How To Resize Image In Photoshop


2- Open your image. Fiverr freelancer will provide Photoshop Editing services and resize image, resizing photo or logo professionally including Source File within 1 day. Resize button in Photo Gallery can be seen in the Edit tab under Properties. If you’ve got a folder full of images that you want to resize, you might be dreading how long it’s going to take to open up each image in Photoshop, resize them, resave them and close them all again. The Quick Selection tool works by selecting large (or small) areas of a similar color. Facebook; Instagram; Twitter; WhatsApp; LinkedIn; Home; Graphics. Resize or Crop an Image In Photoshop. Resize with the Rectangular Marquee Tool Grab the Rectangular Marquee tool (M) and look to the top control bar and choose “Fixed Size” from the drop down menu and set a width and height. how to resize in photoshop for facebook In Photoshop after you have finished editing your image, go to File > Automate > Fit Image. Here are some of the tools you can try out. com you can resize pictures (JPG, GIF and PNG) to any desired size. Saving the Image. You can resize that smaller image back to its original size, but it'll look fuzzier than the original. Locate the image you wish to resize. Configure one tap sharing to multiple destinations and save time. The premium edition costs three times that, but can integrate with Photoshop, Aperture, or Lightroom (as well as being a stand alone product). Fiverr freelancer will provide Photoshop Editing services and do resizing image resize photo cropping image including # of images within 2 days. Posted July 12, 2011 by Chris Luongo in About Chris Luongo. Resize jpg, png or gif pictures and Digital Photos. Another method is using the Image Size dialog box, which you use in many of your editing sessions in Elements. Also understand how resampling affects not only the size of an image onscreen, but also its image quality and its printed output—either its printed dimensions or its image resolution. For example, if you change the resolution of a file, its width and height change accordingly to maintain the same amount of image data. This brief tutorial will guide you in using The Gimp to resize pictures/images. That is, if you have a large collection of raw images, especially. The same technique is also used for earlier versions of Photoshop such as CS4, CS3 etc. How to resize a folder of images and change their DPIs in a repeatable batch process in Photoshop? Is there a way to automate the following In Photoshop 7. How To Resize an Image Without Losing Quality 1. Make sure you Save the changes. Go to Image → Image Size. In Elements, I would select “Use Photo Ratio” from the Aspect Ratio drop down menu in the crop settings. Otherwise high quality images will not have higher size. You can export your files as psd, jpeg or tiff images. Go to Shutterstock Editor and click Get Started. You can create a new Photoshop document that is 1600px wide by 440px tall. At the very bottom of the Window menu is the name of each image that's currently open in Photoshop. Also, bear in mind that, when resizing, your image quality will deteriorate. FastStone Photo Resizer is an image converter and renaming tool that intends to enable users to convert, rename, resize, crop, rotate, change color depth, add text and watermarks to images in a quick and easy batch mode. First of all you need to have a folder containing stock of various photos downloaded from the internet. But that may not give you the best results. Tech support scams are an industry-wide issue where scammers trick you into paying for unnecessary technical support services. Use Photoshop CS3 to Batch Convert Images. For You Explore. Next, open the image you’re going to be working with. Configure one tap sharing to multiple destinations and save time. Choose include all subfolders of the selected folder. Adobe Photoshop is far and away the most popular image processor for designers, so some might prefer the option of using the native tools provided by Photoshop. The plugin bundles below contain tools for a wide range of different uses. Most often, unless you want to create a very large collage, five to seven photos will be enough. Let’s start with the image you want to resize in Photoshop. How To Resize Images In Photoshop Cs4 There are a few different ways to scale or rotate layers in Adobe Photoshop CC. Underneath a hundred and fifty dpi turns into a difficulty to pleasant. Photoshop CS5 & Photoshop CS5 Extended - Best Deals From Adobe Adobe Photoshop CS5 delivers breakthrough capabilities to help you create images with impact. If you’re going to email your photos, post them in forums, or do things like that, you should resize your images so they’re not huge. Go Image>Crop to crop and resize your image. g 3000x2000 pixels; Physical size - e. In order to resize an image with iPhoto, that image will need to be in your iPhoto library. image size in Photoshop in an attempt to come up with a 8x10 print of that same file, it's not going to be the same quality as if you had re-scanned the image and set you output and scale for a 8x10 print. You can use the Crop tool with or without resampling images. There are a number of ways to resize images, but this is the way that I prefer. In this article we'll run