Compression ratio
Computes the compression ratio (size before ÷ size after) and the percentage reduction — from file size before and after compression (in bytes).
Results
Enter data and click Calculate.
Często zadawane pytania
- When should I use compression ratio?
- When comparing before/after sizes (gzip, Brotli, Zstd) or planning storage and transfer.
- What does a high ratio mean?
- Stronger compression (fewer bytes after). Often costs more CPU — measure time too.
- What values are realistic?
- Text/HTML often 3–10:1; random or already-compressed data ≈ 1:1.
- What looks “bad”?
- After size larger than before (bad inputs) or ~1:1 with no real gain.