Effective date: May 29, 2026
DXF File Viewer ("the Extension") is a Chrome extension that lets users open, view, inspect, measure, and compare AutoCAD-compatible DXF (Drawing Exchange Format) and DWG files locally in their browser. This document explains how the Extension handles user data.
The Extension does not collect, transmit, sell, or share personal data with us or with third parties. DXF and DWG drawings are processed locally in your browser and are not uploaded to any server or cloud service.
Some viewer data is stored locally on your device so the Extension can provide features such as recent files, saved views, and viewer preferences. This local data stays inside your browser.
The Extension does not collect, request, or transmit any of the following:
- Personally identifiable information, such as name, email, phone, or address
- Authentication credentials, such as passwords, API keys, or OAuth tokens
- Financial or payment information
- Health information
- Location data
- Browsing history or web activity
- Personal communications
- Website content from pages you visit
- Device identifiers, IP addresses, or fingerprinting data
- Usage analytics or telemetry
When you open a DXF or DWG file in the Extension:
- The file is read locally by your browser using the standard File API.
- The file data is passed to the Extension's viewer page using local browser storage mechanisms.
- The drawing is parsed and rendered locally in your browser, including inside a Web Worker where needed for performance.
- The file is not uploaded to any server, cloud service, or third party.
To support the recent files feature, the Extension may store recently opened DXF/DWG files locally in your browser's IndexedDB storage. This lets you reopen a recent drawing from the Extension UI without selecting the file again. Recent file data remains on your device and is not transmitted by the Extension.
The Extension stores some data locally in your browser to provide its core viewer features:
- Viewer preferences, such as theme, original color mode, minimap visibility, coordinate display, and selected language
- Recently opened DXF files, including file name, file size, opened time, and local file data for the recent files list
- Saved views or bookmarks, including bookmark label, drawing position, zoom width, and creation time
- Temporary pending file data used to open a selected DXF in the viewer tab
This data is stored using standard browser storage APIs such as
window.localStorage and IndexedDB. It stays on your device. You can remove it
by clearing extension site data or browser storage in Chrome settings.
If you use the screenshot feature, the Extension may generate a PNG image from the current drawing view. The image may be downloaded to your device or copied to your clipboard only after you request that action.
The Extension's manifest declares no Chrome permissions ("permissions": []).
It does not request access to:
- Tabs or browsing history
- Active tab content
- Cookies
- Bookmarks
- Network requests
chrome.storage
The Extension does not use analytics providers, advertising networks, tracking services, or external APIs.
After installation, the Extension may open a welcome page hosted on GitHub Pages for onboarding. This page is separate from the Extension's DXF processing and does not receive your DXF files.
The Extension does not load or execute remote code. All JavaScript, CSS, fonts, localization files, and assets required by the Extension are bundled inside the Extension package and served locally from within Chrome.
The Extension does not knowingly target or collect data from children under the age of 13.
We do not sell, trade, or transfer user data to third parties.
This policy may be updated as the Extension evolves. When that happens, the effective date at the top will be updated.
For privacy questions or concerns, contact: