SageThumbs 2k Files

0.9.0 (2026-07-09)

• The preview pane now handles big files like thumbnails do. Explorer's reading/preview pane used to read a file whole before showing it — so a multi-gigabyte video, a long audiobook, or an oversized comic/.blend/Photoshop file would either bog down the preview host or just show a blank pane, even though its thumbnail worked fine. The pane now uses the exact same shortcuts the thumbnail does: it grabs a single video frame, seeks straight to embedded album art, or pulls the cover out of a huge archive without ever loading the whole file, and it respects your size limit.
• DICOM .dcm medical scans finally thumbnail. They were listed as supported but never actually rendered — the file's TIFF-like header fooled the decoder into treating it as a broken TIFF. CT/MR slices now show real, legible anatomy (the low-contrast medical data is auto-stretched so it isn't just a flat gray square).
• Apple .icns icons actually work now. They were listed as supported but no decoder ever handled them; the embedded PNG (or JPEG-2000) icon is now extracted directly.
• If you sync settings, your name shows up instead of a random email. The "Synced as" row used to show an opaque per-app privacy-relay address; it now shows your actual display name (falling back to the relay address only if no name is available).
• Release-readiness polish. Licensing docs, the supported-format counts quoted across the README/docs, and some duplicated internal code were reconciled so everything lines up; file renames during Convert/Resize are now atomic (no half-written output if something goes wrong mid-write).
• Screenshot capture fixes. A stray 1px window border and the invisible DWM resize border no longer sneak into --shot-style captures used for the app's own documentation screenshots.
• Updated the DjVu decoder dependency to pick up upstream fixes and trim unused transitive deps (no user-facing behavior change).