Forget about the DPI and inches. You need to resize the image so that it is no longer than 640 pixels on the longest side. In your favorite editing program (Photoshop, PSP, etc), make sure the constrain proportions box is checked and enter 640 or lower for te longest side.
First thing your going to want to decrease the 2100 pixel length down to 640 (it is the maximum allowed) while keeping the proportion the same. Also, change the resolution down to about 72 dpi, 300 dpi is good for printing, but most monitors only have a max dpi of 72 I believe. If you do this and your pic is below 150kb, you're good to go, if it is above this than you are going to have to either decrease the size of the pic or decrease the image quality until you get under 150 kb
Be sure to keep the original though, hope this helps.
First thing your going to want to decrease the 2100 pixel length down to 640 (it is the maximum allowed) while keeping the proportion the same. Also, change the resolution down to about 72 dpi, 300 dpi is good for printing, but most monitors only have a max dpi of 72 I believe. If you do this and your pic is below 150kb, you're good to go, if it is above this than you are going to have to either decrease the size of the pic or decrease the image quality until you get under 150 kb
Be sure to keep the original though, hope this helps.
You don't need to worry about the dpi setting, unless you are specifying the size in real units of length (cms/ inches etc)
Pixels are pixels are pixels, it doesn't matter how many of them you choose to put into an inch.
Open the image, then go to the word image on the toolbar click it then click on the word resize you will want to go to 30%, it will make it slightly under 640 on the long side but close enough it won't matter.
If you need to crop any do it before you resize then resize your photo accordingly increasing the percentage so it isn't to small in the end.
This is for Photoshop 7 and will probably work for other versions.
step 1 - open file and edit if need to.
step 2 - Under IMAGE select IMAGE SIZE
step 3 - In the Pixel Dimensions make sure you are using Pixels
step 4 - Erase original values then type any number between 1 -640
Both width and height have to be in thoses numbers.
Clicking on " Constrain Proportions" may be an option for you. Try it.
step 5 - Under File - Save As then Type in a new file name.
step 6 - Next box - look at the bottom for size of file. If under 145k you are probably ok.
If file size is over. You will need to change the Quality Value to lesser Value.
step 7 - Click ok and you are done.
Open the image, then go to the word image on the toolbar click it then click on the word resize you will want to go to 30%, it will make it slightly under 640 on the long side but close enough it won't matter.
If you need to crop any do it before you resize then resize your photo accordingly increasing the percentage so it isn't to small in the end.
Huh ? why not just Image->Resize and type in the pixel size that you want for the long side ? What's the point of guessing ?
step 5 - Under File - Save As then Type in a new file name.
step 6 - Next box - look at the bottom for size of file. If under 145k you are probably ok.
If file size is over. You will need to change the Quality Value to lesser Value.
step 7 - Click ok and you are done.
If you use 'File->Save For Web' there is an option to optimise to a particular file size. You can put in 150k there and it'll pick the highest JPEG compression that will fit under that limit automatically.
As Gordon pointed out...use the FIle->Save For Web option. You can putz the size and compression around till you have what you want, and also can see a preview in your browser, BEFORE you have to save it.
Huh ? why not just Image->Resize and type in the pixel size that you want for the long side ? What's the point of guessing ?
Cause it chops the image up in PSP7 when you do it that way...you have to resize percentage first then you can do that other wise it will give you whatever the middle 640x 480 pixels are and crops everything else off.
Huh ? why not just Image->Resize and type in the pixel size that you want for the long side ? What's the point of guessing ?
Cause it chops the image up in PSP7 when you do it that way...you have to resize percentage first then you can do that other wise it will give you whatever the middle 640x 480 pixels are and crops everything else off.
Weird, so the people at jasc.com don't know how PSP works then ? That sounds like you are using crop, instead of resize. The linked tutorial seemed pretty clear on how to do it. Do you have it set to 'smart resize' or something else ?
Huh ? why not just Image->Resize and type in the pixel size that you want for the long side ? What's the point of guessing ?
I will sometimes set Photoshop for a percentage reduction (e.g. 50%), because I think you get a more accurate interpolation if you can avoid "fractional pixels" and thus preserve detail. Most of the time I just set it for the numbers of pixels I want, though.
As Gordon pointed out...use the FIle->Save For Web option. You can putz the size and compression around till you have what you want, and also can see a preview in your browser, BEFORE you have to save it.
But you will lose the EXIF information, saving as a JPEG from File/Save As will keep it.
Huh ? why not just Image->Resize and type in the pixel size that you want for the long side ? What's the point of guessing ?
I will sometimes set Photoshop for a percentage reduction (e.g. 50%), because I think you get a more accurate interpolation if you can avoid "fractional pixels" and thus preserve detail. Most of the time I just set it for the numbers of pixels I want, though.