through some of the most popular black and white conversion methods, outlining the pros and cons of each. Resizing your JPG image. Resizing without resampling changes the physical size of the image without changing the pixel dimensions in the image; no data is added to or removed from the image. We welcome users of all skill levels and backgrounds. In this video tutorial, I show you how to resize an individual layer. But having said that, I also have to admit: 2. How to Resize an Image in Photoshop. Resize or Scale Image. Begin by opening the image or video that you want to re-size in Sony Vegas and drag it into the time line. You’ll find it in the Window menu, under Extensions. For the purposes of this tutorial, I am just using an image that contains two text layers. How to Resize and Crop images in Photoshop CC – Photoshop Crop Tool Tutorial In this photoshop crop tool tutorial we will learn how to correctly resize and crop photos in Adobe photoshop CC. How To Resize Multiple Images In Photoshop We learned all the steps to resize an image in Photoshop. Posted July 12, 2011 by Chris Luongo in About Chris Luongo. With the help of this script we can easily convert and resize multiple images to smaller sizes. These layers allow the developer to manipulate the picture exactly the way they want. Photoshop CS5 & Photoshop CS5 Extended - Best Deals From Adobe Adobe Photoshop CS5 delivers breakthrough capabilities to help you create images with impact. Resize all. To ensure your image is not over-sharpened you will need to reduce the layer opacity. Facebook; Instagram; Twitter; WhatsApp; LinkedIn; Home; Graphics. Resize Photos Using the Image Size Tool. Or you can access the canvas window by pressing Alt+Ctrl+C. develop module. ) Resize image. FastStone Photo Resizer is an image converter and renaming tool that intends to enable users to convert, rename, resize, crop, rotate, change color depth, add text and watermarks to images in a quick and easy batch mode. Photoshop is a graphics editor by Adobe that lets you create designs and make a variety of changes to photos, including resizing an image. Learn all about resizing images for print with Photoshop! You'll learn how print size works, how (and when) to enlarge your photos, how to resize for different frame sizes, and how to get the highest quality prints every time! Written by Steve Patterson. In photoshop, scaling (resizing) an image to a larger size can result in an undesirable 'pixelated' effect whereas scaling an image to a smaller size can result in an undesirable blurring and loss of line or color detail. The Pixel Dimensions section tells us the width and height of our image in pixels or percent as well as the file size of our image. Tutorial: How to Resize Graphics, Clipart & Images in Photoshop Elements Sometimes it is necessary to enlarge an image but when you scale it up in size in Photoshop, Photoshop Elements, Illustrator, etc. Photoshop cs5. Resize jpg, png or gif pictures and Digital Photos. To accept the straightened image, press Enter. However, if you resize a shot to make it larger, Photoshop Elements has to generate extra pixels and this can result in fuzzy-looking enlargements. Select “Image Size”. Follow the step and create image resize very easily. How to resize an image in Photoshop and keep the best quality. How to resize images using photoshop. Here are some of the tools you can try out. I also wanted to do this without Photoshop or downloading some third party program! I got it to work using Paint, though it’s not the most ideal tool to use for obvious reasons. Resize Image Manually Photoshop Rotating and Resizing Photos In the last chapter, you learned how to get photos into Elements. Resizing an image is one of the most commonly used skills in Photoshop. Resizing an image is one of the most commonly used skills in Photoshop. Jordan explains the simplest way to resize an image in Photoshop CS3. For You Explore. Locate the image you wish to resize. Open it in photoshop and at the bottom left of the window for the image it should show something like, for example 3. Once the Image Size window opens, you can change the width and height of the file. Image editing programs like Adobe Photoshop are ideal when resizing images. However if you make it SMALLER it will Warn you that any pixels greater than the canvas will be cut and removed. Fiverr freelancer will provide Photoshop Editing services and resize image, resizing photo or logo professionally including Source File within 1 day. To see these again is fairly simple - when you first know how to do it. Here, we'll resize the little face that we created in the last lesson. Hence, our clients can easily upload their product for sale on the market due to following these factors. Then click the “Choose” button and select the folder you created called “Original”. If you drag a frame handle, you will notice that it will resize the frame. The best method of resizing and compressing images is by using Photoshop. Too few images will not convey enough feeling. SPECIFIC CROP. Batch resizing multiple images in Photoshop CS5 is a very easy task. Most of the time our images size and their ratio. How to get Photoshop on your university owned computer. Image Type options: The Resize Pro™ plugins work with most common file extensions