Sun Diagram is an extension for creating 3D sun paths and analyzing sunlight in architectural projects.
The plugin has 04 core features.
1. Create Sunpath (Feature 1)
Generate a 3D Sunpath by entering your project’s location
Choose input methods:
Option A – From Model: Use the coordinates already embedded in your SketchUp model (via File -> Add Location).
Option B – Manual Input: Enter latitude and longitude directly. Coordinates can be copied from Google Maps (format example: 26.2649, -81.6255).
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⭐Smart DST Engine : Enable Daylight Saving Time (DST) for highly accurate solar analysis in regions with seasonal time changes (Premium Feature).
Why is the DST feature important?
See How It Works ▶️
2. Shadow Analysis (Feature 2)
Simulate shadows and sun positions instantly with our real-time interactive UI.
- Real-Time Sliders: Check your desired months and drag the time slider to update shadows instantly—no guessing or clicking 'Apply'.
- Custom Dates: Select any specific day of the month (1-31) for pinpoint accuracy, or stick to the standard Solstices and Equinoxes.
- On-Screen Info (HUD): Display real-time solar data (Location, Date, Time, UTC) directly in your viewport.
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Automate your workflow and prevent UTC errors with built-in Daylight Saving Time (DST) support.
See How It Works 
3. Batch Export Shadows (Feature 3)
Export shadow sequences with a single click to create stunning time-lapse animations.
- Automated Workflow: Select your time ranges, and let the system generate all images automatically based on your Shadow Analysis settings.
- Multiple Resolutions: Export in standard Landscape (FullHD, 2K, 4K) or Vertical formats (9:16) perfectly sized for social media (Reels, TikTok, Shorts).
- HUD Control: Choose to include or remove the On-Screen Info watermark from your final exported frames.
- Presentation Ready: Combine exported images into a video (CapCut, Premiere, After Effects) or merge into a PDF to help clients instantly understand your lighting design.
See How It Works
4. Diagram Styles (Feature 4)
Find the perfect visual style for your project — instantly, with just one click.
- One-Click Activation: Load a style to automatically adjust SketchUp graphics, edge settings, and Sun Path layers (tags).
- Premium Library: Unlock 09 professional diagram styles and 03 dynamic compass designs (Pro/Studio).
The Standard (Free) version includes 02 clean, beautiful styles that fit most basic presentation needs.
See How It Works
⭐This advanced feature is exclusively available in Sun Diagram Pro or Studio.
What You Can Do with Sun Diagram:
- Shadow diagram
- Solar study
- Shadow analysis
- and more
Explore Diagrams Created with Sun Diagram
Get Sun Diagram:
Sun Diagram (Standard)
Basic tool for students, learning purposes, and non-commercial projects.
✔️Generate 3D Sun Path: Scientifically accurate from coordinates.
❌ No DST Support: Base UTC time only.
➖ Core Shadow Analysis: June & December only (Any day & hour for Solstice testing).
➖ Standard Batch Export: June & December only (Locked to FullHD 1080p).
➖Starter Style Library: 02 clean, basic diagram styles.
➖ Support: Critical bug fixes only.
- Available on SketchUp Extension Warehouse
- Alternative download via Google Drive
Sun Diagram (Studio)⭐
The ultimate convenience. All the power of Pro, fully automated via SketchUp.
✔️ Generate 3D Sun Path: Scientifically accurate from coordinates.
✔️Smart DST Engine: Automatic Daylight Saving Time adjustment.
✔️ Full Shadow Analysis: All 12 Months (Any day & hour, full solar mastery).
✔️Advanced Batch Export: All 12 Months (Unlock 2K, 4K, Vertical 9:16 formats, 100% Watermark-Free).
✔️Premium Style Library: All 09 Professional Styles
Updates: Auto-Update (via SketchUp Extension Warehouse).
$15 USD/year (Billed annually)Test drive the complete workflow risk-free. Cancel anytime.
- Hassle-Free Activation: Linked directly to your SketchUp Trimble ID.
Sun Diagram (pro)
For professional architects, commercial reports & client presentations. Pay once, own forever.
✔️ Generate 3D Sun Path: Scientifically accurate from coordinates.
✔️Smart DST Engine: Automatic Daylight Saving Time adjustment.
✔️ Full Shadow Analysis: All 12 Months (Any day & hour, full solar mastery).
✔️Advanced Batch Export: All 12 Months (Unlock 2K, 4K, Vertical 9:16 formats, 100% Watermark-Free).
✔️Premium Style Library: All 09 Professional Styles
Updates: Free Lifetime Updates.
Only $45 USD (One-time payment). Buy now on Gumroad.
7-day money-back guarantee. 100% Offline Capable after activation. License key included.
Sun Diagram is developed by Febhouse.
The Free version is officially available on SketchUp Extension Warehouse.
