Are my files uploaded to a server?

No. Calcora file tools process everything locally in your browser using JavaScript. Your files never leave your device.

What is the maximum file size supported?

File size limits depend on your browser and device memory. Most modern browsers can handle files up to 100MB+ without issues.

What file formats are supported?

We support PDF, JPG, PNG, SVG, ICO, and WebP formats across our various file tools. Each tool page lists its specific supported formats.

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Favicon Generator & Preview

Quick Answer: Our Favicon Generator & Preview allows you to process documents and images safely in your browser. Unlike other online converters, we do not upload your files to our servers; everything is handled locally using your computer's resources for 100% privacy and lightning-fast speed.

Convert your branding into a complete icon set. Generate and preview icons for browsers, mobile home screens, and PWA.

📁 Upload Branding

Select Logo (Square is best)

👁️ Live Browser Preview

New Tab

https://calcora.site

⚡ Generated Icons

Empty

FAVICON.ICO

32x32

APPLE-TOUCH

180x180

ANDROID-CHROME

512x512

📖 How it Works & Guide

This tool is designed to be fast, private, and easy to use. All calculations and processing happen directly in your browser.

Input: Enter your data or upload the required file into the designated input area.
Process: Click the primary action button to trigger the instant calculation or conversion.
Result: Review the output and use the copy button to save your results to the clipboard.

Learn more: MDN File API | Web.dev File Handling

Pro Tip: Processing files client-side is not only safer but often faster than uploading large documents, especially if you have a limited upload speed. Your privacy is our priority.

Note: Your data never leaves your device. We prioritize your privacy and security.

💡 About favicon generator

Professional-grade favicon generator tool designed for accuracy and privacy. Calcora provides expert-built utilities entirely free of charge with zero data collection.

All calculations happen instantly and locally within your browser, ensuring your data remains absolutely private.

❓ Frequently Asked Questions

Is my data stored on your servers?

No. Calcora tools run 100% client-side. No data is uploaded or stored on any external server.

Is this service free?

Yes, all tools on Calcora are completely free to use without any account or subscription.