Zoom Loupe

Getting Started

1. Open Zoom.
2. Upload an image.
3. Use the Zoom slider to select a magnification level.
4. Click a location within the original image viewer.
5. Inspect that location in the magnification pane.

Viewer Layout

The Zoom tool contains two main panels.

The right viewer updates based on the selected zoom factor and focus point.

Zoom Range

The zoom range uses integer increments.

1× — Fit

At 1×, the whole image is fitted within the magnification viewer.

The label displays:

1× (fit)

Higher Zoom Levels

At zoom factors above 1×, the image is magnified relative to its fitted size.

For example:

2×
4×
8×

These factors describe enlargement relative to the fitted image scale, not necessarily a one-to-one relationship with physical display pixels.

Changing the Focus Point

Click inside the left image viewer to set the magnification focus.

The application records the clicked location and uses it to position the image in the right viewer.

The requested point is centered where possible.

Near image edges, positioning is constrained to keep the magnified image within the available viewing area.

Responsive Behavior

The Zoom viewer updates when the browser window or viewing panel changes size.

This helps maintain the magnification layout across different screen sizes.

Example Workflow

To inspect a small region of a photograph:

1. Upload the image.
2. Set Zoom to 4×.
3. Click the region of interest in the left viewer.
4. Inspect its enlarged representation on the right.
5. Move the focus point by clicking another location.

Common Uses

• Inspecting small visual details
• Reviewing image artifacts
• Checking alignment
• Examining graphic elements
• Evaluating image appearance at larger display sizes

Limitations

Zoom Loupe is primarily a viewing utility.

The supplied implementation does not include a separate export function for the magnified area.

It also does not implement image enhancement or resolution recovery.

Increasing zoom enlarges existing image information.

Troubleshooting

No Image Appears

Ensure the selected file can be decoded by the browser.

The Magnified Pane Shows the Entire Image

Check whether the zoom factor is still set to 1×.

The Wrong Area Is Magnified

Click the desired location again in the left viewer.

The Image Looks Blurry at High Zoom

Magnification cannot reconstruct detail that does not exist in the source image.

Use a higher-resolution original where available.

Tip: Zoom Loupe is useful for inspection, while Studio is the appropriate tool for editing and exporting image modifications.