Dana Ross

This plugin displays a message at the top of the screen for visitors running outdated versions of the most popular browsers:
<ul>
<li>Internet Explorer 6 SP2 or less</li>
<li>FireFox 2 or less</li>
<li>Safari 2 or less</li>
</ul>
It is designed to be unobtrusive. The message disappears after a few seconds, and it only displays the first time the visitor comes to your WordPress blog/site.
The warning reads: It appears that you are using an outdated version of your browser. Please upgrade your browser for better sercurity and an improved experience.
The message also includes a link where the newest version of the browser can be downloaded.

Dave’s Outdated Browser Warning

llvasconcellos

*** ATENTION ***
Due to modifications on the Media Library the plugin only works with the “UPLOAD NEW MEDIA” form located under Media -> Add New menu entry on the left menu. If you click direct on Media and use the Add New button of MEDIA LIBRARY the plugin will not be executed.
I filled a bug report here: 
https://core.trac.wordpress.org/ticket/39492
With this plugin you can use High Resolution images directly from your camera to WordPress without using any additional software to resize them. You only have to use a HTML5 capable browser.
<ul>
<li>Works with Drag & Drop!</li>
</ul>
Exemple of capable browsers are: Chrome, Firefox, Opera, IOS e Android.
It will add extra media settings at SETTINGS -> MEDIA where you can specify resized JPG quality and maximum width and height for each uploaded image.
Brought to you by DevHouse – Internet Software Development House: http://www.devhouse.com.br
Com este plugin você pode usar diretamente as imagens em alta resolução diretamente da sua câmera digital diretamente para o WordPress sem a necessidade de passar por softwares adicionais para redimensioná-las. Basta ter um browser atualizado.
<ul>
<li>Funciona com Drag & Drop!</li>
</ul>
Exemplos de Browsers são: Chrome, Firefox, Opera, IOS e Android.
Ele adicionará configurações adicionais em CONFIGURAÇÕES -> MÍDIA onde você pode especificar a qualidade do JPG redimensionado e largura e altura máximas para cada imagem enviada.
Trazido para você por DevHouse – Internet Software Development House: http://www.devhouse.com.br

Client Side Image Resize

Uses HTML5 to resize large images before uploading to server.

Dave’s Outdated Browser Warning vs Client Side Image Resize