Settings & Preferences

Open settings with Ctrl+, (or Cmd+, on macOS). Settings are organized into six tabs: Interface, Defaults, Account, Performance, Privacy, and About. Most settings take effect immediately. UI Scale requires clicking Apply, and changes to Processing Threads take effect after restarting the app.

Interface

Visual preferences for the editor, canvas, and display.

Theme

Setting	Default	Options
Color Scheme	Violet	Emerald, Violet, Ocean, Rose, Amber, Graphite
UI Scale	1.0x	Scale the entire interface (0.5x — 2.0x). Requires Apply.

Node Graph

Setting	Default	Options
Wire Style	Curved	Curved, Straight, Rounded, Right Angle
Snap to Grid	On	Snap nodes, groups, and sticky notes to a grid when moved, resized, or created
Grid Spacing	16 px	Grid cell size (8 — 64 pixels)

Display

Setting	Default	Description
Display Color Management	On	Reads your monitor’s ICC profile and applies color correction so previewed colors match exported colors. Zero overhead on sRGB monitors.
Show Full Path in Title Bar	Off	Show the complete .arcb file path instead of just the filename.
Show Panel Scrollbars	On	Show scrollbars in the node library and properties panels. When off, panels use thin overlay scrollbars that appear only when content overflows.
Show Memory Usage	Off	Show RAM, disk cache, and VRAM usage in the status bar.
Show Generation Costs	Off	Show session and per-file AI generation costs in the status bar.

Tooltips

Setting	Default	Options
Show Tooltips	On	Show or hide hover tooltips
Tooltip Delay	0.4 s	Delay before a tooltip appears (0 — 2.0 seconds)

You can also middle-mouse drag to scroll in the node library and properties panels.

Defaults

Project defaults and file behavior.

New Project Defaults

Default dimensions for new canvases. Existing graphs keep their own canvas size.

Setting	Default	Range
Canvas Width	1024 px	1 — 8192 (slider), up to 16384
Canvas Height	1024 px	1 — 8192 (slider), up to 16384

Behavior

Setting	Default	Description
Reopen last file on startup	On	Automatically reopen the most recent graph on startup

Auto-Save

ArcBrush periodically saves a backup of your work. If the app closes unexpectedly, it offers to restore the last auto-saved state on next launch.

Setting	Default	Range
Enable Auto-Save	On	Toggle automatic backups
Interval	120 s	How often to save (30 — 600 seconds)
Max Snapshots	5	Number of rotating backups to keep (1 — 10)

File Association

Register or remove the .arcb file type association so double-clicking a project file opens ArcBrush. On macOS, registered files show the ArcBrush document icon in Finder.

Preferences Folder

Opens the per-user folder where ArcBrush stores its settings, logs, and autosaves. You usually don’t need to touch this folder, but it’s useful when you’re attaching logs to a bug report, migrating settings to a new machine, or clearing recovery data.

Default location

Platform	Path
Windows	%APPDATA%\ArcBrush\ (typically C:\Users\<you>\AppData\Roaming\ArcBrush\)
macOS	~/Library/Application Support/ArcBrush/
Linux	~/.config/arcbrush/

The folder is created automatically the first time ArcBrush runs.

What’s inside

Item	What it is
settings.json	Your in-app preferences (theme, default canvas size, AI concurrency, etc.). Saved automatically whenever you change something in Settings & Preferences.
window.json	The last window position, size, and monitor, used to restore your layout on launch.
logs/	Rolling application logs (arcbrush_<timestamp>.log). Attach the most recent file to bug reports. Older logs are pruned automatically.
generation_log.jsonl	One-line-per-entry history of AI generations, including the model, cost, and timestamp. Powers the Generation Log window.
autosave/	Recovery snapshots of open documents, plus an index.json. ArcBrush prompts to restore from here after a crash.
unsaved_data/	Image cache for graphs you haven’t saved yet, so unsaved work survives a restart.
clipboard_images/	Temporary storage for images copied between graphs.
arcbrush.cfg	Optional. An INI-style file for advanced overrides (custom proxy URL, performance flags, dev toggles). ArcBrush does not create this for you. Add it only if a setting tells you to.

Safe to delete

• logs/, unsaved_data/, and clipboard_images/ regenerate on the next launch.
• Deleting autosave/ discards crash-recovery snapshots for documents that haven’t been saved as .arcb files.
• Deleting settings.json resets ArcBrush to defaults.
• Don’t delete the folder while ArcBrush is running.

Account

Sign in, view your credit balance, purchase credits, or sign out. AI features require an account, but all non-AI features work without one.

Performance

Hardware and processing settings.

Setting	Default	Description
Max Concurrent AI Requests	3	Number of AI generations that can run in parallel (1 — 8)
Processing Threads	0 (auto)	Number of CPU threads for node evaluation. 0 = automatic. Requires restart.
GPU Acceleration	On (auto-detected)	Use OpenCL and compute shaders for accelerated processing when a compatible GPU is available

Privacy

Setting	Default	Description
Send anonymous telemetry	On	Send anonymous usage statistics to help improve ArcBrush. No personal data, prompts, images, or file paths are collected.
Check for updates on startup	On	Check for new versions when ArcBrush launches

An anonymous Install ID (random, not linked to your account) is shown at the bottom of this tab.