HT2506 Viewing images in Preview at actual size

Why does Preview open an image and display it in a size much smaller than the actual size?
The default is marked as "Actual Size" in the View menu, but it's much smaller than actual size. Nothing in Preferences changes this.
(I've never had a problem with this on my older Macs.)
Thank you!

Thanks, but that's not it I'm afraid. Here's what I mean. The image on the right is the actual size, as opened up in a web page. The image on the left is how Preview displays it when the file is opened. And hitting ⌘-0 doesn't change the size, only zooming does.

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Thanks, but that's not it I'm afraid. Here's what I mean. The image on the right is the actual size, as opened up in a web page. The image on the left is how Preview displays it when the file is opened. And hitting ⌘-0 doesn't change the size, only zooming does.

Preview's Actual Size is Not 1:1 pixel Actual Size?

I've just noticed some strangeness in Preview not loading in a full jpg resolution.
I have a .JPG photo that's 1920x1280.
My screen resolution is 1920x1080.
I double click the photo to load it into Preview. When viewed at Actual Size, there are no horizontal scroll bars (only a vertical one) and Preview's window is not from edge to edge of my monitor---it's perhaps about 80% my screen width.
How can that be?
Also, if I zoom even one level in Preview, the image appears to be pixelated. Conversely, if I load the image into photshop and CMD++ it till the title bar reads 100%, the image does in fact appear to be higher resolution/sharper (you can see more detail) and naturally has scroll bars since it can't be exactly as wide as the screen is. So it works normally at 100% pixel size in photoshop, giving me a 1:1 pixel match. But Preview doesn't. How can that be?
I assume one could test this by using a photo that's the same size as their screen resolution in order to check --- you should expect horizontal scroll bars, right?
What am I missing?

Close!
But that did lead me to find a checkbox at the bottom of the Images tab in the Preview Preferences called:
"Respect image DPI for 'Actual Size'".
You must uncheck that, and then it will load in all the pixels of your image! Cool.
Strange that this isn't the default tho... but I suppose people who just mindlessly snap high megapixel photos don't need to zoom in and see additional detail contained in their photos when using Preview---which would make Preview load faster that way.. But who knows.. Nice to have the option to change it back by unchecking that box.
Thanks.

Previewing the actual size of the print

I have the image in resolution 2848x4288
i want to print it in 20x30 size
can i preview and see the actual magnification of the image how it is going to be printed?
I am aware i cannot see the whole image cause my screen is too small by i want to see at least part of the image in real print size?
thx
Bart

I've asked for this feature for a very long time (since before LR 1 came out). The answer is no, other than to do it manually and even that is restricted by the limited and discrete magnification levels provided in LR.

Cannot view images using Preview

Happy New Year to all,
I cannot view .jpg files in Preview. I have .jpg files in various folders. If I:
a) Double click the .jpg file in Finder the Preview icon arrives in dock but no image is displayed.
or
b) Right click the .jpg file in Finder and select open with Preview the same as above happens.
If I then right click the Preview icon in dock I can see the image file name with a 'tick' mark next to it but no image is displayed.
The Preview help section in Apple is no help whatsoever. Any ideas ?
I am fairly new to the Mac so do not know if I have had this problem from day one, never tried before.
Thanks

Thanks for the feedback. Now, close out the topic.
Since you're a newbie, check these out:
Switching from Windows to Mac OS X,
Basic Tutorials on using a Mac,
MacFixIt Tutorials,
MacTips, and
Switching to the Mac: The Missing Manual, Leopard Edition.
Additionally, *Texas Mac Man* recommends:
Quick Assist.
Welcome to the Switch To A Mac Guides,
Take Control E-books, and
A guide for switching to a Mac.

Bridge - unable to view image in preview box

When I open bridge and got to Filstrip or Essential workspace I can not get the image to appear in the preview box.

Most of the problems with filmstrip mode relate to the vido card. Make sure you have latest
dirvers. If card marginal one can go to advanced preferences and click
on software rendering.

How to view image at actual size?

I am confused by the Fireworks (CS3) image size settings. I set the canvas size at 3 inches by 3 inches, but when I measure the image on the screen with a ruler, it measures only about 2 inches across, even though the magnification setting is set at 100%. What does the size setting mean? Will the image be 3 inches wide when it is printed? How can I get the image to display at actual size?

As for ease of use, I really think it comes down to what you're used to and what makes you the most comfortable.
I personally find Illustrator much more intuitive when it comes to things like the pen tool and vector editing, and options such as Live Color and Live Paint are likewise extremely useful. However, each piece of software has its own strengths and weaknesses, and if you can use the right tool for the right situation, I think you're in a good place
As for the "set relationship" between print size and pixel size, like I said, the fundamental problem is that the "pixel" is a relative unit of measurement, primarily intended for screen output. We've already established that the 3" x 3" canvas displays at different dimensions on your monitor than it does on mine. This could be because of your display resolution setting, your monitor size, and even the physical size of the "pixel" itself on your monitor. So already we are facing problem number one—trying to determine the physical size of a non-tangible element on the screen—before we even hit the printer settings.
If you are only going to print on one printer at your home or office, and you are always going to be using the same monitor and screen resolution, you can probably work out some kind of mathematical relationship between what you see on screen and what you print. However, once you start working at higher canvas resolutions in Fireworks (to display photographic content more crisply, for instance), all of that will go out of the window. The question is whether you want to do math every time you create a canvas or draw an object.
The other issue with using Fireworks to created printed material is that Fireworks is an RGB-based program, whereas the print medium generally works with CMYK. The result is that you may find some discrepancies between the colors you see on screen vs. what you see coming out of the printer.
There are a lot of advantages to using dedicated vector-based programs for print, and Illustrator is a decent program that allows a lot of flexibility for creating work that can be used in print and on the web. However, if you still want to use Fireworks for print, keep in mind that there are some hurdles you may need to overcome that may give you some headaches in the long run. Then again, it depends on what kind of output you expect to see coming out of that printer, and whether you're ultimately happy with what you see.
Jeff

How to view the document in actual size (pixel perfect) in CC 10?

Hi there,
currently I'm working on a Mac with InDesign CC (10.0.0.07) and I use it for ui, so I need to view my document in the actual size (pixel perfect). In CS 6 I was able to double click on the zoom tool and my document showed up in like 74% or so and it was pixel perfect. This is what is really important when you use InDesign for screen layouts. And now with the new CC update I'm not able to do this anymore.
Has anyone a suggestion how to fix this, or has had the same experience? This is really essential for designing websites.
thanks,
Stefan

@Stefan – this behavior has changed from CC v9.2 to v10.0.
To get what you want you need a ExtendScript (JavaScript) once written by John Hawkinson. That code snippet will change preference settings not exposed to the user, the Custom Monitor Ppi, to 72 ppi and enable their usage.
app.generalPreferences.customMonitorPpi = 72;
app.generalPreferences.useCustomMonitorResolution = true;
Before running the script, it would be best to check, how the actual values are with the following snippet:
alert(
    "Custom Monitor PPI currently is set to: "
    +app.generalPreferences.customMonitorPpi
    +"\t\t"
    +"Usage is set to: "
    +app.generalPreferences.useCustomMonitorResolution
To change this behavior back to default, use the following line of code:
app.generalPreferences.useCustomMonitorResolution = false;
Uwe

Scale an image to actual size?

I often use the Crop Tool to get part of an image to print at actual size.
For example, Crop: Width 7cm @ Resolution 600 pixels/inch (same as my
printer), then select a known width of 7cm then crop and print.
I figure there must be a way without actually cropping the image, perhaps by selecting the known dimension.
I could do the math myself, but I figure Photoshop CS4 can do it for me.
Any suggestions?

Nigel: Here is a method that may work for you.
(1) Since you have PSCS4, you are able to convert your image to a
    smart object.
(2) Create a layer mask that corresponds to the physical size you
    would want the known object to print at. E.g., your known object
    (the coin) is 20.3mm wide, so you create a rectangular marquee
    that is 20.3mm wide:
    (a) Create an arbitrary sized rectangular marquee, then use
        Select->Transform Selection and enter the desired height and
        width into the object bar (e.g., 20.3mm <tab> 20.3mm) and
        commit. It doesn't matter where in the image you make this;
        all that matters is that you have a 20.3x20.3mm marquee.
    (b) Turn this marquee into a mask by clicking on the masks panel
        and then the icon second from the right. Unlock the mask
        from the smart object by clicking on the chain icon.
(3) Use this layer mask to calibrate the image against the known
    object:
    (a) Click on the smart object icon in the layer, then use
        Edit->Transform (with the aspect ratio locked) to move the
        known object (coin) into the mask and scale it so it just
        barely fits into its width.
    (b) Your smart object is now scaled properly in Photoshop. You
        should now delete (or disable) the layer mask, which is no
        longer needed.
(4) Use the Move tool, if necessary, and the Rectangular Marquee tool
    to select the area of the image to be printed.
(5) In the Print dialog, set scale to 100%. Don't use borderless
    printing, which typically reduces the printing scale slightly.