including 8-bit TIFF and JPEG files. If you have the luxury of using Photoshop, below are instructions on how to resize your photos before emailing or uploading them to the Web:. (You can resize it smaller than 800 pixels, but the Pixeladies like to use 800). Step 2 : To resize, fill in ONLY ONE of the boxes of width, height or percentage with the value you want. Turn on the chain link if you want the width and height to change together. Be sure to enter the SAME. If you have an image that's monstrously large, don't be afraid to resize any image in order to suit your needs. Click File > Open, browse for the image on your computer, and click Open. However, if you're using a service like Facebook or Tumblr, you probably won't need to resize your images because these services resize them automatically. image is – and how much smaller you need to make it (the target size is about 500 pixels wide). A lot times we're bringing in photographs that we've taken with a digital camera and …they're simply too big to display on the web. How to Resize a Window That is Too Big or Off Screen in Mac OS That forced Photoshop (in this case) to move to my bigger screen. Photoshop seems to consistently make my images 30% bigger. Looking to learn a trick or two about resizing a layer in Photoshop? You’ve found the right tutorial. 7/14/2019 · How to Resize an Image in Adobe Photoshop. Turn A Photo Into A Sketch In Photoshop For Making Coloring Books Use Adobe Photoshop to turn a photo into a sketch for a coloring book. - Select the image, in the top toolbar select image trace drop down box. So, type in a "10" for the width. How To Resize An Image It's common for a creative source to be sized incorrectly for your intended application and will require you to resize the image. You may have to register before you can post: click the register link above to proceed. Photoshop Express is brought to you by Adobe, proud makers of the Photoshop. Currently I open the desired JPG in Photoshop, hit CTRL+A, CTRL+C to select and copy the image, then CTRL+V to paste that image into the PSD that I’m building. 2- Open your image. ~Herbert Asquith; Photoshop has a special feature for compressing the file size for quickly ; resize canvas photoshop How to Properly Resize a CSS Sprite Image in ; Photoshop batch job - resizing images. For Print, images should be either 240 or 300 dpi. Image Dimensions When adding images to your site, the dimensions should be the same size that you want them to appear on your page, so you may need to adjust the size or shape of the images. button to finish the JPG image batch resizing. After drawing out the crop area,. To reduce the size of the image, you’ll need to resize it. Big Bundles. Here you can resize your image as well make it bigger or smaller and you can always hit the reset botton to make another adjustment on the size of your image without affecting the pixel of the original image. Do any of the following to modify the image preview: To change the size of the preview window, drag a corner of the Image Size dialog box and resize it. To bring it back, we simply paint white. Use Lunapic. How to Resize and Rotate Layers in Adobe Photoshop Transform Options. Photoshop is a graphics editor by Adobe that lets you create designs and make a variety of changes to photos, including resizing an image. Manually it is possible but it takes too long when it comes to hundreds or thousands of images in a specific size. In this tutorial, the third in my series on. Photoshop Projects for €30 - €250. Both beginners and professionals use the image flip technique in Photoshop to get better results, shift the focus in an image, or create intricate and beautiful patterns. Once the first. Photoshop Crop Tool is another way for resizing your pictures. How do I resize it. Make sure you Save the changes. 4- A way to stop this from happening you can do the following. Tech support scams are an industry-wide issue where scammers trick you into paying for unnecessary technical support services. For example, if you change the resolution of a file, its width and height change accordingly to maintain the same amount of image data. Re: Resizing Images to Canvas in Photoshop JJMack Sep 10, 2019 1:58 PM ( in response to emilyf29178311 ) If you resample image to have a 450px by 580px canvas size from any other canvas size image you will lose image quality but have the image the size you want. How to convert an Image from 72 DPI to 300 DPI and resize? I'm looking to take a ~1500x2200 pixel image at 72 dpi and convert it to a 1. Resizing and creating the most optimum images has a lot of advantages. How To Resize An Image Layer In Photoshop Cs3 Adobe Photoshop CS3 is a powerful graphics editing software program that You can add layers to your image to create. It's a png resizing web accessible for everyone. Most people save their web images a JPEGs, but I personally achieve better results on Facebook by saving my images as PNG files (PNG-24 to be exact). 4) Change the longest side of your photo to 800 pixels. You might do this for a variety of reasons. You might have an image that’s 300 ppi (ideal for print), 240 ppi (some cellphones produce this size), or 72 ppi (screen resolution). To resize an image. How to resize an image in Photoshop Make sure resample is turned on. To crop and resize high-resolution images in Photoshop, please follow the instructions below. Resize your individual images. I have an image (Adobe Photoshop CC 2015) which original size is 500x500px. Choose Auto Resolution to resize the image for a specific printing output. image resize in photoshop document. 