What file formats does FenSight support?

FenSight supports PNG, JPG/JPEG, BMP, GIF, TIFF, TGA, WEBP, JPEG-XL, AVIF, HEIF/HEIC, DICOM, and most RAW formats (DNG, CR2, CR3, NEF, ARW, RAF, and more). It also supports video files and image sequences.

Does FenSight require an internet connection?

FenSight is built for offline use after activation. License keys validate locally, and the app may periodically check license status for refund or revocation handling. Optional AI features can run locally where supported or use providers you configure.

Is FenSight a subscription or one-time purchase?

FenSight is a one-time purchase with no recurring subscriptions. You buy it once and own it forever. Free updates are included, and you can use it offline indefinitely.

Can I use FenSight with Photoshop or other creative tools?

Yes. FenSight supports external drag-out, meaning you can drag selections directly from the canvas into Photoshop, Illustrator, Figma, or any application that accepts file drops. You can also export to clipboard, file, or FTP/FTPS.

What are the system requirements for FenSight?

FenSight requires Windows 10 64-bit (build 19044+) or Windows 11. The .NET 9.x runtime is bundled. Minimum: 8 GB RAM and DirectX 11 GPU. Recommended: 16 GB RAM with a dedicated GPU for large boards and AI features.

Layouts and grouping/02

Clustering Dimensions

Pro

Every heuristic FenSight can group by, and how each is computed.

Clustering dimensions are the metadata, file facts, and visual signals FenSight uses to split a board into labeled buckets. You can apply many of them directly from the layout dropdown, or combine any Custom Cluster Layout heuristic with a group shape, item shape, ordering, and label style.

How to choose a dimension

Toolbar

Layout dropdown -> Cluster: ...

Applies a one-click built-in cluster mode immediately.

Toolbar

Layout dropdown -> Custom Cluster Layout... -> Clustering Heuristic

Builds a reusable Pro preset from a heuristic, Group Shape, Shape, sort order, neutral threshold, and label colors.

Two surfaces, one grouping model

The built-in layout dropdown exposes ready-made modes such as Cluster: Extension, Cluster: Color Hue, Group: Width, and AI: Visual Similarity. The Custom Cluster Layout dialog exposes a Clustering Heuristic list for reusable presets. When the names differ, the custom heuristic maps to the built-in mode shown in the technical note.

One-click modes are fastest when the grouping dimension and packing style are already what you want.
Custom Cluster Layout is for repeatable board recipes: choose the dimension, choose how groups are placed, choose how items pack inside each group, then save the preset.
Normal is available as a custom heuristic row for normal-map detection, but it does not map to a separate built-in layout mode.

Dimensions

This table includes every Clustering Heuristic visible in the custom dialog plus the built-in-only dimensions exposed by the layout dropdown.

