Dark Mode
Dark Mode
Say goodbye to blinding white screens. Dark Mode gives you effortless, one-click control over document canvas colors, cell backgrounds, contrast-optimized fonts, and subtle spreadsheet borders — with blazing-fast bulk formatting that applies in milliseconds.
Google Workspace lacks native dark canvas themes. Browser extensions break colors and invert charts. Dark Mode is the native solution.
Working late or managing extensive spreadsheets under bright white document backgrounds causes severe digital eye fatigue:
Dark Mode modifies document and cell formatting natively via Google Apps Script without external servers:
Three effortless steps to transform your workspace in seconds.
Select from 10 professionally curated palettes including Catppuccin, Dracula, Nord Dark, GitHub Dark, and Tokyo Night.
Apply to just your active tab or across all sheets at once. Keep subtle dark gridlines enabled so boundaries remain clear.
Flip the master switch. In ~50ms your canvas converts to smooth dark mode with zero formulas or data altered.
Carefully balanced for maximum contrast, zero glare, and comfortable extended reading.
Packed with advanced features designed specifically for spreadsheet analysts and document writers.
Applies formatting across thousands of cells in milliseconds using optimized native batch APIs. Zero browser lag or page freezing.
Changes the entire page canvas background via Google Docs API Page Setup—not just text highlights. Margins, headers, and canvas stay completely dark.
Custom dark border engine keeps spreadsheet cell boundaries crisp across the entire sheet. New rows typed below data stay clean and bordered.
Keep your custom-highlighted cells or colored text untouched. Only changes default black & white text while preserving intentional highlights.
Switch themes on your current sheet only or apply across all tabs in your spreadsheet simultaneously with a single click.
The sidebar automatically detects the active tab and reflects its theme and mode dynamically as you navigate between sheets.
Most dark mode tools in Google Docs only apply a dark highlight over individual words, leaving page margins and blank lines bright white.
Dark Mode integrates directly with Google Docs API to update the underlying Document Page Setup background color. The entire physical page canvas, margins, and body turn dark seamlessly.
Your spreadsheet data, document text, and proprietary models never leave Google's encrypted infrastructure.
All theme formatting logic executes entirely inside Google Apps Script on your active document session:
Built strictly according to Google Workspace Marketplace guidelines:
Start with a 3-day free trial. Continue with a yearly membership on Gumroad.
Everything you need to know about Dark Mode for Google Sheets and Docs.
Absolutely not. Dark Mode strictly modifies visual formatting properties—specifically cell backgrounds, font colors, and grid borders. Your formulas, calculation engines, macro scripts, and conditional formatting rules remain 100% untouched.
Yes! Dark Mode is a universal Google Workspace Editor Add-on. When opened in Google Docs, it integrates with the Google Docs Page Setup API to darken the entire document canvas (margins, headers, and body), not just individual lines of text.
Yes. Because Dark Mode applies native Google Workspace color styles directly to your cells and canvas, anyone opening the spreadsheet or document will see the dark theme. When you're ready to share or print, clicking Light Mode restores the original formatting instantly.
Under the collapsible Advanced Options in the sidebar, you can enable "Keep custom font colors" and "Keep custom background colors". When active, Dark Mode inspects cells and protects intentional text highlights (such as yellow markers or status badges), only adjusting default black/white elements.
When you first open the Dark Mode sidebar, a 3-day unrestricted free trial begins automatically. You have full access to all 10 designer palettes, bulk override, gridline controls, and multi-sheet scopes without needing to enter a license key.
After purchasing from Gumroad (numbrate.gumroad.com/l/darkmode), copy your license key from your receipt. In Google Sheets or Docs, go to Extensions → Dark Mode → 🔑 License & Activation (or open the License tab in the sidebar), paste your key, and click Activate License.
Have a question, feature request, or need help with license activation? Our engineering team is here to assist.
✉️ numbrate@gmail.com