Graphic Workshop Thumbnail

Unknown

image

Image thumbnail files created by default within Graphic Workshop whenever a graphic file is written or updated. Can contain image, keywords and/or comment information. THN files are read by Graphic Workshop when it wants to display thumbnail images. The files themselves do not store graphics in any conventional sense.

Identify it

Extensions	`.thn`
Signatures	`54484e4c` at byte 0 (Graphic Workshop Thumbnail File)
PRONOM	`fmt/336`
Wikidata	`Q63415958`

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Open it

Graphic Workshopreads and writes

Convert it

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Sources

File Formats Wiki
PRONOM fmt/336
Wikidata Q63415958

From Just Solve the File Format Problem (File Formats Wiki), PRONOM, Wikidata. Updated 2026-10-24.

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