how to save a png as a smaller file but the same resolution?

Posted by Radek on Pro Webmasters See other posts from Pro Webmasters or by Radek
Published on 2011-01-03T10:01:55Z Indexed on 2011/01/03 10:59 UTC
Read the original article Hit count: 312

Filed under:

image

|

png

|

resolution

not sure what stackexchange site is the best for this question.

I have a scanned jpg file with below properties and size 8.5MB

pixel dimension: 2468 × 3484 pixels
print size: 208.96 × 294.98 millimeters
resolution: 300 × 300 ppi

I need to save the file as png while the size cannot be bigger than 4MB. The most important is that the size of picture must remain the same. I mean that the object size in the picture must stay the same.

Could anybody tell me what is used to define the size of the objects in the picture?

© Pro Webmasters or respective owner

Related posts about image

Image anotation (Highlighting parts of an image, Scrubbing an image) using Javascript

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, We are working on an application and would like users to annotate an image. By annotation I mean, the ability to highlight parts of an image. Once the image is highlighted, and submit is clicked, the highlighted attributes (color, area highlighted) are submitted to the server to be stored in… >>> More
How I can add JScroll bar to NavigableImagePanel which is an Image panel with an small navigation vi

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I have the following NavigableImagePanel, it is under BSD license and I found it in the web. What I want to do with this panel is as follow: I want to add a JScrollPane to it in order to show images in their full size and let the users to re-center the image using the small navigation panel… >>> More
Twitter Bootstrap styling conflicts with plug-ins like jqGrid and other third part libraries

as seen on Geeks with Blogs - Search for 'Geeks with Blogs'
Issues:The concern is that the Twitter Bootstrap framework is that some of their css selectors are simply too generic and have incompatibility issues and conflicts with most third party plug-ins and css libraries, like jQuery-UI and jqGrid.My most pressing concern is only with the generic selector… >>> More
PHP invalid image's and error handling

as seen on Stack Overflow - Search for 'Stack Overflow'
Using PHP's Image and GD functions you can use the following method to finally output the php image imagepng($image); Sometimes, for whatever reason the image may not be displayed typically the error is not with the image but with the actual php functions not executing successfully. However this… >>> More
apt-get install was interrupted

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I am new to Ubuntu. I got the following lines after an interrupted apt-get install. Running depmod. update-initramfs: deferring update (hook will be called later) Examining /etc/kernel/postinst.d. run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 3.13.0-29-generic /boot/vmlinuz-3.13.0-29-generic run-parts:… >>> More

Related posts about png

Bulk convert PNG-24 to PNG-8 files with best quality

as seen on Super User - Search for 'Super User'
Hi, Can anybody recommend a good method of bulk converting a large amount of PNG-24 files to PNG-8 with as little loss of quality as possible and maintaining transparency? I've tried ImageMagick but the resulting images weren't quite as crisp quality as I'd like. Using Paint.NET I was able to achieve… >>> More
Azure Mobile Services: what files does it consist of?

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Azure Mobile Services is a platform that provides a small set of functionality consisting of authentication, custom data tables, custom API’s, scheduling scripts and push notifications to be used as the back-end of a mobile application or if you want, any application or web site. As described in my… >>> More
how to rename files with count

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
i have a directory like this: randomized_quad015.png randomized_quad030.png randomized_quad045.png randomized_quad060.png randomized_quad075.png randomized_quad090.png randomized_quad1005.png randomized_quad1020.png randomized_quad1035.png randomized_quad1050.png randomized_quad105.png randomized_quad1065… >>> More
How can I center XHTML content with CSS?

as seen on Stack Overflow - Search for 'Stack Overflow'
so I recently converted a website of mine from a table content format to a div content format. Table format Version: Table version of the website: here. Table version style CSS: body { width: 1020px; margin: 0 auto; background-image: url(images/bg.png); } .logo{ width:301px; … >>> More
Images in the project NOT adding to array - don't know why.

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi there, I have to sets of images. Each set has 16 images. One set is called 0.png through to 15.png the other is a0.png through to a15.png. In my app, it loads each one dependent on a variable (which by logging, I have proved it works) here is the code [MemoryManager sharedMemoryManager]; NSLog(@"THEME:… >>> More