| Name | Modified | Size | Downloads / Week |
|---|---|---|---|
| Parent folder | |||
| SageThumbs2K-Setup-3.1.0-amd64.exe | 2026-09-17 | 14.3 MB | |
| SageThumbs2K-Setup-3.1.0-amd64.exe.sig | 2026-09-17 | 128 Bytes | |
| SageThumbs2K-Portable-3.1.0-arm64.zip | 2026-09-17 | 23.2 MB | |
| SageThumbs2K-Portable-3.1.0-arm64.zip.sig | 2026-09-17 | 128 Bytes | |
| SageThumbs2K-Portable-3.1.0.zip | 2026-09-17 | 24.9 MB | |
| SageThumbs2K-Setup-3.1.0-arm64.exe.sig | 2026-09-17 | 128 Bytes | |
| SageThumbs2K-Portable-3.1.0.zip.sig | 2026-09-17 | 128 Bytes | |
| SageThumbs2K-Setup-3.1.0-arm64.exe | 2026-09-17 | 13.0 MB | |
| SageThumbs2K-Setup-3.1.0.exe | 2026-09-17 | 14.3 MB | |
| SageThumbs2K-Setup-3.1.0.exe.sig | 2026-09-17 | 128 Bytes | |
| README.md | 2026-09-17 | 5.3 kB | |
| SageThumbs 2K 3.1.0 source code.tar.gz | 2026-09-17 | 9.2 MB | |
| SageThumbs 2K 3.1.0 source code.zip | 2026-09-17 | 9.9 MB | |
| Totals: 13 Items | 108.7 MB | 2 | |
The JPEG XL crash behind issue [#43] is fixed, sixteen more file types get thumbnails, and three formats that were listed but never worked on a real file now do.
TL;DR
🆕 New
- Twelve more file types get thumbnails, including Aseprite and SolidWorks
- Old MPEG videos get thumbnails with nothing to install
🩹 Fixed
- JPEG XL files made from JPEGs thumbnail again, no Explorer crash (fixes [#43])
- Three formats that never worked on real files now do
- Brother embroidery files no longer claim thumbnails they never got
Read more: everything in 3.1.0
- **JPEG XL files made from JPEGs get their thumbnails back, and a right-click on one no longer takes Explorer down.** A `.jxl` that `cjxl` made from a JPEG keeps the JPEG's colour layout, and the fast thumbnail path mishandled that layout: no thumbnail in the folder, and Explorer restarting when you right-clicked the file. Every phone photo converted with `cjxl` has that layout, so this was most `.jxl` files people actually have. Reported in issue [#43]. - **Twelve more file types get thumbnails**, including the two asked for through the feedback form. Pixel art and sprites: **Aseprite** (`.aseprite`, `.ase`) is drawn by SageThumbs itself from the layers inside it, the way the editor shows it on open (layer blending is drawn plainly and tile-based layers are left out), and **Pixelorama** (`.pxo`) shows the preview the app saves inside the file. **SpriteLoop** animation packages (`.spla`) are drawn too, since the package holds only the separate body parts: you get the first frame of its first animation, every piece in its place. 3D printing: **PrusaSlicer's new binary G-code** (`.bgcode`) shows the same sliced preview the ordinary `.gcode` files already did. CAD: **SolidWorks** parts, assemblies and drawings (`.sldprt`, `.sldasm`, `.slddrw`) show the preview stored in the file, for the older save format that keeps one; files written by SolidWorks 2015 and newer store no preview any other program can read, so those keep their usual icon. And **Minecraft** worlds, packs and add-ons (`.mcworld`, `.mctemplate`, `.mcpack`, `.mcaddon`) show the world photo or pack icon inside them. - **Three formats that were listed but never worked on a real file now do.** Seattle FilmWorks photos (`.sfw`, the 1990s "Pictures on Disk" floppies) and Alias/Wavefront `.pix` images are decoded by SageThumbs itself now, and Scitex `.sct` files reach the right reader. Found by feeding the test corpus real files from other programs for every format it lists. - **Old MPEG videos get thumbnails, with nothing to install.** The `.mpg` and `.mpeg` files a VideoCD or a late-1990s camera wrote, raw MPEG video files (`.m1v`, `.m2v`) and DVD `.vob` files are all drawn by SageThumbs itself now, in a separate short-lived process like its Flash and HDR video decoders. Windows cannot open the first three at all, and asks for a Store add-on before it will open a `.vob`; neither is needed any more. `.m1v` is a new file type, and so are `.mpv`, `.mp2v` and `.m2p`, three more names the same old MPEG files are saved under by DVD and capture tools. Recordings that hold MPEG-2 video inside a transport stream or a Matroska file still use Windows' own decoder, so that add-on still matters there. - **Brother embroidery files (`.pes`) no longer claim a thumbnail they never produced.** The listing promised one, but drawing those stitches needs a graphics library this app deliberately does not ship, so every install has always shown the ordinary file icon for them. The claim is gone; nothing that used to draw stopped drawing. - For the few installations that need a business licence: the Licence page has been tidied up, and there is now a monthly plan, US$2.99 per computer, alongside the one-time US$49. Personal use is unaffected and stays free.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-3.1.0.exe· SHA-2562975c7dd9516c8740d70cc14bd2aa0bb4545d941128ea4c39270294d0337f4ab - ARM64 installer:
SageThumbs2K-Setup-3.1.0-arm64.exe· SHA-2561691a0acb7188bdcbd59df168df03bedb208123ae8e3edb61278eda5208aacf9 - x64 portable:
SageThumbs2K-Portable-3.1.0.zip· SHA-2561c7f3ff9384fee82aa5be1e955b3af7b6b006d91905770a06bc63a4359b5f1b6 - arm64 portable:
SageThumbs2K-Portable-3.1.0-arm64.zip· SHA-256f534c52d293d9f635774f2377064ff14a4c17add613f151cf3147e454562284a
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-3.1.0-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.
