Mm↔in Converter

Short description:
- Convert mm ↔ inch instantly in a popup or via right‑click, and copy results as text or images.

Long description:
- Quickly convert between millimeters and inches directly from the browser toolbar popup.
- Prefill from right‑click: convert selected text via "Convert selection (mm↔in)".
- See results in Decimal Inches, Fractional Inches (1/16, 1/32, 1/64), and Feet + Inches, side by side.
- Copy results as text or export as image for sharing or documentation.
- Works entirely offline; English‑only UI.

Key features:
- Popup converter with precision and rounding controls.
- Fraction denominators: 1/16, 1/32, 1/64.
- Feet + Inches display with fraction formatting.
- Right‑click integration to capture and convert selected text.
- Copy results as text or image.
- AWG, drill bits, paper sizes, socket sizes quick access.
- Batch conversion and chart pages for frequently used values.
- Offline conversion; no network requests.

Permissions:
- ContextMenus: Provides a right‑click action to prefill the popup with selected text.
- Storage: Stores recent selection (seedText) locally to improve UX.
- No host permissions, no Scripting, no ActiveTab, no ClipboardWrite.

Privacy:
- No tracking. Conversion runs locally. No data is sent to external servers.

Injection policy:
- None. The extension does not inject content scripts; conversion happens in the popup UI.

Support and links:
- Common conversions: https://mmtoinches.im/common-mm-to-inches-conversions/
- Fraction: https://mmtoinches.im/mm-to-inches-fraction/
- Feet + Inches: https://mmtoinches.im/mm-to-inches-feet/
- Chart: https://mmtoinches.im/mm-to-inches-chart/
- Batch: https://mmtoinches.im/mm-to-inches-batch/
- Privacy policy: https://mmtoinches.im/privacy-policy
- Support email: support@mmtoinches.im

Keywords:
- mm, inch, inches, converter, fraction, feet, AWG, drill bit, paper size, socket

Data usage:
- No data collected. All conversions run entirely on‑device.
- Uses `chrome.storage.session` (preferred) or `chrome.storage.local` to store only the last selected text (seedText); no Chrome Sync, no analytics, no tracking.
- No network requests are made to developer servers.

Privacy practices:
- Data collection: None; we do not collect or transmit user data.
- Data sharing: None; no third‑party sharing or selling.
- Local storage only: last seed text is stored on the device to prefill the popup; no converter preferences are stored.
- Data location: On‑device (`chrome.storage.local`), cleared when the user resets or uninstalls the extension.
- Security: Minimal retention, no personal data, and no cross‑site tracking. All processing happens locally in the browser.