How to display at true actual size (Mac)

The background: InDesign was unable to display work at true actual size until CS6 came along. (So that 1 inch on the screen rulers equals 1 inch on a physical ruler.) Unfortunately, CS6 still doesn't get it right if your display is set to something other than its native resolution. For example, if I set my 27" NEC SpectraView display to "Best for Display" in the Displays system preference panel, then viewing at "Actual Size" in Indesign CS6 achieves true actual size. But that resolution is way too high, making the features of the user interface way too small. The comfortable display resolution is "scaled" to 1920x1080, which provides a nice 2-page layout viewing area (at true actual size) plus a comfortable user interface. However, InDesign CS6 ignores this and continues to draw the "Actual Size" view based on "best for display" resolution, and that results in a greatly shrunken image. Acrobat Pro has gotten this right for several versions now, but it is apparent from this and other CS shortcomings that the different product groups at Adobe aren't very good at what Samsung does and fail to copy each other's work.
The solution to achieving "true actual size" is a script written by Dave Saunders (and probably others) some time ago:
//by Dave Saunders. Replace the percentage number with the correct value for your screen
app.layoutWindows[0].zoomPercentage = 113;
If you're like me and don't really use scripts, here is what to do with it on a Mac (with apologies to Dave and other experts who know a helluva lot more about this than I do):
1. Copy the text for the script and paste it into the blank window that opens when you start ExtendScript Toolkit CS6 (in Applications>Utilities>Adobe Utilities - CS6). Leave it open.
2. Go to Acrobat Pro>Preferences>Page Display and under Resolution note the number associated with "Use system setting". (On my system it is 81 pixels/inch.) I also suggest enabling that setting if it isn't, so that Acrobat also displays at true actual size.
3. Divide the number from Acrobat by 72, then multiply by 100. (This is essentially a percentage calculation of system resolution over the conversion value of 72 points/inch, which produces 112.5 in my example. I round it to 113.)
4. In the open script, change the number to what you got from the above result (113 in my example).
5. Save the script with a name such as "True actual size.jsx" and leave it on the Desktop where you can get it at later for dragging.
6. In InDesign, go to Window>Utilities>Scripts, then right click on User and choose Reveal in Finder. Drag your script into the User folder. (I recommend option-dragging it to leave the original on your Desktop for archiving.)
7. Test the script in an open InDesign document by double clicking on the script. The display should now show your work at true actual size.
8. The scripts window is awkward at best, so the last step is to assign a keyboard shortcut to your script. I use Control-1. Go to Edit>Keyboard Shortcuts… and choose Scripts. Scroll down to the bottom, where you should see your script listed. Highlight it and enter Control-1 (or whatever you prefer) into the New Shortcut window and click Assign. Then click Save. You won't be allowed to modify the Default set, but I was fine with "Default copy".
Now whenever you want to view your work at true actual size, just hit Control-1 (or whatever you chose for a keyboard shortcut).
You might want to copy these instructions into a TextEdit file and put it with your script file in a folder that you can find when the time comes to upgrade to CS7, because I'll lay odds that you're going to need to achieve true actual size all over again.
Lastly and far from least, thank you for the script, Dave! If you or other pros come across this and see corrections or improvements, please set me straight.

Finder -> View menu -> Show Status Bar
Regards.

Resizing an image in Preview

When I view some of my pictures in Preview they are way too big. I know I can zoom out or zoom to fit or change the size int the Scale window, but I want to make the size change permanent. Isn't there a way to do this?

These are instructions from Preview in Lion, but I'm sure they're similar in 10.4.
Open an image in Preview/Tools/Adjust Size. You should "Save As" and keep the originals. Once they are resized, you can not enlarge them agian without losing quality. 1024x768 pixels is a good overall size for viewing on the computer and emailing.

