Over the years I’ve perfected my way to resize my JPEGs to send them via mail or upload them to a cloud.
- Download and install Irfanview (irfanview.com)
- Choose a 64-bit Version if possible
- Open Irfanview and choose File –> Batch Conversion / Rename
File – Batch Conversion
- Now the setup screen is displayed
- Add the photos to “input files” by looking for the folder in the directories and selecting them individually or by CTRL+A for all.
- You can convert , rename or both.
- In Output format, set to JPEG and for quality I usually use something between 50-80 for small filesize and good quality.
- Also check the box for the advanced options to resize, I’ll explain that in the next picture
- When renaming, set the Name pattern.
- e.g. Image### sets it to Image001, Image002…
- The Output directory is usually the current look in directory.
Batch converison setup windows
- Advanced options
- Here you can set all kinds of things, this make Irfanview batch processing so powerful
- Resize
- Usually I resize to the long side, because that way portrait format images are also correct.
- Preserve aspect ratio
- use resample function (better quality)
- Mostly I also check “Don’t enlarge smaller images”
- Sharpening when resizing images to smaller sizes is also advised. A value between 2-4 is good here for most cases.
Advanced option for resize
Now hit “Start Batch” and your photos should be found with a much smaller filesize in you selected output folder.
Irfanview also supports the display RAW files with a plugin which can be found on the website, but it’s using only the small Preview Image saved with the RAW file, so it’s not advised to use the batch processing with RAW files.
I hope I could help some people with this tutorial. If you have any advice what to improve, just leave a comment
imaginationcorpse 