits the same PDFs Acrobat would for free.
The flow
Safari (or Chrome) → drag PDF in → edit text inline → download. Same as desktop Mac. The Air's trackpad handles signatures well — most people forget you can sign on a trackpad. Force Touch makes the line vary in thickness.
Battery-friendly
Heavy native apps drain MacBook Air batteries faster than browsers (Acrobat in particular). For occasional PDF jobs, doing them in Safari saves an hour of unplugged time vs. running a desktop PDF suite in the background.
FAQ
Will Flint slow down my Air?
Almost never. Browser-based tools use the GPU and CPU only while actively editing. When you close the tab, resources free immediately. Compare to Acrobat's background helpers, which run constantly.
Does Flint work offline?
Flint requires an internet connection. If you frequently work without Wi-Fi, install Preview's alternatives or a native app. For most MacBook Air users with regular connectivity, browser is fine.
Can I use Flint with Sidecar on iPad?
Sidecar mirrors the Mac display to iPad and lets you use Pencil on the Mac screen. Flint runs in Safari like normal — Pencil input on the iPad portion works for signatures, with a slight latency vs. native iPad use.
Keep your Air light. Edit your PDF in Safari, no install needed.