The Studio version offers auto-updates & subscription convenience via SketchUp Extension Warehouse.
The Pro version is distributed via Gumroad, offering lifetime ownership & secure payment.
📩 Support: info@febhouse.com (response within 24h)
SUN DIAGRAM v4 The biggest update
Compatibility: SketchUp 2020+ on MacOS & Windows
Versions: 4.0.2 (20260401 Updated) 
Highlights of this new update:Flexible 3D Sun Path & Sky Dome (New): Generate a dynamic 3D solar dome showing the sun’s trajectory across all 12 months. Effortlessly analyze critical times like Solstices and Equinoxes, or customize it for any specific day of the year.Instant Shadow Control & Smart DST: No more manual UTC guessing. Our system automatically calculates the correct Daylight Saving Time offsets. Use the new interactive dashboard to slide through time and see shadows update instantly.One-Click Batch Export: Save hours of manual work. Automatically generate high-resolution (up to 4K) shadow sequences with a single click—now fully supporting your custom On-Screen HUD overlays.
Legacy Changelog
Versions: 3.5.1 (2026-02-11)
✔️ Smart Time Zone Engine: Removed the hardcoded UTC+8 override for East Asia, allowing for accurate geometric time calculations.
✔️ Stability: Optimized Undo/Redo stack performance for Shadow Analysis.
✔️ Security Patch: Enhanced handling of special characters in file paths (Unicode/Windows paths)
✔️ Bug Fixes: Fixed broken external links (Website/Email) in the About dialog
V3.5 (2026-02-06)
✔️ Smart Time Zone Engine: Enhanced algorithm with “Regional Overrides” to accurately handle locations where political time differs from solar time (e.g., Western Europe, China).
✔️ Flexible Time Zone Setup: New global time zone dropdown menu; users can now choose between Auto-detection or Manual override for projects located near time zone borders.
✔️ Vertical Resolution Support (9:16): Added vertical export options (FullHD_V, 2K_V, 4K_V) specifically designed for mobile presentations and social media (TikTok, Reels, Shorts).
✔️ Modernized UI/UX: fully optimized for a seamless experience in SketchUp 2026
V3.4 (2025-11-25)
✔️ 3D Sun Path: Added a yellow 3D Dome surrounding the Sun Path.
✔️ Assigned the Dome to a new tag named Feb_Dome.
V3.3 (2025-11-14)
✔️ Improved Style: Added Style 09 Pro
✔️ 3D Sun Path: Text on the Sun Path is now bold for better visibility.
V3.2 (2025-09-16)
✔️ Improved Style: These updates make your sun visuals clearer and models easier to view, with no changes to how the plugin works.
V3.1 (2025-08-16)
✔️ Updated the control panel UI for clarity.
V3.0 (2025-07-30) Major Update
✔️ Improved interface with a new toolbar
✔️ Optimized performance and faster image export
✔️ New feature: Style Library for your diagrams with instant style switching
✔️ Fully redesigned user interface.
V2.4 (2025-04-19)
✔️ Sun Path now displayed with dashed lines in any SketchUp STYLE.
✔️ Added Compass Style 2 and 3, fully vector-based and selectable in the Tag (layer) panel.
✔️ Export images at unlimited resolution – ensuring sharp, high-quality visuals for printing and presentations.
Or install Sun Diagram directly from Extension Warehouse in SketchUp.
Here’s a quick step-by-step guide (under 2 minutes): https://www.youtube.com/shorts/IHjVPbIapvw
How to use Sun Diagram in SketchUp
▶ Watch a 2-minute real workflow demo
See how Sun Diagram is used in a real SketchUp workflow for sunlight and shadow analysis
Advanced tutorial: Real Project Site Analysis Using Sun Diagram and Dynamic Symbols
Learn how to analyze a real site using Sun Diagram together with Dynamic Symbols for professional projects
Frequently Asked Questions & Documentation
If you run into any problems while using or installing, please check the FAQ first.
What is Sun Diagram used for?
Sun Diagram is an advanced SketchUp extension that allows architects to analyze sunlight, simulate seasonal shadow movement, and accurately understand daylight conditions directly inside their 3D models
Which versions of SketchUp are supported?
The plugin supports SketchUp 2020 and above on both Windows and macOS.
Can I use the plugin for commercial projects?
Yes, all versions (Free, Studio, and Pro) are permitted for commercial work and client projects.
Where can I download free sample files that use this plugin?
You can download free sample files at our official website (ArchiDiagram.com) or via our Instagram highlights/reels (@febhouse_com). These files can be opened directly in SketchUp without needing the plugins installed beforehand, making them perfect for exploring the final results
Why does the default Sunpath only show specific months (June, Dec, March/Sep)?
By default, Sun Diagram highlights the 4 most critical, internationally recognized dates for architectural solar analysis to ensure professional compliance without visually cluttering your workspace:
June 21 & Dec 21 (Solstices): Represent the most extreme sun positions (highest/lowest), generating the shortest and longest shadows of the year.
