Resizing symbol instance messes up pixel grid alignment

Sometimes when I drag a new symbol instance to my artboard and resize it, the instance looses it alignement with the pixel grid.
This happens despite the fact that...
I checked the box for pixel grid alignement when I created the document
the symbol option is set for align to pixel grid
the original shape in the symbol is aligned to pixel grind
the original shape has the align to pixel grid check box in the transform panel checked
So why when I resize the symbol instance does it break the pixel grid alignmnet and result in a blurred 1px stroke?

From you description it seems everything is normal in AI land - for symbols, the decisive factor is still the registration point. If it is off even by a nanometer, AI will resample and that can ahppen with pixel grid on just as well. Of course there may be specific extra conditions in your documents that intensify the problem...
Mylenium

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Symbol isolation mode, the pixel grid is not aligned to the ruler.

If you create a symbol that is pixel perfect, exit out of the symbol and go back in, the pixels bleed into each other because the pixel grid is not aligned correctly. Instead it is aligned to the global document grid which the symbol content is not placed in. It makes no sense to align the pixel grid to the global coordinates when the content by definition is not present in it.
This makes it impossible to use symbols to edit pixel perfect objects because any editing other than the original creation does not display pixels but pixel bleeds.
This is a valid bug in Illustrator CS6. Please specify:
1. Do you understand what I am specifying? If you do not I will provide images as I wish to resolve this functionality.
2. Please specify if it has been fixed in Illustrator CC. I do not have an available Win7 installation to test CC but if it is I will acquire one.

Thank you submitted. Input from Adobe's developers or developer relations representatives on this forum to expedite a solution to this bug would be greatly appreciated. As Adobe's products are now on a subscription one would hope it's product roadmap would accelerate with regards to Illustrator considering the necessity of Vector graphics in a market with multiple largely varying resolutions.
If you create a symbol that is pixel perfect, exit out of the symbol and go into Symbol edit mode (from the Symbol Panel or when a symbol's dimensions have been modified) the Pixel Preview grid is not aligned correctly. The Pixel Preview grid is nonsensically aligned to the document's coordinates. It makes no sense to align the Pixel Preview grid to the document's coordinates in symbol edit mode as it causes an inability to see the Pixel Preview without bleeding.
This makes it impossible to use symbols to edit pixel perfect objects because any editing other than the original creation does not display pixels but pixel bleeds.
Again the fundamental issue is that: There is no reason to align the Symbol Edit mode to the global Pixel Preview grid. The Pixel Preview grid should align to the Symbol coordinates.
http://i.imgur.com/KB2CdEx.jpg
The screenshot is in Pixel Preview. Moving the contents of the Symbol in Edit mode from it's correct position to temporarily align to the Preview Pixel grid is incorrect:
1. Because you just moved the correctly placed contents. The Symbol placed in it's parent to prevent pixel bleeding is now incorrect.
2. On a subsequent edit it would be misaligned because as specified, Illustrator aligns the contents of Symbol editing mode nonsensically to the global Pixel Preview grid.
With regards to Align to Pixel grid
1. This is a bug regardless of improvements to Align to Pixel to facilitate an acceptable workflow.
2. Align to pixel grid is not an acceptable workflow:
a. Not possible to place path vertices in the middle of a pixel to facilitate pixel strokes.
b. Mangles rounded corners.
d. It is not prudent to rely on an arbitrary algorithm with regards to forward or backward compatability in creating anything, considering the possibility of mangling and/or changed behavior as specified above.
The workflow to create pixel perfect UI elements is to position vertices absolutetly.

Why isn't symbol isolation mode aligned to the pixel grid?

So apparently, symbol isolation mode isn't aligned to the (global apparently?) pixel grid, rather the paths are displayed aligned to the origin presumably. The origin is not aligned to an intersection of the grid. Thus it becomes very difficult to create pixel perfect symbols. Paths that are snapped to the pixel grid are then redisplayed offsetting from the origin, causing bleeding in the isolation mode. If the origin is specified as the center that is (presumably it would work fine for a corner), you're going to have a bad time.
Is this fixed in CS6?
Also, has there been a feature added in CS6 to reposition the origin as the center of an object?

