Jpeg In Signature For Outlook Mac Is Blurry


A common issue that email users encounter when creating an email signature is to find it went through completely blurry or pixelated after hitting Send.

For those of you more familiar with digital image formats, the issue itself is fairly straightforward: the image needs to be created at a 96dpi, or else Outlook will reconvert it to match that setting.

I’ll be Blurry!

But for readers who don’t know what this means: when image files are generated, say a JPEG file, one piece of information that is hardcoded is the Dots-Per-Inch ratio (DPI) at which the image should be printed.

I recently started using a signature in my emails but it looks pretty pixelated for some reason:/ My signature. I googled around and it says not to make signatures larger than 120px (height), I created this in Photoshop but don't know how to make it not pixelly and fit in with my emails. Doing so will change the fundamental way that Outlook treats the graphics in your signature, and may result in a poor display of images (blurry and maybe also enlarged). If you need to make changes to your signature, do so using the data entry form set up for your email signature program and then reinstall your signature from scratch.

Yup, that’s how it goes, it’s a parameter meant for print, and that does not make sense to be used in a digital context; but it is. Many (if not most) applications ignore this information to display your image (as they should) and display it using the provided width and height attributes, but others, such as Outlook, do take it under consideration.

  • It seems no matter what file type I try even bmp and all the 96dpi formulatic solution I try to affix on my logo for email signatures in Outlook; whether I insert the logo as Link to file or upload from local, I can view the image fine CRISP and clean but once Outlook grabs it and somehow 'transcodes' it into a native JPG, my logo becomes blurry and crappy/ degraded/ crunched looking.
  • Design the wrong email signature image size. In this case, size matters! The picture shouldn't be too small or too large. In other words, the email signature image size should be IDEAL for attracting every potential buyer. All email signatures will be converted to HTML, therefore you must use only 'web-safe' fonts in the design.

So Outlook will read your file and if its resolution is set to anything but 96dpi it will immediately convert it before sending the e-mail. The conversion process results in visible loss of quality, partly because that happens every time you process a lossy file format (as a JPEG) but also because Outlook does this with in a very generic and unoptimised fashion.

Free Tools

Jpeg In Signature For Outlook Mac Is Blurry

Jpeg In Signature For Outlook Mac Is Blurry Desktop

There are no builtin ways in Windows to save an image with a specified DPI setting, but there are plenty of free tools that help you this:

Paint.NET – download

Image > Resize > (Pixel Size) Resolution:

Set the dropdown to “pixels/inch” and type in 96,00


Jpeg In Signature For Outlook Mac Is Blurry Vision

IrfanView – download Anghami download app for pc.

Open an image, click the “i” icon on the toolbar, change the DPI and save the image.

On software such as Photoshop, you can set this parameter in many ways, but most the simplest way it to do it when exporting for Web.