Frequently Asked Questions

Are screenshots uploaded?

No. The static site has no image upload API. OCR runs in your browser after the OCR library is fetched from jsDelivr.

Which formats and sizes work?

PNG, JPG/JPEG, and WEBP images up to 10 MB are accepted. Clear, upright images generally work best.

Why did it fail to find my calculation?

OCR may struggle with blur, small text, unusual fonts, handwriting, or clutter. Try a sharper crop, compare the recognized text, or type the expression manually.

Does it solve algebra or understand every receipt?

No. It extracts readable arithmetic expressions and some visible numeric totals. It is not a general AI problem solver and does not reliably interpret arbitrary algebra, percentage context, taxes, or invoice line items. Verify and edit its interpretation.

Where is history stored?

Up to five calculation summaries are stored in browser localStorage. Clear them with Clear history or browser site data settings.

Are ads or analytics active?

The current code does not display ads or run analytics. The reserved area is a layout placeholder only. See the Privacy Policy for third-party resources.

More guidance is on the How to Use page.