File Size Calculator
Estimate how much space you can save by compressing your files
100% Private & Secure: All compression happens directly in your browser. Your files never leave your device and are never uploaded to our servers. We only track anonymous statistics (file size and type) to improve our service - no actual file content is ever stored or transmitted.
File Information
50% (Lower quality)95% (Higher quality)
Compression Results
Enter file details to see compression estimates
How This Calculator Works
This calculator provides estimates based on typical compression ratios for different file types and quality settings. Actual results may vary depending on the specific content of your files.
Images
Compression rates vary by content complexity. Photos typically compress more than graphics with text.
PDFs
Results depend on content type - image-heavy PDFs compress more than text-only documents.
Videos
Compression effectiveness varies by video content, resolution, and original encoding quality.
Frequently Asked Questions
Common questions about our File Size Calculator tool and file processing