Okay I have figured out a workflow that generally resolves all the peculiar behavior with align to pixel and symbols.
Do not align to pixel your paths. Align to pixel your symbols. The symbol origin will be aligned to pixel and there will be no bleeding in isolation mode and you can snap to pixel the symbol itself.
You still have to scale/adjust your snapped to pixel paths as they are expanded on a paste for some unknown reason. This is an issue of another thread but may be useful to complete the workflow.
It still quite an issue though that for absolutely no reason, symbols without align to pixel are displayed as displaced from an arbitrary position of the origin in isolation mode. This is a bug I feel in the implementation.

Death to "Align to Pixel Grid".

Now that we have responsive design and a myriad of different display sizes and resolutions can we please get rid of that pesky "Align to Pixel Grid"?
If I want pixel perfection, I will type values into the transform panel.
I've had enough of Align to Pixel Grid doing the following;
1. Distorting small vector symbols.
2. Misaligning anything with a stroke.
3. Automatically turning on with symbols despite the fact that I have it off by default and no part of the symbol has it activated.
4. Making it difficult to align triangles and other non-rectangular shapes
5. Just generally second-guessing me. I know you're a computer and you can handle like a hundred billion instructions per second but I'm still running the show here!
It's now barely relevant. Surely it's time to kill it.
Please?

The specific use is web and other screen media design. I am thinking you have another issue such as a corrupt preference file. The reason I think that, is I have not heard of any complaints from anyone else, including myself. Granted, it maybe possible that some of your issues have not been noticed, but seams like they would be.
When creating a new document, using the print preset should also disable the snap to grid.
Try holding down the three shift + ctrl/cmd + alt/opt modifier keys when starting illustrator.

BUG - Align to pixel grid fails when object is on artboard edge.

When I am positioning an object (a rectangle, for instance) and am attempting to position it along the right edge of the artboard, with Snap to Pixel turned on, as I drag the rectangle down the artboard edge, the object no longer snaps to pixel.
Related bug, you can't turn off snap to artboard edge. Not sure why.
Illustrator CS5 on a Mac.

Align new Objects to pixel grid setting works perfectly for all tools in Adobe Illustrator CC (17). In Illustrator 2014 CC (18) the rectangle and rounded rectangle tool do not automatically align to pixel.
This thread says it's because of the new Live Rectangle tool objects are exempt from the Align to Pixel grid until you release them by expanding them.
Bug? Illustrator CC 2014 and Pixel Grid settings not working.
I'll be using the old version until Adobe 'fixes' this.

Align to pixel grid

Hi all,
My plugin uses AIShapeConstructionSuite for creating geometric shapes.
I don't want them to be aligned to the pixel grid, they are however when "Align new objects to pixel grid" is enabled in the current document.
Is there any way to disable this from the SDK?
Thanks.

Found it, apparently it has to do with the pixel-perfect mode of an art object, which can be set with AIArtSuite.

Align New Objects to Pixel Grid by Layer

It would be very nice to have the setting "Align New Objects to Pixel Grid" at the layer level.

kaanungur,
I am afraid you have come across the Live Rectangle bug sorry feature where it refuses to align to the Pixel Grid.
To get round it in each case, it is possible to Expand the Live Rectangles to get normal old fashioned rectangles, or to Pathfinder>Unite, or to use the Scale Tool or the Free Transform Tool.
A more permanent way round that is to create normal old fashioned rectangles, after running the free script created by Pawel, see this thread with download link:
https://forums.adobe.com/thread/1587587

Line weight changes when using Align to Pixel grid

When I select Align to Pixel Grid in the Transform Panel, I see line weight changes occur. I try to change the line weight in the either the Stroke or Appearance panel and it will not change, no layers locked, any ideas how to change the line weight?

