> For the complete documentation index, see [llms.txt](https://docs.viesus.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.viesus.com/discover/key-features.md).

# Key Features

VIESUS combines traditional image enhancement with AI-powered features for analysis, optimization, repair, upscaling, and composition.

VIESUS offers automatic, per-image enhancement across the capability areas below. Every feature is controlled by parameters in `viesusini.json` and works identically across all on-premise interfaces.

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="image"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><h4>Image Quality</h4></td><td>Per-image color, contrast, sharpening, noise reduction, face detection, and red-eye removal — the main enhancement catalogue.</td><td><a href="https://919968377-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FG3eQlcnlDKtn9yl3mxsx%2Fuploads%2Fgit-blob-2aac38d3a6989f640b75c2aeecf11934ec13a3c3%2Fplaceholder.svg?alt=media">placeholder.svg</a></td><td><a href="/features/features.md">Image Quality</a></td></tr><tr><td><h4>HDR Support</h4></td><td>Tonemap HDR images (HEIC, JPEG with gainmap) to SDR with seven tonemapping modes.</td><td><a href="https://919968377-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FG3eQlcnlDKtn9yl3mxsx%2Fuploads%2Fgit-blob-2aac38d3a6989f640b75c2aeecf11934ec13a3c3%2Fplaceholder.svg?alt=media">placeholder.svg</a></td><td><a href="/features/hdr-support.md">HDR Support</a></td></tr><tr><td><h4>Native PDF Enhancement</h4></td><td>Process PDFs with embedded images — enhance each image while preserving layout, fonts, and vectors.</td><td><a href="https://919968377-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FG3eQlcnlDKtn9yl3mxsx%2Fuploads%2Fgit-blob-2aac38d3a6989f640b75c2aeecf11934ec13a3c3%2Fplaceholder.svg?alt=media">placeholder.svg</a></td><td><a href="/features/native-pdf-enhancement.md">Native PDF Enhancement</a></td></tr><tr><td><h4>Image Formats</h4></td><td>Supported input and output formats — JPEG, TIFF, PNG, HEIC, WebP, and more.</td><td><a href="https://919968377-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FG3eQlcnlDKtn9yl3mxsx%2Fuploads%2Fgit-blob-2aac38d3a6989f640b75c2aeecf11934ec13a3c3%2Fplaceholder.svg?alt=media">placeholder.svg</a></td><td><a href="/features/image-formats.md">Image Formats</a></td></tr><tr><td><h4>AI Upscaling</h4></td><td>Increase printable resolution up to 16× — AI super-resolution invents detail that traditional interpolation can't recover.</td><td><a href="https://919968377-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FG3eQlcnlDKtn9yl3mxsx%2Fuploads%2Fgit-blob-2aac38d3a6989f640b75c2aeecf11934ec13a3c3%2Fplaceholder.svg?alt=media">placeholder.svg</a></td><td><a href="/features/features.md#ai-super-resolution-upscaling">Image Quality</a></td></tr><tr><td><h4>Background Handling</h4></td><td>AI segmentation to remove, replace, blur, or composite the background of portraits and product shots.</td><td><a href="https://919968377-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FG3eQlcnlDKtn9yl3mxsx%2Fuploads%2Fgit-blob-2aac38d3a6989f640b75c2aeecf11934ec13a3c3%2Fplaceholder.svg?alt=media">placeholder.svg</a></td><td><a href="/features/features.md#background-handling">Image Quality</a></td></tr></tbody></table>

For ready-to-use starting configurations, see the [Presets Gallery](/configuration/presets-gallery.md). For the parameter-level technical reference, see the [Parameter Reference](/configuration/parameter-reference.md).


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