> ## Documentation Index > Fetch the complete documentation index at: https://docs.filecheck.io/docs/llms.txt > Use this file to discover all available pages before exploring further. # Raster Checks > The full check set for a Raster preflight profile — for standalone image uploads like JPEG, PNG, and TIFF. A **Raster profile** checks standalone image uploads (JPEG, PNG, TIFF, WebP) — not images embedded inside a PDF, which are covered by the PDF [Images](/configuration/preflight/images) section. Raster checks focus on whether the image is big enough, the right shape, and in a print-ready color mode. Many can auto-fix using AI and image transforms. Each check lists its **action**, **settings**, and the messages the customer sees; see the [profile overview](/configuration/preflight) for how actions work. ## Effective Resolution The minimum resolution at the target print size, with optional AI upscaling to meet it. Effective DPI = pixel size ÷ target print size. | Field | Detail | | :----------- | :----------------------------------------------------------------------------------------------------------------------------------------------- | | **Action** | Reject (can auto-fix) | | **Settings** | Minimum (dpi, default 300), Print width (mm), Print height (mm) | | **Issue** | Your image won't be sharp at the required print size. It works out to `{actual.effective_dpi}` DPI, but we need at least `{target.min_dpi}` DPI. | | **Fix** | Upload a higher-resolution image so it reaches at least `{target.min_dpi}` DPI at print size. | | **Auto-fix** | We'll AI-enhance your image to the required resolution automatically before printing. | ## Minimum Pixel Size The smallest acceptable dimensions in pixels. Auto-fix uses AI to upscale smaller images. | Field | Detail | | :----------- | :----------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Action** | Auto-fix | | **Settings** | Min width (px), Min height (px) | | **Issue** | Your image is smaller than required. You uploaded `{actual.width}` × `{actual.height}` pixels, but we need at least `{target.min_width}` × `{target.min_height}` pixels. | | **Fix** | Upload a higher-resolution image, at least `{target.min_width}` × `{target.min_height}` pixels. | | **Auto-fix** | We'll enhance your image to the required size automatically before printing. | ## Maximum Pixel Size Flag images larger than needed. Auto-fix reduces oversized dimensions. | Field | Detail | | :----------- | :----------------------------------------------------------------------------------------------------------------------------------------- | | **Action** | Warn (can auto-fix) | | **Settings** | Max width (px), Max height (px) | | **Issue** | Your image is larger than needed (`{actual.width}` × `{actual.height}` pixels), which may slow processing without improving print quality. | | **Fix** | Resize your image down and re-upload. | | **Auto-fix** | We'll resize your image down automatically before printing. | ## Color Mode Which color modes are accepted (e.g. CMYK, Grayscale, RGB). | Field | Detail | | :----------- | :------------------------------------------------------------------------------------------------------------------------ | | **Action** | Auto-fix | | **Settings** | Allowed (CMYK / Grayscale / RGB / Lab / Indexed) | | **Issue** | Your image is in `{actual.colorspace}` color mode, which isn't suitable for this product — we require `{target.allowed}`. | | **Fix** | Convert your image to `{target.allowed}` color mode and re-upload. | | **Auto-fix** | We'll convert your image to a print-ready color mode automatically before printing. | ## Bit Depth The minimum color bit depth required to avoid banding. | Field | Detail | | :----------- | :----------------------------------------------------------------------------------------- | | **Action** | Auto-fix | | **Settings** | Minimum (1 / 4 / 8 / 16 bit, default 8) | | **Issue** | Your image has low color depth, which can cause banding. Use `{target.min}`-bit or higher. | | **Fix** | Re-save your image at `{target.min}`-bit or higher and re-upload. | | **Auto-fix** | We'll increase the color depth automatically before printing. | ## Transparency Allow a transparent background, or flatten it to a solid color. | Field | Detail | | :----------- | :------------------------------------------------------------ | | **Action** | Auto-fix | | **Settings** | Allow transparency (toggle) | | **Issue** | Your image has a transparent background. | | **Fix** | Flatten the transparent background and re-upload. | | **Auto-fix** | We'll flatten the transparency automatically before printing. | ## Background Removal Automatically remove the background from the uploaded image. | Field | Detail | | :----------- | :--------------------------------------------------------------------------------------- | | **Action** | Auto-fix | | **Settings** | None | | **Issue** | This product requires an image without a background, but your image appears to have one. | | **Fix** | Remove the background from your image and re-upload. | | **Auto-fix** | We'll attempt to remove the background automatically before printing. | ## Maximum File Size The largest file customers may upload. | Field | Detail | | :----------- | :-------------------------------------------------------------------------------- | | **Action** | Reject | | **Settings** | Max size (MB, default 50) | | **Issue** | Your image file is too large. The limit for this product is `{target.max_mb}` MB. | | **Fix** | Reduce the file size and try uploading again. | ## ICC Profile Required Require an embedded color profile to keep colors consistent on press. | Field | Detail | | :----------- | :------------------------------------------------------------------------------------------------------------------------ | | **Action** | Auto-fix | | **Settings** | Expected profile (any ICC profile, or a specific one) | | **Issue** | Your image doesn't include the required `{target.expected_profile_name}` color profile, so colors may shift when printed. | | **Fix** | Embed the correct color profile when saving your image and re-upload. | | **Auto-fix** | We'll embed the expected color profile automatically before printing. | ## Aspect Ratio Restrict image proportions. Auto-fix pads or crops the image to the required ratio. | Field | Detail | | :----------- | :--------------------------------------------------------------------------- | | **Action** | Auto-fix | | **Settings** | Ratio, Tolerance | | **Issue** | Your image isn't the right aspect ratio (`{target.ratio}`) for this product. | | **Fix** | Resize your image to `{target.ratio}` and re-upload. | | **Auto-fix** | We'll resize your image to the correct shape automatically before printing. | ## Total Ink Coverage Limit total ink coverage (TAC) to prevent print defects. | Field | Detail | | :----------- | :---------------------------------------------------------------------------------------------------------------------------------------- | | **Action** | Off (can auto-fix) | | **Settings** | Max TAC (%, default 300), Convert to profile (ICC) | | **Issue** | Your image has too much ink in some areas (`{actual.max_percent}`%), which can cause print defects. The limit is `{target.max_percent}`%. | | **Fix** | Reduce the total ink coverage and re-export. | | **Auto-fix** | We'll reduce the ink coverage automatically before printing. |