Chouettecacahuete wrote:
... I noticed that the line increases from 0.5pt to 1pt mainly (although not always) on straight lines, anything with a bezier curve seems to remain as 0.5pt.
Just try this, with snap to pixel grid on, create 10 pixel long straight horizontal 1pt line with the pen or line tool. You won't be able to change the stroke weight to other than whole numbers. But if you rotate the line with only 0.01 degrees by typing this for rotation in the Transform panel, then you can change the stroke weight to 1.25 for example. When creating artworks for for screen display always verify the result with View > Pixel Preview turned on.
tonyharmer wrote:
...I only referred to Photoshop to illustrate the behaviour - vector tools aside, everything you do in Photoshop has to be whole pixels
As I said, Photoshop doesn't have snap to pixel grid feature like Illustrator. You can easily create fuzzy lines in Photoshop if you are not drawing them precisely in the middle of the pixels. To check what I'm talking about try this In Photoshop, create a new document with a very small pixel dimensions like 20 x 20 pixels and zoom to the maximum 3200% to see clearly the result. Fill the image with light gray color so you can see the pixels when View > Show Pixel grid is on. Then with black color try drawing a straight line with any tool that creates pixels like a hard brush or the line tool used in pixel mode, and try using constraints like holding Shift while dragging. You will see that unless you draw the lines exactly in the middle of the pixels it will be fuzzy and not clean. The only way to ensure not fuzzy lines in Photoshop is to turn off the anti-aliasing. You do this by unchecking the anti-alias for tools that have this option and instead of burshes use the pencil tool (which is brush without anti-aliasing). And Illustrator works the same too if you turn off Anti-aliased Artwork in its general section of the preferences and view the result with View > Pixel Preview, you don't need to have the Align to Pixel Grid on, the aliased result will be the same like in Photoshop.

Align New objects to pixel grid does not seem to work - Windows 7

Here is another issue I've been struggling with for a while.
Scenario:
1. Working on a web UI, so want to use pixel grid, which is handy. So I create a new document, web profile and making sure 'Align New Objects to Pixel Grid' is selected:
2. Yay! We have a nice and clean new document, cannot wait to start drawing rectangles! But let's double-check if everything is hunky dory:
3. Right! Let's go and start making rectangles!
4. And NOOOOOOOO!!!! As you can see in the image above, the rectangle is not aligned to pixel grid (look at the values), and it's "Align to pixel grid" option is not selected. Let's triple-check our options:
So yeah, there you go. It's all lies! You have to check the check box AFTER you create the shapes FOR EACH SHAPE!
Illustrator why you do this?! What am I missing here?!
Windows 7 Ultimate
AI 18.1.1 (64-bit)

kaanungur,
I am afraid you have come across the Live Rectangle bug sorry feature where it refuses to align to the Pixel Grid.
To get round it in each case, it is possible to Expand the Live Rectangles to get normal old fashioned rectangles, or to Pathfinder>Unite, or to use the Scale Tool or the Free Transform Tool.
A more permanent way round that is to create normal old fashioned rectangles, after running the free script created by Pawel, see this thread with download link:
https://forums.adobe.com/thread/1587587

Fixing warped smaller text due to 'Align to Pixel Grid'

Hi
Hoping someone can help.
For my fabric design business I usually create a 16.5x16.5cm artboard add a 16.5x16.5 cm rectangle and then add my text, making a repeatable pattern, before selecting it all and copying it onto a 33x33cm for print. However lately I haven't been able to get my rectangle to stay at 16.5cm, it kept changing to 16.51x16.51cm so I did a bit of research and started unselecting 'Align to Pixel Grid' when I created a new document. However once I selected my whole design before copying it to the larger artboard, it would always be at 16.5001x16.4747 or something like that so I would have to check,uncheck the 'Align to Pixel Grid' box in the Transform panel before I could finally get it to all stay at 16.5x16.5cm otherwise my designs were coming out with gaps between them.
Now all of my smaller writing is printed out warped, which again after researching it seems to have something to do with the the pixel grid. Can someone please tell me how to fix this. And why all of a sudden I'm having these problems! I've been using this method for months and have never had a problem.
Thanks

Carla,
I am afraid you will have to start over, more or less.
It may be possible to rescue parts if you have saved earlier versions with undistorted parts of artwork.
And it may be possible to correct simpler (parts of) artwork by moving Anchor Points with the Direct SelectionTool or something, based on the difference between desired and present dimensions.

