Convert graphics to PNG on Mac with Preview

PhilipCC

This is not exactly a tutorial but I thought I should post it where most members may see it.

(If a moderator thinks there is a more appropriate category, please move it there.)

In several threads, and at the Meetups, it has been confirmed that 24 bit and 32 bit PNGs are the required file format henceforth.

Most of you Mac users are familiar with the app Preview that came with your Mac.

However, you may not be aware that Preview can open and manipulate 28 file formats, many of which can be converted to PNGs. When you choose Export hold down the Option key and all the file format options will be revealed. If the original is a vector-based logo or illustration the vectors will be retained, so you can resize the graphic without loss of quality. (Of course bitmaps and JPEGs will remain as such.)

The file formats Preview can open and manipulate are:

AI – Adobe Illustrator Artwork files

BMP – Windows Bitmap files

DNG – Digital Negative files

DAE – Collada 3D files

EPS – Encapsulated PostScript files

FAX – faxes

FPX – FlashPix files

GIF – Graphics Interchange Format files

HDR – High Dynamic Range Image files

ICNS – Apple Icon Image files

ICO – Windows icon files

JPEG 2000 – JPEG 2000 files

JPEG – Joint Photographic Experts Group files

OpenEXR – OpenEXR files

PS – Adobe PostScript files

PSD – Adobe Photoshop files

PICT – QuickDraw image files

PDF – Portable Document Format files

PNG – Portable Network Graphics files

PNTG – MacPaint Bitmap Graphic files

QTIF – QuickTime image files

RAD – Radiance Scene Description files

RAW – Raw image files

SGI – Silicon Graphics Image files

TGA – TARGA image files

TIF, TIFF – Tagged Image File Format files

XBM – X BitMap files

PPT – PowerPoint files

Source: Australian MacWorld
http://www.macworld.com.au

There is a slew of other useful tips about Preview.

Search for the two extensive articles titled: The many superpowers of Apple’s Preview app: Part 1 & 2

BBEnk

It's also a quick way to remove the Alpha.