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|Re: how do i resize my pictures size 600x447 to a 680x427? there is a way i can resize a lot of pics at the same time||scouttle||10/10/09 7:31 PM|
Just a quick note first: When you resize a picture to be larger than its original size, the quality of the picture suffers... it's like enlarging a photo in a photocopier. So, going from 600 to 680 may result in a grainy or otherwise messed-up image. Picas has three ways to resize photos, all of which seem to be quite easy: see  for documentation. When resizing photos, you want to maintain the same aspect ratio (otherwise they could look stretched or squished, like a funhouse mirror; see  for more info). Now, if you want to change the aspect ratio, what you're actually looking to do is crop them. Cropping is one of the "basic fixes" that Picasa supports; for documentation on how to do it, see . It looks like any of the three methods for resizing described in  will work on groups of photos all at once. However, cropping photos is not the sort of thing that can really be done as a batch, because the content of the photo will affect how it would be best cropped. But, it looks like the documentation for cropping at  is quite good, so check it out if that's what you're looking for.
|Re: how do i resize my pictures size 600x447 to a 680x427? there is a way i can resize a lot of pics at the same time||RinusA||10/31/09 8:25 PM|
The references above are not very usefull and the question is strange too.
Apart from the practical solution, the basic question is: why should this be done for a bunch of pictures.
The size of a picture on a website or in a document is purely relative, so a picture with 600x447 pixels can be shown over a wide range of sizes - on paper till about 10 cm (4 inches) wide (at larger sizes the printresolution becomes to low).
So normally there is no reason to resize the number of pixels at all.
But if Ladocx insists, the next problem is that you can enlarge from 600 to 680 with some suitable program (not Picasa), but then the height goes from 447 to about 507 pixels and then that height must be cropped down or compressed (that is not clear in the question) to 427 pixels.
If heightcompression is allowed (which is strange) you can do this job perfectly in batch with IrfanView (or XnView), but you have to study the helpinformation how to do that - it is not difficult, but you have to take the right steps in the rights order.
If heightcompression is not allowed (which is normal), you have first to resize to 680x507 and then crop down to 680x427.
Please reply if this is feasible for you.
|Re: how do i resize my pictures size 600x447 to a 680x427? there is a way i can resize a lot of pics at the same time||Tisha401||12/8/09 9:09 PM|
The problem still persists that their is no resizing for any amount of pics, in Picasa, I have had to download another program, just so that I could enlarge a picture. A lot of picture editing programs do allow for this, letting you keep the aspect ratio etc., Most people realize that if you enlarge you loose some definition, but with a lot of digital camera's now touting over 5 mega pixels, it should not be a big deal, if you wish to make a picture larger that should be your perogative, and Picasa by not offering this function is causing people like myself to download and use other photo editing software. I am not really interested in flouting my pictures all over the web, so do not need to crop very often or compress, but I do like to have pictures of my grandchildren re-sized to fit in normal picture frames. Call me old fashioned.
|RinusA||12/8/09 10:39 PM|
You have the export button below, and there you can resize to whatever smaller value. For a digital photoframe a width of 1024 pixels is appropriate, but you can also use the original pictures, because the frame will automatically scale down.
But in fact you don't understand the principles of digital pictures: you never need to enlarge (to get more pixels then the original).
For webalbums or normal 4x6 inch prints or such a photoframe, pictures with 1600x1200 pixels are already good enough.
But you can need the original pictures stored on your hard disc sometimes eg for making a print in 8x10 inch size.
Cropping (after straightening) is a very normal correction for almost all pictures, because most pictures contain too much rubbish along the edges and loosing some 10-20% of the available pixels is not dramatic at all.
So, I simply don't think you need any other program than Picasa - unless for totally different things than resizing.
|Ashwin Jayaprakash||1/2/10 11:02 AM|
The best - http://www.irfanview.com/ and free!
|RinusA||1/4/10 9:10 PM|
Yes Ashwin, Irfanview is fine (XnView is much alike - I use both for many years now), but most people don't need any additional program because they can do it in Picasa as I described. You can even type in an arbitrary pixelvalue as long as it is smaller than the width (or height) of the original.
|rduross||1/14/10 6:54 PM|
I think the original poster may have some concepts mixed up, but I was particularly interested in hearing the answer. What I need to do is crop and resize in bulk. The reason is that I have a picture frame with resolution 800x480. I would like to take a set of pictures and get them to that exact resolution to a) match the aspect ratio of the frame so that all the pictures fill the frame -- no black bars, it just looks nicer, and b) reduce them in size to that exact resolution from their ginormous 5 megapixel size just to save space.
Of course I'm not doing this to originals, just copies specifically for this frame. I may want to then repeat it to match the resolution of my phone, or whatever else. This kind of functionality in bulk would be immensely useful.
