To change the file size you can try to archive it using zip or a rar. They are designed to compress things. However the savings in size for images are limited.
More effectively is to change the image format or to reduce its resolution (reduce width & size of the image). See related questions for more details.
High resolution JPEG images are typically considered to be at least 3000 pixels on the longest side, with a resolution of 300 pixels per inch (ppi).
High resolution for a JPEG image is typically considered to be around 300 pixels per inch (ppi) or higher. This level of resolution ensures that the image is sharp and detailed when viewed on a screen or printed.
The best JPEG resolution for high-quality digital images is typically 300 pixels per inch (ppi) or higher. This resolution ensures sharpness and clarity in the image when viewed on digital devices or printed.
The average size of a JPEG file is typically around 1-5 megabytes, depending on the resolution and quality of the image.
Go to Image > Image Size. If you want to keep current Width and Height of the image uncheck Resample image then type new reolution in Resolution field. When you want to resample image (to change Width and Height to match new resolution) check Resample Image and type desired resolution in Resolution field.
I think the easiest way is to open the jpeg in Paint and save it as a bitmap.
To optimize the resolution of your JPEG image for high-quality printing, you should ensure that the image has a resolution of at least 300 pixels per inch (PPI) and is saved in the CMYK color mode. Additionally, make sure the image is saved at the appropriate dimensions for the desired print size to maintain sharpness and clarity.
JPEG: for photos/images - higher resolution images are smaller in JPG format PNG: for transparency, design elements, logos, etc.
If you took a photo in RAW format it serves no purpose to also take one in JPEG format as the RAW can be processed at any later time to get JPEGs of any quality that you want. JPEG of even the best quality has insignificant resolution compared to RAW.
You must be mistaken, first its jpeg, which is a graphic file, and wma is a audio file. You can't convert jpeg to wma.
To convert RAW images to JPEG format in Lightroom, first import the RAW images into the software. Then, select the images you want to convert and go to the "File" menu. Choose "Export" and set the file format to JPEG. Adjust any desired settings, such as quality and resolution, and then click "Export" to save the images as JPEG files.
First of all crossfire has to support the resolution that you want to change it to, to change the resolution, go on options, and you can change the resolution from there