Case study: lossless PDF/DOCX compression
The latest Incybit Exact Preservation beta delivered lossless restore and beat leading archive tools on compressed size in our current real-world PDF/DOCX benchmark.
Dataset: 612 files, 427.73 MB original size, mostly PDFs with DOCX files. All benchmark rows restored with Hash OK.
317.90 MB with lossless restore
Incybit Exact Preservation compressed the 427.73 MB dataset to 317.90 MB and restored with Hash OK. This was smaller than 7-Zip LZMA2 and WinRAR Best in the same internal benchmark run.
| Tool / mode | Compressed | Reduction | Compress | Restore | Integrity |
|---|---|---|---|---|---|
| Incybit Exact Preservation | 317.90 MB | 25.68% | 25.66s | 21.35s | Hash OK |
| 7-Zip LZMA2 | 326.87 MB | 23.58% | 27.32s | 11.13s | Hash OK |
| WinRAR Best | 333.52 MB | 22.03% | 14.54s | 2.57s | Hash OK |
| ZIP | 397.00 MB | 7.18% | 11.14s | 2.22s | Hash OK |
| Gzip | 396.78 MB | 7.24% | 10.08s | 8.22s | Hash OK |
Internal benchmark, Windows beta v2.0.16 / Sprint 10 engine. Results vary by file type, file structure, system environment and product version.
Why this milestone matters
This result is not based on visual optimisation. It is the Exact Preservation path: files are restored without loss and verified with Hash OK. The improvement comes from structure-aware lossless processing, including exact PDF binary splitting and byte-for-byte rebuild.
Important context
Compression results are highly dependent on file type and structure. This benchmark is a strong milestone for the current real-world PDF/DOCX dataset, but it does not mean every folder will beat every tool. Incybit is being tested across wider mixed datasets so the engine can continue improving safely.