It seems as though Picasa doesn't do it. Does Irfanview? Something else?
|RinusA||1/15/10 1:10 AM|
You don't understand the principles of digital imaging and the photoframemakers either: your frame should have at least 800x600 pixels which is the normal aspect ratio (4:3) for the pictures out of your camera, but even better: they should be square (like 800x800) to make no difference for landscape or portrait pictures.
If you have an original landscapestyle picture with 2400x1800 pixels (4:3 again), it will automatically resized by the internal processor of the frame to an image of 640x480 on your frame, leaving black borders left and right (not disturbing - that's also the case on your laptop screen).
And if you an original portraitstyle picture with 1800x2400 pixels (3:4 again), it will be automatically resized to 360x480, so a much smaller image with broad black borders left & right - just because the frame is not square as it should be.
It is forbidden to stretch the images to fill the frame, because that cause ugly image distorsions and the only thing you can do very in Picasa is summe-up below:
1: Just select a series of landscape-type images only: they should have the normal pixelsizes.
2: Crop that images individually to a ratio of 800:480=5:3 which is in the selection list. You must crop individually because you must carefully select the part of each image which you can discard.
3. If ready with the cropping, select all and choose Export with a setting to 800 pixels.
4: If the windows with the exported folder opens, you can immediately copy that folder to an sd-card or stick for the frame.
If you insist to include portraitstyle images, you must accept that you have to turn your frame right-up regurarly if that is possible.
1. Just select a series of portraitstyp images only and turn them all to the left.
2. Then do the cropping and exporting and copying to the card or stick as above in the same folder.
In that way you have made correct images that always fill the frame fully. There is no other way and it is less work then described here.
You dont need to work with copies in Picasa, because you can undo the croppings in batch (supposing you did not do any other corrections).
But again just exporting the bulk with 800 pixels will do this much faster and you will be confident also - because most frames are very poor.
Normally you should enjoy your pictures on a 19-inch 1280x1024 display connected to your computer or on your HD-TV set.
|rduross||1/15/10 5:52 AM|
Rinilog, I certainly appreciate your efforts to help and obvious knowledge. Somehow I haven't been clear in what I want or you have a kind of purist objection to what I'm doing. I have discovered Irfanview does very well what I need. And here is what I'm doing for anyone's benefit.
My camera takes images at 4:3 ratio. My photo frame does NOT display 4:3, it is 5:3 (this is bizzarre I concede, the frame specs say 16:9 but it's clearly inaccurate). More specifically it is 800x480. My personal preference is to not have black bars on my pictures on the frame. Therefore I want copies of my original photos that are 16:9 -- 800x480. And perhaps most importantly, I need to do this in bulk -- I don't have the kind of time to spend to individually crop hundreds of pictures.
So, what I do in Irfanview (or this part can also be done in Picasa) is first do a bulk resize setting the longer dimension to 800 pixels (which for any 4:3 photo results in an 800x600 image). Then, in Irfanview (Picasa will NOT do this part) I do a bulk crop to force an 800x480 image. The long dimension holds at 800. The other dimension must go from 600 to 480, meaning 120 pixel-rows must be cropped. Irfanview logically does this by taking 60 pixel-rows off the top and bottom of the image. And that's it, I now have images the fit my frame completely, with as small file size as possible.
So the concession is that I blindly crop away strips at the top and bottom that may have content I want -- but that's ok, it's just a set of copies for the frame. And for the most part, assuming I take pictures with the focal point right in the middle, it works out just fine.
|RinusA||1/15/10 7:50 AM|
If you did already know what to do with IrfanView, why did you ask then? IrfanView (or XnView) is perfect for such batchoperations.
However - it is basically incorrect to crop automatically (unseen) unless your pictures are so inaccurate that nothing bothers. That's not a matter of being a purist, but preferring quality above quantity (as should be normal in photography). But your luck probably is that uncorrected images straight from your camera are often fairly inaccurate at the borders, so with a more precise visual and timeconsuming 5:3 cropping you would not gain very much.
Anyhow, thanks for your very clear workaround which maybe of interest of others owners of such stupidly designed frames.
|jmingels||6/10/10 11:17 PM|
I was hoping to find help within the answers to this question. I had Shutterfly Studio which had the option to resize pictures that I used frequently but I lost it when a hard drive failed and they no longer support it. I've no idea what rduross and rinilog are talking about, but it seems to have ended in a silly back and forth duel.
|RinusA||6/11/10 2:18 AM|
No, you find all the information you need in this discussion.
It is just a matter of choicing a program that fullfills your needs, and if they restricted only to resize in batch, I should advice XnView which is also available in a version for the Mac.
Picasa is more for managing your total collection, but the exporting button is perfectly suitable for a batch-task also. But that does not replace the originals, it just makes new jpeg-files of the required size in a new folder.