Most Mac users treat Apple Preview as a quick viewer, but it can do real work—reordering and merging PDFs, password-locking documents, redacting sensitive information, matching dark mode for easier nighttime reading, removing image backgrounds, opening clipboa
For most people, Apple Preview is where you go to skim a PDF and get out. That’s the trap: it feels like a viewer, so you never look for the buttons that quietly turn it into something far more useful.
I use it daily for editing images. marking up documents. signing PDFs. and handling the kinds of tasks that normally make you reach for a separate app. And the surprising part isn’t that Preview can do these things—it’s that it can do them without costing you anything. and without switching workflows.
One of the most time-saving features is what happens when you stop thinking of PDFs as fixed pages. Preview lets you rearrange, combine, and extract parts of a PDF. To do it, you first have to enable the thumbnail view. Open a PDF in Preview and go to View → Thumbnails or hit ⌥⌘2 to reveal the sidebar. Then you can click and drag pages to reshuffle them in any order.
Those same pages can be pulled out of the document. You can drag a selected page out of the sidebar directly onto your desktop, and it will save those pages as a new PDF—no extra software required.
If your work involves assembling documents from multiple sources, Preview also lets you merge. You can drag a PDF document or pages from other PDFs inside another PDF to combine them.
Once you start handling sensitive files, another set of controls matters more than editing ever does. Preview can lock a PDF so only people with the correct password can open it. Open your PDF. click the info button in the toolbar. find the security lock icon under Permissions. and click the Edit button.
Then check the box to require a password to open the document, set your password, and save the changes. Preview also gives you a way to control what others can do without the password—allowing things like printing, but nothing else.
And if you need to permanently hide information, Preview’s redaction tools don’t just cover text—they obscure it for good. Once you save a redacted document, even you won’t be able to get the information back. That’s why creating a copy of the original document before redacting is essential.
To redact, open the Markup toolbar and click on the Redact tool. From there, you can highlight text or select an area to redact.
There’s also a small but genuinely practical improvement for anyone who reads late—especially in dark mode. Preview now includes an option that matches your Mac’s appearance for PDFs. When your Mac is set to dark mode, go to View → Use Dark Appearance for PDF. The bright white background flips to a dark one that’s easier on the eyes. It’s the kind of feature you don’t notice until you’ve turned it on.
Preview can even handle image edits you might assume require a dedicated tool. One feature stands out: removing image backgrounds. You don’t need Affinity or Photoshop to cut out a subject. Open an image in Preview, go to Tools → Remove Background, or use the keyboard shortcut ⌘⇧K. The result is a cleaned cutout you can use immediately.
There’s a faster way to work with images too—using what’s already on your clipboard. If you copy an image to your clipboard. you don’t need to paste it into a photo editor just to save or tweak it. Open Preview and go to File → New from Clipboard or hit ⌘N. Your copied image opens instantly in Preview, ready for editing, resizing, or export.
For day-to-day communication, the markup tools are where Preview feels like a real editor rather than a reader. The markup toolbar lets you draw circles or rectangles to highlight parts of a document, add text, draw arrows, and even drop in your signature.
Screenshots are covered as well. If you don’t handle dozens of screenshots every day, Preview’s built-in annotation tools may be enough on their own. And when you do need something extra, there’s a bonus that can save time: extracting high-quality app icons.
If you already have the app installed on your Mac. you don’t need to hunt for the icon image on the web. Open Finder, go to the Application folder, select the app, and copy it. Then launch Preview and use the “New from Clipboard” option. or use ⌘N to open the app icon as an image in Preview. Finish by pressing ⌘S to save it to your desktop.
The takeaway is simple: Apple Preview is more than a viewer. It’s already on your Mac. it’s free. and it can take on the tasks people usually outsource—PDF page management. document protection. permanent redaction. nighttime-friendly reading. background removal. clipboard image handling. and quick markup with signatures. If you give it a proper chance. it’s easy to see why it can become a permanent part of your workflow.
Apple Preview macOS app PDF editor redaction password lock dark mode PDF remove background markup toolbar screenshots clipboard images
So basically Preview is like Adobe but free? Never knew.
Wait… it can password-lock and redact stuff? I thought that was only for corporate contracts and expensive subscriptions. Also who even knows where the thumbnails are, Apple hides everything.
I don’t get it, I just open PDFs and print them lol. If you drag pages around does it change the actual order in the file for everyone? Seems kinda sketchy if it can “extract parts” without messing things up. My cousin said you need some plugin but maybe he’s wrong.
Apple really said “viewer” and then turned it into a whole toolkit… typical. I’m still stuck on the dark mode part because I read at night and my eyes hate the light. The background removal thing too?? like can it really take a random picture and clean it up automatically? I’ll believe it when I see it, but I’m gonna try ⌥⌘2 tomorrow and pretend I’m a pro.