How to Show Hidden Export Formats in Preview on macOS

You’ve got an image open in Preview, you go to export it, and macOS offers you a polite little list of formats that feels… suspiciously short. Like:
“Here’s JPEG. Here’s PNG. Here’s PDF. We good?” Meanwhile, you’re trying to make a GIF, an icon file, or something that won’t make a design team sigh loudly.

The good news: Preview can export to a lot more formats than it initially admits. The even better news: the “secret handshake” is just the Option (⌥) key.
Yes, the same key you’ve probably only used to type weird accents and accidentally trigger alternate menu items.

Why Preview “Hides” Export Formats in the First Place

Preview is built to be friendly, not encyclopedic. By default, it shows a shorter list of common export formats so most people don’t end up saving a family photo as
an obscure legacy bitmap and then wondering why it won’t open on their phone. In other words: Preview is trying to protect the world from chaos.

But if you know what you’re doing (or you’re at least willing to Google the format later), you can reveal the extended list on demandno hacks, no plug-ins,
no “download this mysterious converter” situation.

The One Trick: Option-Click the Format Menu

Step-by-step: show hidden export formats for a single file

1. Open your image (or PDF) in Preview.
2. Go to File > Export…
3. In the export dialog, find the Format pop-up menu.
4. Press and hold Option (⌥), then click the Format menu.
   (If you click first and then hold Option, you may miss the magicOption should be held while opening the menu.)
5. Pick your newly-revealed format, set any options (like quality), and export.

Apple’s own Preview user guide explicitly calls out that holding Option while clicking the Format pop-up reveals “specialized or older formats.”
That’s the official, non-wink-wink description of “hidden formats.”

What formats might appear when you hold Option?

The exact list varies by macOS version and the file you’re exporting, but Option-revealed formats often include some combination of these:

• GIF (handy for simple animations or small web graphics)
• BMP (legacy Windows-friendly bitmap format)
• ICNS (macOS icon files)
• JPEG 2000 (different compression approach from regular JPEG)
• OpenEXR (high-dynamic-range, pro graphics workflows)
• PSD / Photoshop (sometimes appears depending on context)
• TGA (common in some game/dev pipelines)
• SGI and other older or specialized formats you didn’t ask for, but now you’re curious about

Multiple long-running Mac publications document that the Export dialog shows only a smaller set by default, but expands dramatically with an Option-clicksometimes
jumping from “a handful” to well over a dozen choices.

Export vs. Save As: Same Destination, Different Road Trip

Preview gives you a few ways to save work, and the names can feel deceptively similar. Here’s the practical difference:

• File > Save updates your current file (where possible).
• File > Export… creates a new copy, often intended for changing format, compression, or compatibility.
  It’s your “make a different version of this” button.

• File > Save As… creates a new copy with a new name/location (and can also expose format options),
  but it’s usually hidden unless you press Option.

How to reveal “Save As…” in Preview

1. Open the file in Preview.
2. Click the File menu in the menu bar.
3. Hold Option (⌥).
4. You should see Save As… appear (often swapping in where “Duplicate” normally lives).

This is not a weird third-party trick; it’s a documented macOS behavior for Preview’s File menu, and it’s been covered for years because it’s so consistently useful.

Batch Converting Images in Preview (Because You Have Better Things to Do)

Converting one file is fine. Converting 37 files one-by-one is how people end up “taking a short walk” and never returning.
Preview can batch convert in a surprisingly clean way:

1. In Finder, select multiple images.
2. Right-click and choose Open With > Preview (or just drag them onto Preview’s icon).
3. In Preview’s sidebar, click one thumbnail, then press Command (⌘) + A to select all.
4. Go to File > Export Selected Images…
5. Choose a format (and if you want the extended list, hold Option (⌥) while clicking the Format menu).
6. Pick your destination folder and export.

Many guides also point out you can tweak settings like quality (for JPEG) in the export window, which is clutch when you’re trying to reduce file size without
turning everything into a crunchy mess.

Choosing the Right Format: Quick, Practical Advice

The expanded format list is fun, but you don’t want to pick a file type just because it sounds like a sci-fi spacecraft.
Here’s a realistic cheat sheet for normal humans:

Troubleshooting: When the Hidden Formats Don’t Show Up

1) You’re holding Option at the wrong moment

The timing matters: hold Option (⌥) and then open the Format menu.
If you open the menu first and then press Option, you may still see the “short list.”

2) You’re exporting something that doesn’t support that format

Not every format works with every source file. For example, exporting a multi-page PDF to an icon format may not make sense, and Preview won’t always offer it.
When in doubt, try exporting from an image file first (like PNG or TIFF) and see if the option appears.

