HEIC to Excel Converter

Why are the Excel files so large?

When extracting pixel data, each pixel's information (e.g., color values) is written into one or more cells in Excel. Since images can have millions of pixels, this quickly leads to very large spreadsheets. Excel is not designed for storing raw image data efficiently.

How can I reduce the Excel file size?

The most effective ways are:

• **Reduce "Max Image Width":** This downscales the image before processing, drastically reducing the number of pixels.
• **Increase "Pixel Sampling":** For pixel data extraction, this skips pixels, reducing the number of rows.
• **Choose "Color Analysis" or "Image Metadata" mode:** These modes extract summarized data, resulting in much smaller files than raw pixel data.
• **Disable "Color-Coded Cells":** While visually appealing, applying background colors to millions of cells adds significantly to file size.

Does it preserve transparency?

Excel cells do not natively support transparency. Any transparent areas in your HEIC image will be blended against a solid white background when converted to Excel cell colors.

Are my images uploaded to a server?

No, all image processing and Excel generation are performed directly in your web browser using JavaScript. Your files are not sent to any external server, ensuring your privacy and security.

Why does it take a moment to load HEIC files?

Browsers do not natively support HEIC. This tool uses a client-side library (`heic2any`) to decode the HEIC file into a format the browser can understand (like PNG) before processing its data. This decoding happens entirely in your browser and can take a few seconds depending on the file size and your device's performance.