Windows

Download the Windows x64 or ARM64 installer and open ReShiki from Start. See installation.

ReShiki includes native drawing and chemistry tools; no Python or uv setup is required. The Windows/Office screenshots below are retained from the earlier Windows verification and may show older toolbar layouts. The current controls are illustrated throughout the other guides.

Use Windows shortcuts

Use Ctrl+N/O/S for new, open and save. Ctrl+Z undoes an edit; Ctrl+Y or Ctrl+Shift+Z redoes it. Tooltips show Windows shortcuts.

Open files in the running window

When ReShiki is already running, opening another drawing, for example by double-clicking a .rsk file, adds it as a tab in the existing window. If the file is already open, ReShiki switches to its tab. If the tab in front is an unchanged, empty Untitled drawing, the file opens there.

Each drawing opened from Office gets its own tab. Saving in that tab updates only the Office document it came from.

Copy editable drawings or pictures

Select objects and use Ctrl+C, then Ctrl+V to paste editable content within ReShiki. Ctrl+Shift+C copies an image; Import → Paste picture pastes a picture explicitly. Copy Image includes a transparent PNG and a standard Windows bitmap fallback with a white background. Keep a .rsk original for the complete drawing.

For desktop Word, PowerPoint and Excel, Copy supplies an editable ReShiki object. Double-click the pasted drawing to open ReShiki, edit it and press Ctrl+S. Keep Office open until ReShiki confirms the update, then save the Office document. If the destination chooses another format, use Paste Special → ReShiki drawing object. Install ReShiki on a receiving Windows computer to edit the object there. A portable copy registers its location when you copy.

The editable preview uses vector bonds and outlined text, with a transparent background. It stays smooth when enlarged over a colored slide or worksheet. To update an older embedded ReShiki preview, double-click it and press Ctrl+S, then save the Office document. PNG file export still uses a white background.

Excel adds a separate white object fill by default. Select the pasted object, press Ctrl+1, and set Colors and Lines → Fill → No fill to see the worksheet through it. Excel also controls the object’s outline.

Copy Image makes a static figure. Its SVG uses vector outlines to preserve atom-label positions. Use this for applications that only accept pictures. Pictures pasted by earlier versions remain pictures.

For a picture file, open Export → Figure and choose EMF for Office. It keeps the drawing’s physical size and turns text into outlines. SVG for Office gives an SVG with the same size and outlined text.

The .rsk original is editable on both Windows and Mac. Mac Office does not support the Windows OLE double-click workflow. Keep the original to edit and replace figures on a Mac; see clipboard platform boundaries.

Insert EMF pictures

Choose Import → Choose file…, or drop an .emf file on the drawing. The picture starts at the size recorded in the file. Resize, rotate, replace and copy it like any other picture.

The .rsk file keeps the original EMF together with a preview. EMF for Office export uses the original vectors; PNG, SVG, PDF and printing use a high-resolution preview. The picture’s contents, such as peaks, text or structures, cannot be edited as chemistry. On macOS and Linux, the drawing shows the preview and keeps the EMF for later use on Windows.

Print

Preview the sheet in Page setup, then use Ctrl+P or Export → Print…. Choose the printer, pages and copies in the Windows dialog. Select Microsoft Print to PDF to save printer output locally. Print selection prints a snapshot of the selected objects. Cancel leaves the drawing unchanged.

Performance

Use a release build for performance checks. Windows uses a direct 2D software renderer to avoid expensive GPU emulation on virtual machines and remote desktops. The idle timer fix is included in v0.4.0. See Windows development and verification for the tested scope and remaining hardware checks.