How can I make Preview open to actual size for all images?

In Snow Leopard, Preview open all images actual size. In Mountain Lion, vertical images (and all images larger than the screen) fit to the screen and I have to use the keyboard command to see actual size. What happened, and is there any way to fix this?

Open a PDF in Preview. Now, right-click on the toolbar and select Customize Toolbar ...
Drag the circled items from the customize panel to your toolbar and release there.
Click the middle button in the Zoom panel. The Scale will report 100%.
Your future Preview documents will open at 100% now.

Preview won't open in Actual Size

Small problem, the option to have images open as Actual Size in preview is gone, now every image I open I have to press CMD 0 to make it the normal size. Where is the option did I overlook it? Can I downgrade Preview to the 10.6 version?

I believe the option to default imgs to actual size is really gone, but once you open a series of images in Preview, focus the Preview's sidebar, select all items (cmd+a) and then press cmd+0 ... now all imgs will be viewed at Actual Size. Once you close Preview you'll have to do it again :-(

Preview 'Actual Size' isn't working properly

Hi
This is a long-standing minor irritation, but I would love to resolve it if possible. Preview opens an image and fits it to the screen size which is fine. If I then click Actual Size, it gives an image which is twice the actual size! I then have to do a single Zoom Out to get the real 'actual size' (which is still bigger than the fit-to-screen size).
This happens very often, but not every time (some images seem to work ok). Most images I work with are jpegs.
Anyone else notice this? Is there a solution?

What you report is normal.
An image at 150 dpi will display at half the size as one at 72 dpi or
72 dpi will display at twice the size of one that is 150 dpi (actually 144 is twice 72 but close enough)
_It is inverse._
I have already said this.
If one was to increase the ppi the 'actual size' would become smaller.
and the opposite also applies. They have an inverse relationship.
You are making the mistake of thinking that Preview is an image viewer.
I am NOT talking about the 'preview' that can be chosen when printing a document, I am talking about the APPLICATION Preview, the one with the dock icon that looks like a couple of photos with a jewellers loupe sitting on them, and with a menu bar that has Drawer, Rotate, Zoom
The Print Preview and the one in the Dock is one and the same. It is not an image viewer, that is just a feature. Preview is primarily a Printer Preview Utility. I have already said that. It can show documents and it can also show images.
Because it can show images you think it should be like an image viewer like Photoshop. It is a Print Preview application designed to show how an image will appear before it is sent to print.
The lower the DPI - the larger the actual size will be across your monitor's screen.
It works in DPI resolution to talk to the printer.
Photoshop works in absolute pixels X pixels to talk to the screen. They are doing two different things and you fail to see that. There is nothing wrong with your Preview application. Apple's Preview is the same thing as Photoshop's Print Preview.
Rather than lock on doggedly to your misconception, put it aside for a moment and take a fresh look.
I've done repeating myself.

Preview not showing in actual size

When you open a group of images, select them all and make Preview open them in Actual size (Why oh why is there not a setting for this - to open all images in actual size!?), why is it that when scrolling between them using gestures just makes Preview show the image resized yet again?
MacBook Pro 13 (Early 2010), Mac OS X Lion

squidz wrote:
Interesting...I don't recall seeing that pref in the past. I'm using v8.1.6 and it is there. "System setting" is 99 px/inch. And here all these years I thought my Macs were 72 px/inch but Acrobat believes it to be 99. Which also explains why at 75% they looked closer to actual size.
I changed that setting to 72 and it display perfectly. But, as you said, that setting on someone else's system is beyond my control.
Seems pretty screwy that Acrobat itself drives how a user sees a document rather then the document delivering it's actual dims/resolution. I'm simply surprised that I've not known this all this time.
It depends upon the resolution of the monitor used and the Graphics Card used in your system.
Usually it would be 72. but for example above in the Screen shot I showed my PowerBook 17" does infact use 98DPI.
I don't know whether you noticed the drop down box for Zoom level All I have shown is fit to Page but there is also fit to width along with percentages going all the way up to 200%.
If you want you can set back to 99 and change the zoom level you normally see when openning a file.

HT2506 Viewing images in Preview at actual size

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