2 hours ago · Photoshop is a graphics editor by Adobe that lets you create designs and make a variety of changes to photos, including resizing an image. The Pixel Dimensions section tells us the width and height of our image in pixels or percent as well as the file size of our image. This can be found under “Image” and “Image Size” in Photoshop. You can change the unit of measurement by choosing from the menu to the right of the Screen text box. I normally leave resolution blank but if it's a high res image you may wish to insert 300 (make sure the res is set to ppi - pixels per inch) Now with the crop tool you can click and drag over the area of your image that yopu want to show as 7x5. How To Resize An Image Without Photoshop. » resize the image using image > image size » stop recording » replay the action by clicking play or pressing a hotkey (if you defined one) as many times as you want optionally you can also save and close the file after resizing the image(s), just perform the action after resizing. Image optimisation is when you reduce the file size of your image without losing quality. We know that not everyone will be able to afford Photoshop, and that’s the main reason we’ll be going over how to do all of this using GIMP. So, to refresh our memory, here's what that. The best course of action is to resize an image to fit your desktop. how to resize a pdf image. Even if you don’t have time to learn advanced computer graphics, GIMP can still be a very useful and handy tool for quick image modifications. If 3D Paint is to become the defacto replacement for MS PAINT, then please show me how to resize images to a specific number of pixels, or to a specific % of the original using 3D Paint. At SmallJPG. This way you can avoid the clutter of bitmap files generated by PIL and left behind in your \Local Settings\Temp folder. Click on the glass image and drag it over to the image with the guy fishing. Begin by opening the image or video that you want to re-size in Sony Vegas and drag it into the time line. Resizing an image sounds like one of the simplest things you could do in Photoshop, but there are actually some common mistakes you should avoid. if it is a GIF, change it the image to RGB color mode. jpg), an Image Options dialog box will appear asking you to choose the quality for the image. These online image resizer tools should make it easy to quickly resize images without bloating your PC with Photoshop. Resize the image by going to Edit in the top tool bar, and choosing Free Transform from the menu options. How To Remove Image Backgrounds Without Photoshop July 7, 2016 Posted by Anna Kachur on eCommerce Tools , Selling Tips , last updated on August 22, 2018 Whether you are a web designer, a marketer or a just an owner of a small business you know how it’s like to be dealing with images on a daily basis. Choose the image from its save location and then select Tools from the top menu. Just click on the pixel size in either Heighth, or Width. In either Photoshop or Photoshop Elements open a new document. From the dialog box, select either resize the images already open in photoshop, or select folder where the image files you want to resize are stored. Resize image: Need to resize an image for social media or for printing? Easily shrink, enlarge, or crop your photos online with PicMonkey’s photo resizer! This app works best with JavaScript enabled. Images will be downloaded in a compressed format, so don’t panic when you’re newly purchased image says it’s only 2MB. Now do the Ctrl T which will give you the handles to "pull" the image in. Layers and Transparency. jpg), an Image Options dialog box will appear asking you to choose the quality for the image. With layers, you can edit parts of the image while leaving the rest. You could resize the canvas with the crop tool but then it will fill the new area with the background color or transparency if it's a layer or of course crop the image if you make it smaller. Lately i realized on CC when i increase image size so does my canvas size. Enter new pixel dimensions, document size, or resolution. It's impossible to change the size of a PSD while losing absolutely no definition, but the loss can be minimized by using the right Photoshop settings. You can choose to resize in pixels, inches, or percentage. I also wanted to do this without Photoshop or downloading some third party program! I got it to work using Paint, though it’s not the most ideal tool to use for obvious reasons. Upload a photo from your computer. You see: the logic behind Lightroom makes it not the perfect batch resizing tool. Resize Photos Using the Image Size Tool. Ensure that the "Constrain Proportions" settings is checked "on". I imported an image (bitmap) in photoshop and wanted to resize it, not through the handles, but by giving exact dimensions. However, there is a way to make resizing multiple images in Photoshop really quick and easy, but it takes a bit of work to set up first. Resample an not