What is the image converter?
The ShareX image converter batch converts one or more image files to PNG or JPEG. It provides a preview, JPEG quality control, output naming and a background color for formats that do not support transparency.
Open it from Tools -> Image converter.
Convert images
- Add image files or drag them into the window.
- Choose PNG or JPEG as the output format.
- For JPEG, set the quality and background color.
- Choose an output folder.
- Enter an output filename pattern.
- Review the preview and select Convert.
The $filename token in the output pattern is replaced with each source file's name without its extension. The default pattern adds _converted, which prevents the converted file from using the same name as its source.
PNG or JPEG?
- PNG is lossless and preserves transparency. It is a good choice for screenshots, interface graphics, logos and text-heavy images.
- JPEG uses lossy compression and can create smaller photographs. It does not support transparency, so ShareX fills transparent pixels with the selected background color.
A higher JPEG quality usually preserves more detail but creates a larger file. Inspect text and sharp edges in the preview because compression artifacts are especially visible around high-contrast UI elements.
Batch conversion tips
- Keep
$filename in the pattern when converting several files so each output receives a unique name.
- Use a separate output folder when testing settings or processing valuable originals.
- Image conversion changes the encoding, not the dimensions. Use Image resizer when the pixel size also needs to change.