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Advanced Image Options |
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Image processing
Resize method Select the resize method. Lanczos or Mitchell generally give the best results. Select "Only reduce images" to leave images smaller than the specified width and height unmodified.
Filter Select the image filter to be applied to the images. Images that are resized to small sizes like 100 or 200 pixels sometimes look a bit blurry. This can be corrected by selecting a Sharpen filter. Select "Apply to resized images only" if you want to apply the selected filter only if an image has been resized.
Save
File save format Select the default format that Arles uses to save images.
To prevent quality loss, GIF and JPEG images will only be copied and not converted if they are not modified.
Select the "Always save images" option to force Arles to always save images, even when no image processing like resize is specified. Use this if you want to save JPEG images with a new quality level without doing any other image processing. It also comes handy if you want to save your JPEGs as PNG images or PNGs as JPEGs.
JPEG images can contain EXIF, IPTC and commentinformation inside the image file. Select Maintain JPEG EXIF, IPTC and comment information if you want this information to be copied to the modified images.
JPEG image quality Use the slider to select the image quality of generated JPEG images. Better quality also means larger file size.
Generally, values between 70 and 90 are a good trade off between high quality images and reasonable file sizes. Select 70 if you want the smallest file size with acceptable image quality. Select 90 for good quality images with acceptable file sizes.
If you are working on a CRT monitor, keep in mind that LCD monitors show image artifacts of low quality JPEGs sooner than CRT monitors. One other thing to keep in mind is that due to the nature of JPEG compression, blurry images compress better than sharp ones. If very small file sizes are critical, turn off the sharpen filter or select Mitchell resize method instead of Lanczos 3.
Tip For top quality lossless images, select PNG images as default output graphic format. |