resample. If you want to see what a web page would look like on a 27″ iMac, a 15″ MacBook PRO and an iPhone, you can use artboards to create design previews of each! Learn how to use artboards to design quickly and efficiently in today’s episode!. You can batch resize any number of photos using the Image Processor found in Photoshop. Open Photoshop, and click "File" and "Open" from the menu bar at the top of the program to open the image you need to fit into your template. This student technical guide is part of the Adobe Visual Design: Foundations of Design and Print Production curriculum, Project 1: Collages and Photography. I'm trying to make a smart object smaller in photoshop, but the problem is that when I do so, the image's edges becomes a bit blurry and even remove a few pixels here and there. You’re done. There are subscription options for Photoshop that cost around $12/mth (look for the Photography subscription). Alot of times you see images that look way to tall and to fat and it makes. Using any of selection tools mark an area to indicate this part of the image should stay non-scaled. Click on the glass image and drag it over to the image with the guy fishing. By resizing, you are changing the image print size, but maintaining the pixel dimensions. If you have images that were uploaded prior to installing Imsanity, you can bulk resize them. Resize Photos Using the Image Size Tool. It's also one of the quickest ways of creating a mask from an image. It is fine I have done it using canvas size option in right below image size, but the problem is the layers I have already made are of same size which I have already drawn. Choose Adjust Size (you can also open this menu by clicking on the square with arrows icon. Go Image>Crop to crop and resize your image. The image we’ll be adding to the other needs to have the same angle and texture of the other one. You can then select the size of the image from a list or enter your own custom size. Resizing an image sounds like one of the simplest things you could do in Photoshop, but there are actually some common mistakes you should avoid. I am willing to re-size a large batch of images in order to upload them online. Your aim is to tell a story with your photos that you could not tell with just a single image. open the first image to be resized. All the examples with use images stored on s3, but all the examples will work with any image stored on any internet-accessible storage. Flipping an image is essentially mirroring it. So pay attention if you are new to Photoshop and learn to resize an image. Once you've erased the excess, you will have a better idea of what size your added-in person needs to be. Upload a photo from your computer. Alot of times you see images that look way to tall and to fat and it makes. How to Crop and Resize an Image in Adobe Photoshop. We make it easy to resize photos without installing any software. This wikiHow teaches you how to open an image and place an image in Photoshop. RESIZING PHOTOS AND IMAGES IN PHOTOSCAPE. To change the locked proportions, simply. How to resize image in photoshop? I'm using photoshop 7. Learn all about resizing images for print with Photoshop! You'll learn how print size works, how (and when) to enlarge your photos, how to resize for different frame sizes, and how to get the highest quality prints every time! Written by Steve Patterson. In this screen you will be able to fill in the new size in pixels. And now look at this image – where I resized the image to make it larger. The first thing to notice is the pull-down menus. We make it easy to resize photos without installing any software. If your file consists just of the image you have to unlock the background layer before you can start anything. In case you do not own any of those programs, Pic Resize is a free and simple online tool for cropping, resizing and adding special effects to any of your images. Set "Process Files From" to Folder. It is fine I have done it using canvas size option in right below image size, but the problem is the layers I have already made are of same size which I have already drawn. You can also drag the corners of the image to resize it. Make sure you Save the changes. In this quick tutorial, I will show you the proper way to resize images in Photoshop. Open the menu at the bottom of the Image Resize window. Whether you want to increase or decrease the size of an image, Photoshop makes it incredibly easy to resize a photo. In this image downloaded from the camera the actual image size if print-ed as is, would be 42. Just COMMAND/CONTROL A around your first photo (this puts the marching ants around the edge of the photo) and CONTROL C to copy the photo. In the image size area, select Resize Images as that’s what we came here to do. go through the 50% size reductions you need until you reach the final size. Choose Image > Image Size. You may have to register before you can post: click the register link above to proceed. To resize the image to match the size of another image, go up to the Window menu in the Menu Bar. Then click on the “Open” button in the lower right corner of the window. This tutorial is based off helpful tips from TutorVidCom. Underneath a hundred and fifty dpi turns into a difficulty to pleasant. This will open the image in