March 21 & Sept 21 (Equinoxes): Represent the exact midpoints when the sun rises due east and sets due west. Every other day of the year falls strictly within these visual boundaries.
Need to analyze a different specific date? We’ve got you covered! While the Standard (Free) edition focuses on the foundational Solstices, upgrading to Sun Diagram Studio or Pro unlocks Full 12-Month Analysis and Custom Date Selection. You can effortlessly select any specific day of the year (e.g., August 15th) to meet strict local building codes or create highly tailored client presentations.
I used "Create Sun Path from Coordinates," but I only see sun rings and time labels. What went wrong?
This usually happens when your SketchUp file contains excess “junk” data (hidden geometry, unused components, or broken tags) that interferes with the plugin. To fix this, simply copy your 3D model (Ctrl+C), open a completely new, blank SketchUp file (Ctrl+N), paste the model, and run the tool again
Are there different versions of Sun Diagram?
Yes, we offer three options:
- Free Version: Officially available on the SketchUp Extension Warehouse.
- Studio Version: Offers auto-updates and subscription convenience via the Extension Warehouse.
- Pro Version: Distributed via Gumroad, offering lifetime ownership and secure payment
What is the difference between the Studio and Pro versions?
Both versions have identical features (DST Support, Shadow Analysis, Batch Export, Style Library).
Where is my License Key for the Studio version?
You do not need a License Key for the Studio version. It uses SketchUp’s official licensing system, meaning your license is directly linked to the email address used for your SketchUp account.
I already have the Pro version. Do I need to subscribe to Studio?
No. Your Pro license is valid for a lifetime and includes free updates. The Studio version is simply an alternative option for users who prefer subscriptions
Can I use the plugin on multiple machines or switch computers?
- Studio Version: Yes. Simply log in to SketchUp on your new computer and install the extension from the Warehouse to activate it automatically.
- Pro Version: The lifetime license is for one user. You may install it on multiple personal machines (e.g., a desktop and a laptop) for your own use. However, concurrent use by different people or sharing the license key is strictly prohibited
Can I share the plugin with colleagues?
No. Licenses are issued to individual users. Redistribution, resale, or sharing the plugin files is not permitted
How do I install the Sun Diagram plugin?
- Free/Studio: Open SketchUp > Extension Warehouse > Search for “Sun diagram” (by Febhouse) > Click “Install” or “Try or Purchase”.
- Pro: Open SketchUp > Extension Manager > Click “Install Extension” and choose the downloaded
.rbzinstaller file from your ZIP folder
What do I receive after purchasing Sun Diagram Pro?
After your purchase on Gumroad, you will receive a ZIP folder containing the .rbz installer file, installation instructions, a user guide, and a license key (also emailed to you)
How are purchases processed?
All Pro purchases are handled securely by Gumroad.com. Febhouse does not store your payment details.
Do you offer refunds?
Yes, we offer a 7-day money-back guarantee. If the Pro version doesn’t work on your setup, please contact us at info@febhouse.com. We will troubleshoot with you or issue a prompt refund (minus a small ~10% payment processing fee)
Does the Studio version require an internet connection?
It requires an internet connection for installation and periodic license checks by SketchUp. If you need a strictly offline solution, we recommend the Pro version.
I installed it, but the interface doesn't show. What should I do?
Ensure you are using SketchUp 2020 or newer, and verify that “Extensions” are enabled in your SketchUp Preferences. Contact support if the issue persists.
When I try to enter the code, I get an Activation Error: "SSL_connect". How do I fix this?
This error is caused by local network firewalls blocking the license verification server. To fix it:
- Check that your computer’s date and time are correct.
- Connect your computer to a mobile hotspot or different WiFi network temporarily to bypass corporate firewalls. Once activated, you can return to your standard network.
- Ensure you are running an official version of SketchUp
Do I need to manually turn DST on and off when analyzing different months?
No, you don’t! Sun Diagram features a Smart DST automation. If your project’s location observes Daylight Saving Time, simply turn the DST toggle ON. The plugin will automatically check the date you are analyzing. If the date falls within the summer DST period, it applies the 1-hour offset. If you switch to a winter date, it automatically ignores the offset. You only need to set it once!
How do I know if I should turn the DST toggle ON or OFF for my project?
It depends on your project’s location:
Leave it OFF: If your project is in a region that never uses DST (such as most of Asia, Africa, and parts of South America).
Turn it ON: If the region observes DST (like most of North America and Europe).
Tip: If you are unsure, you can quickly verify your city’s DST rules on websites like TimeAndDate.com.
If you didn’t find the answer you were looking for, feel free to reach out.
We’re here to help.
Developed by Febhouse Studio
Sun Diagram is developed by Febhouse, Learn more at ArchiDiagram.com
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