# ThumbHash: compact image placeholders with transparency

Canonical source : [ThumbHash: compact image placeholders with transparency](<https://sebastien.rigaux.be/en/tech-watch/links/thumbhash-compact-image-placeholders-with-transparency>)

ThumbHash stores a compact image placeholder alongside application data. It encodes aspect ratio and transparency to improve the display before the full image loads.

- Selected on : 2024-09-14

- Entry updated : 2026-11-07T20:32:37+0000

- Format : Repository

- Source language : EN

Original resource : [ThumbHash: compact image placeholders with transparency](<https://github.com/evanw/thumbhash>)

Tags : [Image optimization](<https://sebastien.rigaux.be/en/tech-watch/tags/image-optimization>) · [Web Performance](<https://sebastien.rigaux.be/en/tech-watch/tags/web-performance>) · [UI/UX](<https://sebastien.rigaux.be/en/tech-watch/tags/ui-ux>)

Available versions : [Français](<https://sebastien.rigaux.be/veille/liens/thumbhash-encoder-un-apercu-d-image-compact-avec-transparence>) · [English](<https://sebastien.rigaux.be/en/tech-watch/links/thumbhash-compact-image-placeholders-with-transparency>)

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