v1.1.0

Installer SHA-256: 3CE485553866CA8AC5B9D160CC28993FE8FB489AF21743BFBCE545666972FC56

Added

• Arrow-key nudging. With a sticker focused, the arrow keys move it 1 pixel
  at a time (hold Shift for ~10) — fine positioning the mouse can't do.
• Per-sticker unpin. The tray now has an "Unpin sticker" submenu listing
  each pinned sticker by name, so you can release just one. (A pinned sticker is
  click-through and can't reopen its own menu, so previously the only way back
  was the all-or-nothing "Unpin all stickers".)
• Right-clicking a sticker now focuses it, so the keyboard shortcuts keep
  working after you've clicked away to another window.
• The right-click menu shows a scroll-gesture legend (resize · opacity ·
  fine resize), which previously had no on-screen hint.
• The + / - resize keys now honor Ctrl for fine steps (5% instead of
  15%), matching Ctrl + scroll-wheel resize and what the README already
  documented.

Fixed

• A failed matte on the open/restore path no longer poisons the rest of the
  batch. If a model ran out of GPU memory while opening (or restoring)
  several images at once, its half-loaded session used to stay resident and
  every following sticker in that batch failed too. The session is now evicted
  on failure — matching the re-matte path — so the next attempt starts clean.
• A sticker could "stick" to the cursor after the mouse capture was lost
  mid-drag — e.g. Alt+Tab, or pressing S (save) while dragging. Drag state is
  now reset when capture is lost, so the next mouse move no longer teleports it.
• The "downloading model" notice no longer flashes shut during --resume
  when a cached cutout is restored before a model still needs downloading; it
  now stays up across the actual download instead of closing on the first
  cache hit.
• Picking a second matting model while one is still running is now ignored,
  so the on-sticker busy spinner can't clear while inference is still going.
• --resume no longer forgets a sticker's model when its cached cutout is
  missing. Previously the restore fell back to the default model and wrote that
  default back to session.json, permanently losing the original choice; the
  intended model is now preserved, so a later restore reuses it once the cutout
  is cached again.
• Closing a sticker mid-drag (Esc, middle-click) no longer races the drag
  handler into a spurious "Something went wrong" notification.
• Clipboard captures can't collide. Pasted images now get a unique suffix, so
  two pastes in the same millisecond can't overwrite each other (which would have
  orphaned an open sticker's cached cutout).
• The single-instance handoff read is now time-bounded, so a stray client that
  connects without sending data can't pin the listener and block "Open as sticker".

Internal

• Added a test suite and CI. A small xUnit project covers the contract-critical
  pure logic (matte cache-key derivation, tolerant session parsing, the bilinear
  resize mapping, and the model registry), and a CI workflow now builds both
  projects, runs the tests, and guards against version drift (csproj/installer/
  manifest) and image-extension-list drift on every push and PR.

Full Changelog: v1.0.4...v1.1.0

v1.0.4

Full Changelog: v1.0.3...v1.0.4

Added

• Model-download integrity. Each downloaded model is verified against a pinned SHA-256 before it's installed, so a corrupted or substituted file is rejected and re-fetched instead of being loaded into the runtime.
• Per-monitor DPI awareness (Per-Monitor V2). Stickers stay sharp and hit-test correctly when dragged across monitors with different display scaling, instead of being bitmap-stretched.
• Stickers remember their model across a restore. A restored sticker comes back with the model it was matted with when that cutout is still cached (instant); otherwise it falls back to the default model, so --resume never kicks off a slow re-matte at login.

Fixed

• Matte no longer races session teardown. All matting is serialized through one gate, so switching models, trimming GPU memory, or evicting an idle session can no longer dispose an ONNX session mid-inference (which could crash the app). Model load/download also no longer holds the session lock, so quitting during a first-run download won't hang.
• Single-instance pipe is isolated per session, with a current-user-only ACL and a backoff on the listener — a second login session on the same machine can no longer collide with it or spin the CPU.
• Clipboard captures are pruned instead of piling up forever under ~/.sticker_cache/clipboard.
• Session writes are debounced off the UI thread, so rapid resize/opacity changes no longer rewrite session.json on every notch; the session is flushed synchronously on exit.
• Crash resilience. A stray UI-thread exception is now surfaced and survived instead of taking down the tray and every open sticker; a fatal background error still flushes the session first so nothing is lost.
• Rotate menu labels no longer advertise R / Shift+R next to the 90° items (those keys rotate 15°, the menu items 90°).
• "Close all stickers" can't get stuck suppressing session saves if a window throws while closing.