3) The export dialog is “collapsed”

Some export panels hide extra settings until you click buttons like Options or Show Details (wording varies by version).
If you don’t see much besides a filename and location picker, expand the dialog and try again.

4) You want a format that Preview simply doesn’t support

Preview can’t be extended with “add-on export formats” the way some pro tools can. If it’s not in the list (even the Option list), you’ll need a different app,
an Automator/Shortcuts workflow, or a command-line converter.

Optional Power Move: Make “Save As…” Always Available

If you’re tired of holding Option every time, you can add a dedicated keyboard shortcut for “Save As…” using macOS keyboard shortcut settings.
This is a legit, built-in method, and it works either for Preview specifically or across all apps.

1. Open System Settings (or System Preferences on older macOS versions).
2. Go to Keyboard > Keyboard Shortcuts.
3. Select App Shortcuts.
4. Click the + button to add a new shortcut.
5. Choose Preview (or “All Applications” if you want it everywhere).
6. For the menu title, type exactly: Save As… (including the ellipsis characters).
7. Assign a shortcut (many people use Option (⌥) + Command (⌘) + S).

Important: depending on the app, forcing “Save As…” to appear this way can replace the default “Duplicate” behavior in the File menu. If you love Duplicate, proceed
with caution.

Specific Examples You Can Use Immediately

Example 1: Convert HEIC to JPEG for compatibility

If someone can’t open your HEIC images (or a website refuses them), open the HEIC in Preview, go to File > Export…, choose JPEG,
adjust quality if needed, and save. It’s quick, clean, and doesn’t require extra software.

Example 2: Export an image as GIF (hidden format)

Open the image, go to Export…, then Option-click the Format menu and select GIF. If you’re doing an animation,
note that Preview isn’t a GIF animation editorit’s best for exporting a single frame/image as GIF or converting existing assets.

Example 3: Batch convert screenshots from PNG to JPEG

Open all the screenshots in Preview, select them in the sidebar, use Export Selected Images…, pick JPEG, and lower quality slightly
if you need smaller sizes for emailing or uploading. One export later, your storage anxiety drops two levels.

Conclusion

Preview’s “hidden export formats” aren’t a hackthey’re a built-in power feature hiding behind the Option key. Once you know to Option-click the Format menu, Preview
stops being “that thing that opens PDFs” and starts acting like the stealthy conversion tool it’s been all along.

Use Export when you want a new version in a different format, use the Option-revealed Save As when you want a renamed copy (with extra control), and batch convert when
your to-do list starts looking like a file extension parade. The Option key isn’t just a keyit’s basically macOS’s way of whispering, “Psst… there’s more.”

My “Option-Key” War Stories (Experience)

The first time I found the hidden export formats, it felt less like “discovering a feature” and more like stumbling into a secret room in a video game. I was trying to
do something embarrassingly normal: send a logo to a colleague without wrecking transparency. Preview offered JPEG, which would turn the background into a sad little
rectangle, and it offered PDF, which was somehow both too big and not what anyone asked for. PNG was there, surebut I also needed a legacy format for a tool that had
apparently been last updated during the reign of flip phones.

So I did what any rational person does: I stared at the export dialog like it owed me money. Then I remembered the Option keythe Mac’s official “there’s more, but only
if you’re worthy” button. I held Option, clicked Format, and suddenly Preview started speaking fluent nerd: GIF, BMP, icon formats, oddball standards, and a couple of
choices that made me think, “Is this a file type or a Scandinavian metal band?”

After that, it became a habit. Need to turn a HEIC photo into a JPEG before uploading to a finicky website? Preview. Need to batch convert a folder of screenshots so a
shared drive doesn’t hit the ceiling? Preview. Need to hand off assets to someone using a pipeline that insists on an older format “because that’s what the system
expects”? Previewplus Optionplus mild disbelief that this is still a thing.

The funniest part is how often the hidden formats solve problems that look complicated on the surface. People will download converter apps, upload files to random
websites, or run command-line tools they don’t fully trustall for a job that Preview can do in about ten seconds. It’s not that those methods are wrong (sometimes you
really do need advanced conversion tools), but it’s wild how many “I need software for this” moments turn into “oh… I just needed Option.”

My favorite “saved the day” moment was converting a pile of images for a teammate who needed a specific format for a design handoff. We were on a deadline, and the
conversation was drifting toward “let’s just recreate them.” Instead, we opened everything in Preview, selected all thumbnails, exported in one batch, and Option-clicked
our way into the exact format list we needed. No drama. No download. Just the quiet satisfaction of using the tools already on the Maclike a responsible adult, but
with slightly more smugness than necessary.