PXM automatically generates multiple variants of every image you upload — different sizes and formats that can be served across your digital channels. The Image Conversion settings let you control exactly what those variants look like: their pixel dimensions, file format(s), compression quality, and how they are sized.

These settings apply system-wide. For most images, PXM creates sizes and formats when they are first requested, using your current settings.

Image Conversion is organized into four size tiers, each of which can be configured independently:

Each tier has the same set of configurable settings. A thumbnail is always created for every image.

Pixel Size
The maximum dimension (in pixels) for this size tier. For example, setting 2000px for Large means the long edge will be resized to 2000px.

Quality
The compression quality of the output file, as a percentage. Defaults to 95%. A slightly lower quality setting (e.g., 95%) is recommended for images that will be uploaded to marketplace channels — it reduces file size and improves acceptance rates without a visible difference in image quality.

Constrain By
Whether the pixel size is applied to the image's width or height. Use this to ensure images fit a specific dimension requirement for your channels. This setting is found at the top and will be applied to all variations.

File Formats
Choose which format(s) to generate for this size tier: JPEG, PNG, and/or WebP. You can enable one or more formats per tier. For Large, Medium and Small, PNG and WebP are set together in one PNG/WEBP section. The JPG settings also include Transparent Pixels Color, the color used to fill transparent areas, and each format has an Include in Download option.

For most images, PXM creates sizes and formats when they are first requested, using your current settings, so changes apply to those images without reconverting.

Some older images, generally those uploaded before late July 2026, may still use their original sizes. Use Convert on those if you need the new settings. Links you already copied keep the size and format they were created with.

⚠️ Important: Only reconvert 100–200 images at a time. Converting too many images simultaneously can cause the system to become unresponsive.

Once files have been converted, you can access their variants from the File Details page:

Note: Some files do not support size variant generation — in those cases you may have a preview and thumbnail created for those files. Some files may not receive a preview or a thumbnail. (ie. .zip files)