Name	What it groups by	Mode and technical note
Folder PathPro	Groups items by their containing folder.	Custom heuristic maps to Cluster: Parent Folders. Paths are normalized and the largest path buckets are kept up to the path bucket cap.
Sort by NamePro	Groups filenames alphabetically, with non-alpha names handled as neutral.	Custom heuristic maps to Cluster: Alphabetical. Alphabetical is also accepted by the mode map; alpha buckets are capped separately from granular numeric buckets.
ExtensionPro	Groups by file extension.	Custom heuristic maps to Cluster: Extension using lowercase extension categories.
Date CreatedPro	Groups by file creation time.	Custom heuristic maps to Cluster: Created Date and builds date/time range buckets from cached signatures or file creation times.
Date ModifiedPro	Groups by last modified time.	Custom heuristic maps to Cluster: Modified Date and builds date/time range buckets from cached signatures or file last-write times.
File SizePro	Groups by size on disk.	Custom heuristic maps to Cluster: File Size and builds numeric size ranges from cached size signatures or file lengths.
Dimension WidthPro	Groups by pixel width.	Custom heuristic maps to Group: Width, which builds width buckets and lays those groups out sequentially.
Dimension HeightPro	Groups by pixel height.	Custom heuristic maps to Group: Height, which builds height buckets and lays those groups out sequentially.
DPIPro	Groups images by DPI.	Custom heuristic maps to Cluster: DPI and uses the larger bitmap DPI axis for numeric range buckets.
Color HuePro	Groups by dominant hue, with low-saturation items treated as neutral.	Custom heuristic maps to Cluster: Color Hue. The engine uses 8 hue buckets; mixed or neutral colors are separated by hue and saturation thresholds.
BrightnessPro	Groups by average brightness.	Custom heuristic maps to Cluster: Brightness and samples thumbnail pixels into percentage brightness buckets.
EntropyPro	Groups by visual complexity.	Custom heuristic maps to Cluster: Entropy and computes Shannon entropy from sampled thumbnails, capped at 50 entropy buckets.
Duration (Audio/Video)Pro	Groups media by playback length.	Custom heuristic maps to Cluster: Duration (Audio/Video) and builds range buckets from media duration metadata.
Audio LoudnessPro	Groups audio by perceived loudness.	Custom heuristic maps to Cluster: Audio Loudness and buckets an RMS loudness score from waveform data.
Audio Dynamic RangePro	Groups audio by dynamic range.	Custom heuristic maps to Cluster: Audio Dynamic Range and buckets a waveform quartile range score.
PBRPro	Groups physically based rendering texture maps by role.	Custom heuristic maps to Cluster: PBR Tags for roles such as packed ORM, normal, albedo, roughness, metallic, AO, height, and IBL.
NormalPro	Identifies normal-map-oriented assets when used from the custom dialog.	This custom heuristic has no separate built-in layout mode. Use PBR when you want the broader Cluster: PBR Tags role grouping.
Geo LocationPro	Groups photos by GPS location.	Custom heuristic maps to Cluster: Geo Location using EXIF GPS metadata through the geo bucket provider; items without GPS fall into a no-location bucket.
Star RatingPro	Groups by item rating when rating metadata is available on the board.	Custom heuristic maps to Cluster: Star Rating. Availability can depend on surfaced board metadata; custom cluster layouts are Pro-gated.
TagsPro	Groups by assigned tags.	Built-in-only mode: Cluster: Tags. It uses the first sorted item tag as the bucket, marks multi-tag items, and sends untagged items to an Untagged bucket.
Aspect RatioPro	Groups by image or media orientation and width-to-height ratio.	Built-in-only mode: Cluster: Aspect Ratio. Ratios are labeled into orientation buckets such as Tall, Squareish, Wide, Cinematic, and UltraWide.
Edge DensityPro	Groups by the amount of edge detail in the thumbnail.	Built-in-only mode: Cluster: Edge Density. Thumbnail contrast changes are sampled and labeled as Flat, Soft, Textured, or Busy.
AI: Visual SimilarityPro	Groups visually related items by learned similarity rather than a single file fact.	Built-in-only mode: AI: Visual Similarity. Compatible stored embeddings are clustered with K-means; when semantic clustering is unavailable, FenSight falls back to the fast visual-signature layout.

Bucket limits keep dense boards readable: granular buckets cap at 150, categorical buckets cap at 50, and path buckets cap at 100. The lower-level cluster engine also uses ClusterBucketCount=12, MaxClusterBucketCount=150, MaxAlphabetBucketCount=50, and MaxEntropyBucketCount=50.

Neutral thresholds

The Custom Cluster Layout Neutral slider only affects Color Hue and Sort by Name. It ranges from 0 to 0.5, ticks by 0.01, and displays 0.18 by default.

For Color Hue, low-saturation items below the neutral threshold are separated from saturated hue buckets. The engine constants include HueBucketCount=8, HueMixedThreshold=0.55, and HueNeutralSaturation=0.18.
For Sort by Name, non-alpha filename starts are treated as neutral using the alphabetical neutral threshold. The engine constant AlphabetNeutralThreshold is 0.18.
Changing the neutral threshold does not change date, file size, folder, extension, audio, geo, tag, PBR, or AI similarity grouping.

Connected guides

Follow these related pages when the workflow crosses into setup, search, organization, export, security, or another board-level system.

Built-in LayoutsEvery one-click arrangement in the layout dropdown.Custom Cluster LayoutCompose Group Shape + Shape + heuristic into a saved preset.Cluster ShapesHow clusters and their contents are packed: Group Shape vs Shape.Tags and filtersAdd meaning that filenames do not carry.AI enrichmentGenerate captions, tags, and embeddings for your assets.Pathing LayoutsRoute items into lanes by Path ID.

Linked from

Star ratings Built-in Layouts Cluster Shapes Custom Cluster Layout World Map visualizer File Size Visualizer