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Queuing management expert advances sales enablement strategy with HubSpot. A conversation with industry experts who challenge the status quo for inbound marketing. By Courtney Fraas. So many file formats, so little time. But which format should you use? Why is that image pixelated? How do you remove the white background behind that logo anyway?
If you handle marketing for your business, understanding file formats is key for, well, everything. Raster images are comprised of pixels, which are the smallest component of a picture depicted on a screen. When placed in a grid, individual pixels create a larger image. In the example below, the zoomed-in image on the left displays individual pixels. Although EPS files are supported by most graphic design programs, page layout applications don't usually support modification of an EPS file's text, lines or coloration, which is another potential disadvantage of using an EPS file during production work.
So if it's not print ready you'll have to go back to the original illustration to modify it and save again. It does open in Silhouette Studio though. The Comparison The main differences between the two file types are how they are best used.
Another important thing to note is that an SVG file format is an uprising feature on a web platform, whereas EPS format is dying off and is reserved for old vector graphics. Here is a chart showing the basic comparison between SVG and EPS: Which file type you decide to use really comes down to what you're using it for. If you are a crafter working with electronic cutting machines or are designing files for crafters then I would recommend using SVG.
If you're designing a project that's meant to be printed such as Christmas cards or brochures for a business then I would use EPS. Now you are a little more tech savvy in your file type choices! Make sure to pin this to share the knowledge with your friends. Board index » postscript. Could someone please explain the difference between postscript and encapsulated postscript in a few words? Encapsulated PostScript is one kind of PostScript. But when people talk about PS vs.
Stone Ages. That option, when on, saves a full-sized preview ie flattened version of the file, which is what gets used by InD. That is for PSD files. The files become huge though. At least PDF will be opened by anyone :.
Hey Bob this PDP trick is awesome, especially, when you forget about the creator application. Great article! Awhile back, I wrote a blog article about the appropriate use of those file formats. Perhaps it would be helpful for other designers who have to prep files for use with consumer-grade software. Choosing to compress a printworthy PDF at the final output stage is one thing, but JPEG images have little place in a professional print workflow for a variety of legitimate reasons.
As there is no way to determine the compression level or generational iterations, any JPEG image is of less than optimal quality from the beginning; at best, you start with an image that has soft or grainy edges, and, often, the image is so chewed up that editing is a challenge without amplifying flaws. The latter point is why photographers prefer RAW. At worst? The format is also inflexible in that it excludes alpha channels. Why would anyone recommend using this tragic format for print? No one is saying that JPEG is good for files that are going to be further edited.
Please go back and read my post. The reason for this fairly technical but simply put, all RIPs have to downsample images when processing them. Because of the way JPEGs are compressed, you cannot predict how the downsampling is going to affect the overall image quality. Many printers, believe it or not, prefer not to use PDFs for the same reason. And the JPEG format was never meant for color separations because, again, the results are unpredictable. They have good reasons. I work for a large book publisher and have 21 years of both design and prepress experience.
Why invite a potential problem by using a format designed for the web? I, too, have been doing professional digital publishing since the late 80s, and I have seen and taught it all. David [email protected] : I still don? According the InDesign Help File p. A higher level of compression results in lower image quality; a lower level of compression results in better image quality, but a larger file size.
In most cases, compressing an image using the Maximum quality option produces a result that is indistinguishable from the original. Opening a JPEG image automatically decompresses it. Later on p. In regards to grayscale, photo, solids and patterns. Compression Determines the type of compression that is used:?
For most files, this option produces satisfactory results. JPEG is suitable for grayscale or color images. JPEG compression is lossy, which means that it removes image data and may reduce image quality; however, it attempts to reduce file size with a minimal loss of information.
ZIP works well on images with large areas of single colors or repeating patterns, and for black-and-white images that contain repeating patterns. ZIP compression can be lossless or lossy, depending on the Image Quality setting. JPEG Is the international standard for the compression and packaging of image data. It also provides additional advantages, such as progressive display.
Any JPEG artifacts are lost in the halftone conversion. Now — if I was doing a high-end publication, which required editing of images there is no way in heck that I would save them as JPEG. Selecting flyaway hair out of a white or dark background very common is straightforward in a lightly compressed image. If the image has been significantly compressed, the pixel blocks, even when they are invisible to the eye, interfere with the selection process and become a royal PITA, turning a two-minute quick extraction into a or minute ordeal with an unsatisfactory result at the end of it.
I almost never save tiffs nowadays. Eugene: No, when you save the image from Photoshop or whatever program as JPEG, the damage is done: the image is compressed and data is lost that you cannot get back. Trying to do that kind of editing on a JPEG image is painful for the reasons you explained. Or just leave them as PSD, of course. The problem is that a huge number of images start off life as JPEG now, because of digital cameras. Eugene: If you save a psd file as jpg, place it in indesign, and then save a pdf with zip compression instead of jpg or auto , then InDesign takes the degraded jpg image that photoshop created and saves it uncompressed in the PDF.