Paint. com to resize or scale an image instantly. Open Photoshop, and click "File" and "Open" from the menu bar at the top of the program to open the image you need to fit into your template. Do any of the following to modify the image preview: To change the size of the preview window, drag a corner of the Image Size dialog box and resize it. Adobe Photoshop CS5 redefines digital image editing thanks to a large number of new The Mini Bridge included in this. Click on Image in the top bar menu. image is – and how much smaller you need to make it (the target size is about 500 pixels wide). Most of the time our images size and their ratio. I’ll recommend you to go for resizer tools that come with bulk image processing as they will immensely speed up the resize process if you have multiple images. Jump down to the image size section of the Process Multiple Files dialog box Optional. Welcome to free png resizer online tool. The middle image is the way to get all of the image in the picture, You resize the width to 10 inches and print it with white space on one side or the other or both (shown in grey). You can see this below. Drag all these images into Photoshop. Open your logo image in Photoshop and copy it across to the photo you want to watermark. Resize Image Manually Photoshop Rotating and Resizing Photos In the last chapter, you learned how to get photos into Elements. " In the resulting dialog box, check the "Constrain Proportions" and "Resample Image" boxes. Make sure the the measuring unit is set to Pixels and change the amount of pixels. When you want to REDUCE the image size, click on Resample Image check box to make sure it is selected and choose Bicubic Sharper from the drop down menu. When you open an image in Photoshop, the photo becomes the background layer of your canvas. In Adobe Photoshop, the Transform tools offer some of the most basic, fundamental ways to modify your images. How to Photoshop People Into Pictures. Also, avoid just resizing in Photoshop and then let the export tool do the rest if you want the best results. Adobe Photoshop PSD images, like other bitmap images, lose sharpness when they're resized. When you’re done, click Ok to configure the changes for your image. Here’s where the resolution of the image comes into play. You’ll find it in the Window menu, under Extensions. Go to Shutterstock Editor and click Get Started. In this quick tutorial, I will show you the proper way to resize images in Photoshop. This is the official website of the GNU Image Manipulation Program (GIMP). ) Open your file in Photoshop. However if you make it SMALLER it will Warn you that any pixels greater than the canvas will be cut and removed. Lightroom still can do the job of “batch resizing” 2. 1) Open the image you want to work on in Photoshop. When you release your cursor, Photoshop will make that line the new horizon. This will open the image in Paint. You’ll find it in the Window menu, under Extensions. It is free software, you can change its source code and distribute your changes. While viewing one of the images, go to “Image” >> “Image Size”. Choose Image > Image Size. Photoshop Image Resize without Losing Quality Learn how to scale and resize images without losing quality in Photoshop using Smart Objects! Get the complete PDF of this tutorial on my website. If you have ever tried to resize a digital image, you might have noticed that they image with Photoshop (Paid/Free Trial), 3. By Tech Tips How To. Resize or Crop an Image In Photoshop. When using Adobe Photoshop being able to crop and resize an image is essential. Here we can see the Photoshop Image Size dialog with three numbered areas. First, open the photo you'd like to resize, and then open your ideal-size-and-resolution photo. Easily how to trim a part in an image - Photoshop 7. Here I will guide you through all the online and offline software /applications and will guide you through the complete process of how to resize the images without Photoshop. Drag and Drop mouse operation is well supported. Resizing an image is one of the most commonly used skills in all of Photoshop. You can simply resize images using an image editing software on your computer. How to Resize an Image in Microsoft Paint. Getting the Perfect Image Size. SPECIFIC CROP. Once you have Photoshop opened, click on File > Scripts > Image Processor… In the Image Processor window, select the folder your images are in by clicking Select Folder…. By tuning not complex settings, you can change the dimensions of the images or specify the angle of rotation. You need the resolution of your image to match the document we’re going to put it in (the 4 x 6). This is the easy and particular way to change image size in Photoshop. And your Action to “Resize 150 W” this sets the Action you created earlier. Resizing an Image using GIMP. Open a photo in Photoshop if you don’t already have one there. Depending upon how your document is constructed, you can use the Crop tool if you want the entire document to be resized. Another is a popular premium plugin designed for Photoshop called ON1 Resize 10. Im creating an app and have to resize a single image to fit for android, iphone,ipad,ipad 2all different dimensions. Photoshop is very good at converting up but less good converting down unless you have dpi to spare.