Photoshop PSB to BMP Converter

PSB (Photoshop Big) is Photoshop's large document format. It works like PSD, with layers and effects, but allows images up to 300,000 pixels wide and files bigger than 2 GB.

You'll find PSB files in panoramas, large-format print, billboard design and high-resolution scans - anything too big for a regular PSD.

Adobe Photoshop opens PSB files. Few other apps do, and their size makes them hard to share, so converting to JPG, PNG or TIFF is the usual way to view or send the final image.

BMP (bitmap) is Microsoft's original Windows image format. It stores pixels with little or no compression, so it's simple and lossless but very large - a 12-megapixel photo can top 35 MB.

BMP is mainly found in older Windows software, some industrial and embedded systems, and scanner output. For almost every other use, PNG gives the same quality at a fraction of the size.

Windows Photos and Paint open BMP files, as does Mac Preview. Most browsers can display them too. Convert to PNG for a lossless copy that's much smaller, or JPG for photos.