Have you noticed a difference doing that ? Certainly it might help with nearest neighbour resampling
As Gordon pointed out...use the FIle->Save For Web option. You can putz the size and compression around till you have what you want, and also can see a preview in your browser, BEFORE you have to save it.
But you will lose the EXIF information, saving as a JPEG from File/Save As will keep it.
That's true - you do lose the EXIF - I typically just reapply the data when I care about keeping it.
Huh ? why not just Image->Resize and type in the pixel size that you want for the long side ? What's the point of guessing ?
I will sometimes set Photoshop for a percentage reduction (e.g. 50%), because I think you get a more accurate interpolation if you can avoid "fractional pixels" and thus preserve detail. Most of the time I just set it for the numbers of pixels I want, though.
Have you noticed a difference doing that ? Certainly it might help with nearest neighbour resampling
My eyes aren't good enough to notice a difference! I'm basing it on what seems logical, as described earlier. If 50% (or 25%) gives me 590 pixels instead of the 610 or so I'd normally use I go with the even percentage, especially in a detailed image. This also has the advantage of making the final image slightly smaller than the maximum, letting me save at a higher JPEG quality setting.
Huh ? why not just Image->Resize and type in the pixel size that you want for the long side ? What's the point of guessing ?
Cause it chops the image up in PSP7 when you do it that way...you have to resize percentage first then you can do that other wise it will give you whatever the middle 640x 480 pixels are and crops everything else off.
Weird, so the people at jasc.com don't know how PSP works then ? That sounds like you are using crop, instead of resize. The linked tutorial seemed pretty clear on how to do it. Do you have it set to 'smart resize' or something else ?
I tried it the way it says to do it in that tutorial and it still cropped it down to size...it has to be a tutorial for PSP 8, it can resize so much better than any of the previous PSP...but it is also so much slower than the other PSP versions
"I tried it the way it says to do it in that tutorial and it still cropped it down to size..."
I used to have PSP, I know what you're doing. You are changing the CANVAS size instead of Image RESIZE. Canvas size down to 640 will crop your image. Resize to 640 will actually shrink the whole image and not crop.
I'm having the same problem. I'm totally new and I have a picture I would like to submit. I use PSP7. I resized it so the longest side is 640 pixels. The pixels per inch is set at 72. But the size of the pic is 1meg. How can I get it down to 150kbs without making the photo tiny? Or do I have to shoot it again in a lower resolution (which I can't do because part of my composition died):)
I appreciate any help I can get. I just have a couple days to get this in.
I'm having the same problem. I'm totally new and I have a picture I would like to submit. I use PSP7. I resized it so the longest side is 640 pixels. The pixels per inch is set at 72. But the size of the pic is 1meg. How can I get it down to 150kbs without making the photo tiny? Or do I have to shoot it again in a lower resolution (which I can't do because part of my composition died):)
I appreciate any help I can get. I just have a couple days to get this in.
If the file is 1MB then it doesn't sound like a JPG file. Did you save as a TIFF drawing perhaps? If so use the "Save As" and under File Types choose "JPG" or "JPEG". When you click save a second window will appear to choose compression ratio. The final file (in Windows Explorer) must be 150kb or less - change the compression if you file is still too large.
There is no need to shoot again - you can always resize and change the compression to meet the rules. It really sounds like you image isn't saved as a JPG currently because I've never seen a 640x640 JPG larger than about 300k.
I'm having the same problem. I'm totally new and I have a picture I would like to submit. I use PSP7. I resized it so the longest side is 640 pixels. The pixels per inch is set at 72. But the size of the pic is 1meg. How can I get it down to 150kbs without making the photo tiny? Or do I have to shoot it again in a lower resolution (which I can't do because part of my composition died):)
I appreciate any help I can get. I just have a couple days to get this in.
This is correct! About 1 mb is about right. Now:
1. First, SAVE YOUR FILE (if you haven't already done so) in case you want a nice printable version.
2. Under the FILE menu, select *Save for Web...* You can choose how many versions you want displayed by using the tabs above the image(s). One is enough (and simpler to use), but four, I believe, is usually default.
3. Select the *jpg* option in the upper left button menu of the upper right window.
4. Click on *Optimized"
5. In the little Quality window, adjust the percentages so that the file size is under 150 (just a tip: it really needs to be under 147 or so as PS adds a couple of kb somehow). You can see the file size by looking in the lower left corner of the image.
6. Click on Save, and save and rename your file.
7. When you exit Photoshop, do not save changes. You already have (in step 1 and again in step 5 for the web version)!
Yay! You're done! Soon it will be like riding a bicycle!
(BTW: web browsers and monitors only display 72 dpi, so it is useless to save an image for the web higher than that).
