Project files, saving, and recovery

The .wpr file is the editable drawing. Blueprints use the same file format.

Your drawing is saved wherever you choose in the save dialog. Redline keeps autosaves, local undo history, your blueprint library, and preferences separately on your computer.

Recent projects

Projects lets you search recent projects and preview a drawing before opening it. Removing a recent listing does not delete its project file.

Unsaved work

When you close or replace a drawing with unsaved edits, a comparison shows what has changed. Choose whether to save, discard, or return to editing. If saving fails, the drawing stays open.

The diff view is explained in Summary: Diff.

Autosaves

The project hub lists the five newest autosaves for each project. Moving, renaming, or copying a drawing keeps its project ID, so those files share the same autosaves. You can preview an autosave or compare it in the Diff view.

Recovering an autosave opens it without overwriting the original file. Save the recovered drawing to keep it.

What travels with the file

The .wpr stores the drawing and its embedded fonts, images, and SVGs. You do not need to send those assets separately. PDF, PNG, SVG, and HTML exports are saved wherever you choose; they do not replace the editable .wpr.

When saving local undo history is enabled, your undo/redo history stays on your computer so Ctrl+Z can pick up where you left off when you reopen. Sharing the drawing includes its assets, but not your local undo history.

Windows folders

Data and configuration both use %APPDATA%\Redline.

The cache uses %LOCALAPPDATA%\Redline.

macOS folders

Data lives in ~/Library/Application Support/Redline.

Configuration lives in ~/Library/Preferences/Redline.

The cache lives in ~/Library/Caches/Redline.

Linux folders

Data lives in ~/.local/share/Redline.

Configuration lives in ~/.config/Redline.

The cache lives in ~/.cache/Redline.

If you have set XDG_DATA_HOME, XDG_CONFIG_HOME, or XDG_CACHE_HOME, Redline uses a Redline folder inside that location instead of the corresponding default.