v1.0.3

Full Changelog: v1.0.2...v1.0.3

Added

• Automatic GPU selection. DirectML now targets the highest-VRAM adapter instead of blindly using DXGI adapter 0, so machines with switchable graphics (laptop iGPU + discrete GPU, or a desktop with the iGPU enabled) use the right card automatically. Override with STICKER_DML_DEVICE if needed.
• CPU fallback for heavy models. When a model runs out of GPU memory — during inference or while loading — Sticker first frees other warm GPU sessions and retries on the GPU, then offers to retry on the CPU (same result, slower) before giving up. STICKER_FORCE_CPU=1 always skips the GPU.
• STICKER_BIREFNET_SIZE to lower BiRefNet's input resolution (e.g. 768, 512) and cut its memory footprint.
• Model download progress. The first-use download now streams with a live progress bar (MB / percent) instead of an opaque wait.
• On-sticker busy spinner shown while (re-)matting — on GPU and during the slower CPU pass — so a long run never looks like a frozen app.
• "Clear matte cache…" tray item that frees cached cutouts without touching your session, clipboard captures, or downloaded models.
• Cache-aware model picker. The right-click "Matte with" entries reuse a previously computed result instantly; "Re-process current (ignore cache)" forces a fresh pass.

Changed

• Context menu now covers all supported image types (.jpg .jpeg .png .webp .bmp .gif). Previously it registered under the image PerceivedType, which .webp (and others) often lack — so it only appeared for .jpg. It's now registered per extension.
• README: rewritten GPU / troubleshooting guidance, a full environment-variable reference, and clearer context-menu and caching docs.

Fixed

• Atomic model downloads. Downloads land via a temp file and rename, so an interrupted download no longer leaves a corrupt .onnx that crashes on every launch.
• Failed matte no longer poisons later ones. A model that errors mid-run is now disposed and evicted, freeing its reserved VRAM so subsequent re-mattes (even of other models) aren't starved.
• Oversized images are rejected with a clear message instead of overflowing the pixel-buffer allocation and crashing.
• Concurrent re-mattes of the same image+model are serialized — no more duplicate inference or racing writes to the same cache file.
• Clearer clipboard errors. "Paste as sticker" distinguishes a busy/locked clipboard from a genuinely empty one.
• Session restore is resilient to a malformed entry — it skips the bad one and restores the rest instead of dropping the whole session.

v1.0.2

Full Changelog: v1.0.1...v1.0.2

fix: move autostart off the Run key to a Startup-folder shortcut

• Windows Defender's ML heuristic (Program:Script/Wacapew.A!ml) flagged the installer because it wrote HKCU...\CurrentVersion\Run for login autostart — the textbook malware persistence location. Switch both the installer and the in-app "Start with Windows" toggle to a per-user Startup-folder .lnk, the Explorer-managed mechanism that scores as benign. The toggle writes the .lnk via IShellLink (no Run-key write at runtime either).
• Rename the --restore launch flag to --resume to drop the recovery/ransomware-flavored token; --restore is kept as a legacy alias so pre-existing autostart entries keep working.

v1.0.1

✂️ Sticker 1.0.1 — first public release

Turn any image into a floating desktop sticker — background removed by on-device AI, in one right-click.

📦 Install

Download StickerSetup-1.0.1.exe below and run it. No admin rights needed — it installs per-user and adds "Open as sticker" to your right-click menu (under Show more options on Windows 11).

⚠️ Windows SmartScreen will warn you because this release isn't code-signed yet — click More info → Run anyway. Signing is on the roadmap.

The first sticker you make triggers a one-time AI model download (~180 MB). After that, everything runs fully offline.

✨ Highlights

• One right-click — any image in Explorer becomes a floating, draggable cutout
• 100% local AI — background removal on your GPU via DirectML (CPU fallback); no uploads, no accounts
• True click-through — your mouse passes through transparent areas to whatever's underneath
• Paste as sticker — Ctrl+Alt+V turns whatever's on your clipboard into a sticker
• Session persistence — stickers survive reboots and come back exactly where you left them
• Pin mode — make a sticker fully click-through and forget it's a window at all
• Three swappable AI models — fast general-purpose (default), people/portraits, or maximum quality; re-matte any sticker from its right-click menu
• Rotate, flip, resize, opacity, save-as-PNG — all from the keyboard or scroll wheel

🛠️ For tinkerers

Building from source still gets you the extras: the top-level Win11 context-menu entry (sparse MSIX package, needs Developer Mode) and the original Python prototype. See the README.

🐛 Known limitations

• Installer build is x64 only for now (ARM64 planned)
• Unsigned — expect the SmartScreen prompt above
• The installer registers the classic context-menu entry only; the top-level Win11 menu item requires Developer Mode and the setup_modern_menu.ps1 script

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Full changelog: first release 🎉