SageThumbs 2K

SageThumbs 2K 3.10.0

Explorer thumbnails for 364 file types Windows can't read, plus a right-click image toolkit.

  • By LunarWerx
  • Paid
  • Updated Oct 26, 2026
Download for Windows

About SageThumbs 2K

SageThumbs 2K is a modern, crash-isolated Windows 11 shell extension written in Rust that rebuilds the classic SageThumbs. It gives File Explorer thumbnails for 364 file types Windows can't preview on its own — camera RAW, HEIC/AVIF, Photoshop, DjVu, ebooks and comics, video frames, 3D-print files and a long tail of obscure formats — plus a right-click image toolkit (convert, resize, rotate, OCR, color picker, metadata strip, combine-to-PDF/CBZ) and a console/AI CLI. Free for personal use.

What's new in 3.10.0

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<img src="https://raw.githubusercontent.com/LunarWerxs/SageThumbs-2k/v3.10.0/assets/logo-master.png" width="96" alt="SageThumbs 2K logo">
</div>

TL;DR

🆕 New

  • Adobe Flash (.swf) movies get thumbnails (#70)
  • Add and remove dividers in Edit menu items

🔁 Changed

  • Edit menu items saves only on Done
  • One Reset in Edit menu items brings back the whole factory menu
  • Edit menu items explains itself above the list

🩹 Fixed

  • Store apps' icons stay as they are: no badge, no checkerboard, never blank
  • Dragging a row in Edit menu items keeps the list where it was scrolled
  • A divider dragged beside another stays until Done
  • Escape closes Edit menu items
  • Settings comes back to the front when Edit menu items closes
  • The list in Edit menu items fills its window

<details>
<summary><b>Read more: everything in 3.10.0</b></summary>

  • Adobe Flash (.swf) movies get thumbnails. A Flash movie used to keep the plain file icon. SageThumbs now draws the movie from its own shapes, gradients and pictures, with no Flash Player and no script run. A movie that opens on a "loading" screen is shown as the first frame that has something on it, so the thumbnail is the movie's picture rather than an empty background. Text in a font the movie does not carry, and movies packed with LZMA, are not drawn yet. Thanks to TOM-PIC for the report and the sample (#70).
  • Add and remove dividers in Edit menu items. Right-click a row in Settings Γû╕ Right-click menu Γû╕ Edit menu items for Add divider above, Add divider below and, on a divider, Remove divider. There was no way to add a divider before. The Check, Uncheck and Toggle selected entries, which did nothing a click on the tick box did not, are gone from that list's menu.
  • Edit menu items saves only on Done. Cancel, Escape and the window's X now throw the edit away and put the list back the way it was when the window opened. In 3.9.0 the X saved everything, so there was no way to back out of a change.
  • One Reset in Edit menu items brings back the whole factory menu. Reset order only put the rows back in order and left the ticks alone. Reset now restores the order, the ticks and the dividers, and like every other edit it takes effect on Done.
  • Edit menu items explains itself above the list. The help text was a tooltip that followed the mouse over every row and the scrollbar; it is now a line of text above the list. …

Full release notes »

Technical details

PublisherLunarWerx
Version3.10.0
Release date2026-10-26
LicensePolyForm Noncommercial License 1.0.0
Installer typeinno
Architecturex64, arm64
Package IDLunarWerxs.SageThumbs2K

Links & install command

Install SageThumbs 2K from the command line with Windows Package Manager (winget):

winget install --id=LunarWerxs.SageThumbs2K -e

converterexplorerheicimagerawshell-extensionthumbnails

Older versions

  • 3.9.0
  • 3.8.0
  • 3.7.4
  • 3.7.3
  • 3.7.2
  • 3.7.1
  • 3.7.0
  • 3.6.0
  • 3.5.0