How to Resize JPG Pictures
The JPG format is a common file format used for digital camera photos and pictures on the Internet. A photo directly from a digital camera is often too big to share effectively on the Internet as it might look too big when viewed in a web browser or its file size makes it inconvenient to send over email. You can shrink both the image and the file size by making the image smaller using image editing software, such as GIMP, Irfanview, Adobe Photoshop or ArcSoft Photostudio.
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Instructions
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GIMP
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Open the picture file. Click "File" and then "Open." Select your picture and click "Okay." Your picture appears in a new window.
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Click on "Image" and then "Scale Image" on the picture's window.
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Specify the width and height that you would like the picture to be. You have a choice of doing this in pixels or percent. Percent refers to percent of the current picture size--for example, specifying 50% would make the picture half its original size. Click on the chain icon if you want GIMP to automatically scale the width while you specify height (or vice versa). Otherwise, you might get a stretched picture. Click "Scale" when you are finished.
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Save the resized picture. Click "File" on the picture's window, then "Save." Click "Save As" to choose a new filename if you would like to keep a copy in the original size.
Irfanview
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Open the picture file. Click "File" and then "Open." Select your picture and click "Open." Your picture appears in a new window.
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Click on "Image" and then "Resize/Resample."
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Specify the width and height that you would like the picture to be. You have a choice of pixels, centimeters or inches. You can also use percentage of original picture size--specifying "50%" for example would make the picture half its original size. Click on "Preserve aspect ratio" if you want Irfanview to automatically scale the width while you specify height (or vice versa). Click "OK" when you are finished.
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Save the resized picture. Click on "File" then "Save." Click "Save As" to choose a new filename if you would like to keep a copy in the original size.
Adobe Photoshop
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Open the picture file. Click "File" and then "Open." Select your picture and click "Open." Your picture appears in a new window.
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Click on "Image" and then "Image Size."
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Specify the width and height that you would like the picture to be. You have a choice of doing this in pixels or percent. Percent refers to percent of the current picture size--for example, specifying 50% would make the picture half its original size. Make sure "Constrain Proportions" is checked if you want Photoshop to automatically scale the width while you specify height (or vice versa). Click "OK" when you are finished.
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Save the resized picture. Click on "File" then "Save." Click "Save As" to choose a new filename if you would like to keep a copy in the original size.
ArcSoft Photostudio
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Open the picture file. Click "File" and then "Open." Select your picture and click "Open." Your picture should appear in a new window.
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Click on "Edit" and then "Image Size."
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Specify the width and height that you would like the picture to be. You have a choice of doing this in pixels or percent. Percent refers to percent of the current picture size--for example, specifying 50% would make the picture half its original size. Click on "Keep Aspect Ratio" if you want Photostudio to automatically scale the width while you specify height (or vice versa). Click "OK" when you are finished.
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Save the resized picture. Click on "File" then "Save." Click "Save As" to choose a new filename if you would like to keep a copy in the original size.
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Tips & Warnings
You can also take a small JPG picture and make it larger, but you lose picture quality as a result. The larger you make it, the more blocky it becomes.
References
Resources
- Photo Credit happy star 7 image by chrisharvey from Fotolia.com
