Report what this image server can do: supported formats, available operations, resource limits, security posture, and whether GPU acceleration is active. Call this first when you are unsure which formats or features are available.

Read an image's metadata without modifying it: dimensions, format, colour mode, animation frames, EXIF, perceptual hashes and dominant colours.

Convert an image between formats (JPEG, PNG, WebP, AVIF, TIFF, GIF, BMP, ICO, JPEG 2000, QOI, PPM), controlling quality, losslessness and metadata.

Resize by width, height, percentage, or to fit a box. Supports contain, cover, fill, inside, outside and pad fit modes, all resampling filters, and optional format change.

Reduce an image's file size, either by a quality level or by searching for the best quality that stays under a target size. Reports the exact saving achieved.

Crop by explicit pixel box, by aspect ratio with a gravity anchor, or auto-trim a uniform border.

Rotate by any angle, mirror horizontally or vertically, and/or apply the EXIF orientation so the pixels match what a viewer shows.

Produce a thumbnail of an exact size, choosing the crop by saliency (attention or entropy) instead of blindly taking the centre.

Run several operations in one call, in order. Prefer this over chaining single-step tools: it transfers the image once and applies every step server-side. Operations: auto_orient, resize, crop, rotate, flip, sharpen, blur, smart_crop, watermark_text, watermark_image, background_remove, feather.

Add a text or image watermark with position, opacity, rotation and optional tiling. Supply either 'text' or 'watermark_path'.

Make the background transparent. method='color' keys out a flat border colour (instant, offline, best for product/logo shots); method='ml' uses a U^2-Net model for arbitrary backgrounds; method='auto' picks ML when the model is installed.

Run the same operation list across every image in a directory, a glob, or an explicit list of paths. Each file is independent: a failure is reported per file and does not abort the run. Use a {name} placeholder in output_name for per-file suffixes.

Measure how different two images are: SSIM, RMSE, PSNR, mean and max pixel difference, the fraction of changed pixels, and perceptual-hash distance. Use it to verify a transform or to spot duplicate images.

Turn one source image into a set of web-ready variants at several widths, each optionally constrained to a maximum file size, plus a tiny blurred placeholder and a ready-to-paste srcset. This is the one call to use for 'make this web-ready'.