Efficient Compression Tool (or ECT) is a C++ file optimizer. It supports PNG, JPEG, GZIP and ZIP files.
All tests were run on OS X 10.11 using an i5-2500S and clang.
File: enwik8, 100,000,000 bytes, compressed into gzip format
| Compressor | File Size | Time |
|---|---|---|
| gzip -9 | 36,475,811B | 6.2s |
| zopfli -i1 | 35,139,225B | 1m 6.4s |
| ECT -2 | 35,019,083B | 16.9s |
| zopfli -i5 | 35,014,777B | 1m 56.2s |
| ECT -3 | 35,012,378B | 18.3s |
| zopfli -i15 | 34,987,258B | 4m 3.2s |
| ECT -4 | 34,964,155B | 22.5s |
| ECT -5 | 34,942,811B | 28.9s |
| ECT -6 | 34,940,747B | 49.7s |
| ECT -7 | 34,938,252B | 1m 7.9s |
| ECT -8 | 34,937,694B | 3m 54.8s |