Perfectly aligned on pixel grid, but X and Y cord. say different?

Hello, I made this shape perfectly on the pixel grid with 'Snap to Grid', 'Align to Pixel Grid', and 'Show Grid' on. Every anchor is perfectly placed (i.e. not in the middle of a pixel) but for some reason my X and Y cordinates say it's off by half a pixel. When I change the .5 to .0, it unaligns my object. Why is it doing this? There is an example below of what it's doing.

Erratic Fox,
Your artwork is 12 by 9 pixels, so the Y value of the centre has to end at .5; and the X value is an integer as it should be.
If you set the Transform palette Reference Point to any corner, I am sure you will get integer values only.

Enabling 'align to pixel grid' makes object jump more then i want

Hi,
When i enable ''align to pixel grid' from transform option,
The object/point move more than what i want (it shifts in a fixed place)
I tried 'keyboard increment' to 0.1 but it seems it does not works when 'align to pixel' is enabled.
Please help, Thanks

Jimmy,
Align to Pixel Grid will do just that, so you basic unit (of moving and whatever) is 1 pixel = 1 point = 1/72 inch.

Align to pixel grid for new object does not work

I have set my document to align new objects (shapes) to pixel grid under the advanced settings
I have gone into the options on the transform panel and set the check box to say all new objects should also align to pixel grid
But when I create a shape it doesn't work, I end up with shapes with 3 digit decimal sub pixel sizes. eg. 34.536px
If I want an object to align to pixel grid I'm having to set it individually for each object.
Is this a bug that will get fixed or is there some work around, it's frustrating to have to set the feature for every single object I create

Align new Objects to pixel grid setting works perfectly for all tools in Adobe Illustrator CC (17). In Illustrator 2014 CC (18) the rectangle and rounded rectangle tool do not automatically align to pixel.
This thread says it's because of the new Live Rectangle tool objects are exempt from the Align to Pixel grid until you release them by expanding them.
Bug? Illustrator CC 2014 and Pixel Grid settings not working.
I'll be using the old version until Adobe 'fixes' this.

When I resize image, The image lose thier shape & align.

illustrator cs6
OS : windows 7 32 bit
CPU : interl(R) Xeon(R) CPU E5462 @ 2.80GHz 2.79GHz
Memory : 4Gb
VGM : ATI Radeon HD 2600 XT 256 MB
when I resize image, I press shift & alt button.
and all image were outline stroked.

it means
edit -> preferences -> general
-> uncheck the Scale Storkes & Effects
windows -> transform -> (show options)
-> uncheck the Align to Pixel Grid
thanks larry.

Edit Disable Panel Grid Alignment does not affect the Positioning of Front Panel Labels

In LabVIEW 2010, when I choose Edit>> Disable Panel Grid Alignment the positioning of Front Panel objects gets much finer so that I can make small adjustments. Put it does not seem to affect the positioning of front panel object labels. These object labels still move in very coarse increments and do not allow me to position them carefully.
How do I turn off the Grid Panel alignment for Front Panel Labels?

The positioning of labels you encounter has not so much to do with any grid, but with the fact that for labels, LabVIEW attempts to snap them to one of the control corners if you get close enough to the owning control. Outside of a certain range of the owning control you should be able to place them easily on any pixel. The snap behaviour of owned objects is not configured through the panel grid option. I'm not aware of an option to disable this behaviour, but usually find it rather handy instead of annoying. If it happens to not be exactly as desired, I adjust with the label selected and using the cursor keys.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Resizing symbol instance messes up pixel grid alignment

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