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Home / v3.8.0
Name Modified Size InfoDownloads / Week
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SageThumbs2K-Portable-3.8.0-arm64.zip.sig 2026-10-19 128 Bytes
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SageThumbs2K-Setup-3.8.0-amd64.exe 2026-10-19 15.1 MB
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SageThumbs2K-Setup-3.8.0-amd64.exe.sig 2026-10-19 128 Bytes
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SageThumbs2K-Portable-3.8.0-arm64.zip 2026-10-19 25.1 MB
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SageThumbs2K-Portable-3.8.0.zip 2026-10-19 27.0 MB
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SageThumbs2K-Portable-3.8.0.zip.sig 2026-10-19 128 Bytes
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SageThumbs2K-Setup-3.8.0-arm64.exe.sig 2026-10-19 128 Bytes
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SageThumbs2K-Setup-3.8.0.exe 2026-10-19 15.1 MB
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SageThumbs2K-Setup-3.8.0.exe.sig 2026-10-19 128 Bytes
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SageThumbs2K-Setup-3.8.0-arm64.exe 2026-10-19 13.7 MB
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README.md 2026-10-19 4.6 kB
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SageThumbs 2K 3.8.0 source code.tar.gz 2026-10-19 9.1 MB
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SageThumbs 2K 3.8.0 source code.zip 2026-10-19 10.2 MB
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Totals: 13 Items   115.2 MB 0
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TL;DR

🆕 New

  • 3MF files without a saved picture show their model

🩹 Fixed

  • 3D models no longer look see-through
  • Bambu Studio and OrcaSlicer 3MF files show their picture
  • Backup and template files name the right thumbnail source
  • The File types list shows every extension in full
  • The File types list's Category column is in your language
  • The File types list's How column no longer cuts off translated labels
Read more: everything in 3.8.0 - **3MF files without a saved picture show their model.** A 3MF from a CAD program, or a bare model file, carries only the 3D model and no picture of it, so it got no thumbnail, or a texture or other stray image from inside the file. The model is now drawn, the same way STL files are, including the multi-part files Bambu Studio and OrcaSlicer write. When the file does carry a slicer's picture, that picture is still what you see. - **3D models no longer look see-through.** STL, OBJ and PLY thumbnails were drawn from below the model, and mirrored, so a solid print showed its underside and read as a hollow, see-through shell. They are now drawn from above and in front, the way a slicer shows them, with shading that follows the light, so a solid looks solid. - **Bambu Studio and OrcaSlicer 3MF files show their picture.** These slicers save their preview as the first plate's render rather than the `thumbnail.png` other slicers use. SageThumbs missed it and showed another image from the file, a nearly empty mask the slicer uses for clicking on objects, so the thumbnail came out blank and see-through. The plate's render is now shown. - **Backup and template files name the right thumbnail source.** The Settings format list and `st2k formats` said Blender's auto-save backups (`.blend1` to `.blend32`), SketchUp backups (`.skb`), Photoshop `.psdt` and `.pdd` files and Affinity templates (`.aftemplate`) were fully decoded. Like the files they are copies of, they show the preview stored inside, and they now say so. The thumbnails themselves are unchanged. - **The File types list shows every extension in full.** Its columns had fixed widths that did not grow with Windows display scaling, so at 150% or 200% the checkbox took up most of the Extension column and extensions were cut to `.ap…` or `b…`. Extensions now always show in full, in every language and at every scaling, and the other columns size themselves to what they hold. You can still drag the dividers, and double-clicking one fits that column to its contents. - **The File types list's Category column is in your language.** It said Image, Ebook, Audio and so on in English whatever language SageThumbs was set to. It now follows your language in all 36 that SageThumbs speaks, and the search box above the list finds a format by its category in your language or in English. - **The File types list's How column no longer cuts off translated labels.** In 24 languages some How labels ran up to three times as wide as the English ones, mostly the "(OS codec)" note on video rows, so they ended in "...". They now use the short forms each language's own software uses (OS, SO, ОС, 系统解码器 and so on), and every one fits.

Downloads

Every file below is code-signed by LUNARWERX LLC; the SHA-256 lets you check a download is the one published here.

  • x64 installer: SageThumbs2K-Setup-3.8.0.exe · SHA-256 dd32f013bea240b69eab02b20ef25997476004ba085d2bbccfceb1289d13fc67
  • ARM64 installer: SageThumbs2K-Setup-3.8.0-arm64.exe · SHA-256 0ccb3f7d5cc84281d86bf05f3a5cc4e441c8bb8aedb29233db5b59e1c5806390
  • x64 portable: SageThumbs2K-Portable-3.8.0.zip · SHA-256 28dd32f4a768a9cf0771848941c269e192c07534117afb333798bfd3955fcfc9
  • arm64 portable: SageThumbs2K-Portable-3.8.0-arm64.zip · SHA-256 8bf4e2301de14e48cf6fb0e52aff875094957e1fa2afa0a6b3d618fb3dafbd25

Portable: unzip and run, nothing is installed. st2k register (or Settings, Advanced) turns on Explorer thumbnails and the classic right-click menu for your account; only the preview pane, the Details pane and the Windows 11 compact menu still need the installer. SageThumbs2K-Setup-3.8.0-amd64.exe is the x64 installer again, under the name copies older than 1.3.6 look for; download the plain one.

💬 Questions, ideas, or a hello: the LunarWerx Discord.

Source: README.md, updated 2026-10-19