Each browser does sizing according to it's own rules, but specifying only width generally throws it into aspect-ratio match mode which will be approximate.
Further complicating things is that height and width are interpreted as "CSS Pixels" which are not always exactly screen pixels (depending on CSS and accessibility settings, particularly the display DPI settings).
Try specifying both width and height to get a proper clipping box and see if that works or if you see the same 1.4:1 ratio on both height and width (which would indicate an accessibility ratio setting on the device or O/S side).
You might also wish to (temporarily) set the CSS width and height properties and overflow mode as follows to see if the image really is outside what the browser *thinks* is the correct size : style="width: 270; height: NNN; overflow: hidden" (replace NNN with the correct height, of course).
If the image isn't clipped but is still 380px wide with the style set, then it's almost certain the device has accessibility or other settings to map multiple device pixels to one "CSS Pixel".
If your target environment fully supports CSS3, you might try using the resolution style (style="width: 270; resolution: 1dppx !important") to explicitly request a 1:1 pixel ratio for that element (browsers get final say and may ignore resolution in favor of accessibility).
On 03/27/2015 05:46 PM,
joe@actionline.com wrote:
> When I use <img src=image.jpg width=270>
> and then view/screen capture the result,
> the actual width is 380 pixels. Why is that?
>
> How can I specify the desired size and get
> what I specify?
>
>
>
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(text/plain)
.%0A>%20Try%20specifying%20both%20width%20and%20height%20to%20get%20a%20proper%20clipping%20box%20and%20see%20if%20that%20works%20or%20if%20you%20see%20the%20same%201.4:1%20ratio%20on%20both%20height%20and%20width%20(which%20would%20indicate%20an%20accessibility%20ratio%20setting%20on%20the%20device%20or%20O/S%20side).%0A>%20You%20might%20also%20wish%20to%20(temporarily)%20set%20the%20CSS%20width%20and%20height%20properties%20and%20overflow%20mode%20as%20follows%20to%20see%20if%20the%20image%20really%20is%20outside%20what%20the%20browser%20*thinks*%20is%20the%20correct%20size%20:%20style=%22width:%20270;%20height:%20NNN;%20overflow:%20hidden%22%20%20(replace%20NNN%20with%20the%20correct%20height,%20of%20course).%0A>%20If%20the%20image%20isn't%20clipped%20but%20is%20still%20380px%20wide%20with%20the%20style%20set,%20then%20it's%20almost%20certain%20the%20device%20has%20accessibility%20or%20other%20settings%20to%20map%20multiple%20device%20pixels%20to%20one%20%22CSS%20Pixel%22.%0A>%20%0A>%20If%20your%20target%20environment%20fully%20supports%20CSS3,%20you%20might%20try%20using%20the%20resolution%20style%20(style=%22width:%20270;%20resolution:%201dppx%20!important%22)%20to%20explicitly%20request%20a%201:1%20pixel%20ratio%20for%20that%20element%20(browsers%20get%20final%20say%20and%20may%20ignore%20resolution%20in%20favor%20of%20accessibility).%0A>%20%0A>%20On%2003/27/2015%2005:46%20PM,%20joe@actionline.com%20wrote:%0A>%20>%20When%20I%20use%20<img%20src=image.jpg%20width=270>%0A>%20>%20and%20then%20view/screen%20capture%20the%20result,%0A>%20>%20the%20actual%20width%20is%20380%20pixels.%20%20Why%20is%20that?%0A>%20>%20%0A>%20>%20How%20can%20I%20specify%20the%20desired%20size%20and%20get%0A>%20>%20what%20I%20specify?%0A>%20>%20%0A>%20>%20%0A>%20>%20%0A>%20>%20---------------------------------------------------%0A>%20>%20PLUG-discuss%20mailing%20list%20-%20PLUG-discuss@lists.phxlinux.org%0A>%20>%20To%20subscribe,%20unsubscribe,%20or%20to%20change%20your%20mail%20settings:%0A>%20>%20http://lists.phxlinux.org/mailman/listinfo/plug-discuss%0A>%20>%20%0A>%20%0A>%20---------------------------------------------------%0A>%20PLUG-discuss%20mailing%20list%20-%20PLUG-discuss@lists.phxlinux.org%0A>%20To%20subscribe,%20unsubscribe,%20or%20to%20change%20your%20mail%20settings:%0A>%20http://lists.phxlinux.org/mailman/listinfo/plug-discuss "Reply to this message")