Download IrfanView (if you already don’t have it installed, it is an awesome image viewer, and great for basic editing with its Paint plugin, installed by default)
After opening the main viewer window, go to File>Batch Conversion/Rename
What opens is a window crammed with options and tools, with which you can:
Convert between different formats (Jpeg, Gif, PNG, BMP, TIFF, whatever)
Rename with serial progressions
Crop at given dimensions (this and the following are accessible pressing the Advanced button)
Resize to given dimensions, or proportionally inside a maximum dimensions rectangle
Change color depth
Flip horizontally and/or vertically
Rotate 90° to left or right
Grayscale or negative color
Add an overlay text with custom color, font, size, position, alignment, you name it (this is a fast and easy way to watermark your pictures)
Add a proper watermark image overlay, pointing to an image file, choosing its position and transparency
Change color scheme inverting the order of the RGB values
Apply other filters: sharpen, brightness, contrast, gamma correction, saturation, color balance for R G and B, bur, median, and fine rotation (choose amount of degrees)
You can choose whether overwriting or renaming destination files, move them to subfolders, and so on
You can add multiple files to the batch job by picking them from different arbitrary folders or loading them from a list saved into a TXT file
The headquarters of Ephestione, online since 2001 ______________________________ ________________ _________________ Il quartier generale di Ephestione, online dal 2001