It just saves it in an uncompressed or less-compressed form. David: In the Real World hmm… there could be a book title in there somewhere there sometimes is no choice but a compressed jpeg. Big headliners the ones who fill stadiums often have only one or two authorized images for concert promotion.
The other factor is time. The ideal would be to use jpeg only as a final image format, but in some types of work it is more and more often, of necessity, a starting point.
One becomes quite skilled in image restoration, after a bit. Well that makes sense. IA before placing them, even if there are dozens to convert.
The same caveat about saving in PDF-compatible format applies. This has benefits: 1. The text inside PDF can be indexed and later found using simple Windows search box, which is awesome! As an old timer, started in using computer languages, active into the industrial quality control based on Vision Systems, in have some thousands photos from more than 20 years systems we installed.
I work for various textbook publishers on one-, two- and 4-process color books. These come from many sources, and in the 20 years I? Yes, you can do all of the things you? Pantone U, for example, and process black? Yet, if you place the same graphic as an EPS, the Package report indicates, correctly, that the graphic has only two colors?
Note that all other colors but and black have been deleted from the AI Swatches palette, and there are no colors other than black in the Swatches palette in ID when the file is placed. We are creating large images in Photoshop for walls and windows, that take us above the 30, pixel limit. The files themselves have large areas of transparency and fill color, so they save out under a gig and are not sluggish on our computers. We regularly work images around a 1gb in Photoshop.
I have a file that runs across 24 pages of an InDesign document— I have placed 12 instances of the file across each DPS. The image is supposed to be continuous, and placing it this way has allowed editing to be much easier. The file as originally built was a 72 dpi. Now that the project is reaching completion, I have upscaled the base document from 72 dpi to dpi for press.
This is because at least one of the dimensions of the new, upscaled file exceeds 30, pixels. Each format presents problems. My current situation is, as I said, sort of okay, in that I can make a TIFF which can be placed— but as David mentioned in the original article above, all my newly upscaled, merged Vector Smart Objects preview in Overprint Preview or with Display Performance set to High Quality as heavily jagged. I am away from my printer for another month, but I am reasonably sure that they will print as they look in Photoshop i.
Thanks all for the information I have read sofar. Can anyone tell me what the basic rules are for saving photos as a photoshop eps. That is, the EPS probably says, up in its header info which you can see if you open it in a text editor exactly which plates it uses.
B Kinney: Rules? Not sure what you mean. There are no clipping paths or imported vector images to account for, and it make the photo files larger than they need to be. Printers are quietly grumbling to me about the headaches they cause. Can someone provide me with some guidelines as to why you would save a photo as an eps? To get this to stop. To do this I will need to get a buy-in from my boss. B Kinney: I see. Check out this challenge article that Sandee wrote a while back.
Image quality on export to swf or interactive. If you have flash, import all of your images in jpeg format, then export them individually to swf from flash.
You can then place your swf image files into indesign and export the final document to pdf or swf while maintaing excellent image quality. Why does this work well……I have no idea, stumbled on it by accident. On one of my wine labels I have a starburst, an Illustrator eps file that now comes in with a white background and sort of a target symbol 2 concentric circles that shows when I move the cursor over the box that holds the image.
While I realize I can probably make a new one in InDesign now, I will have other eps files to deal with in my transfer to my new Mac. So what is the best replacement for EPS? Also, just repositioning the files takes a lot of time. A pain of EPS is that i cannot see the color profile and resolution in the links panel. Like if you are showing the front of a book, but the whole book is in the PDF. Most people will just view the document on screen.
Are you recommending I save each type of file differently for best image quality? Or save them all in. I have been using png for everything. Because 1 person in my field landscape architecture told me so, not an InDesign pro. Julie: PNG is a great bitmapped file format, especially for low-resolution images on the web.
However, if you save an Illustrator vector graphic as png, it turns to pixels, and you lose the sharp-edged paths. All my images from photoshop, imported in InDesign are jagged. I brought al my photoshop and InDesign preferences back to basic, did a new install on my Mac and installed my programs again.. Laris, I suggest you post this on the forums click forums above , where more people will see it.
I had forty images created in Illustrator, and all saved as EPS files. They were crashing it every time. After resaving them all as AI the files exported perfectly. But the masked elements come out blank, but the mask outline is there, when he prints the pdf from his RIP.
I never have these problems when we run separations for film. So this seems unique to digital printing. When we print the same pdf on our inhouse color printer, the masks prints fine.
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