Object code optimizer

The main advantage of re-optimizing existing programs was that the stock of already compiled customer programs (object code) could be improved almost instantly with minimal effort, reducing CPU resources at a fixed cost (the price of the proprietary software).

Some binary optimizers do executable compression, which reduces the size of binary files using generic data compression techniques, reducing storage requirements and transfer and loading times, but not improving run-time performance.

Actual consolidation of duplicate library modules would also reduce memory requirements.

Some binary optimizers utilize run-time metrics (profiling) to introspectively improve performance using techniques similar to JIT compilers.

More recently developed "binary optimizers" for various platforms, some claiming novelty but, nevertheless, essentially using the same (or similar) techniques described above, include:

A binary optimizer takes the existing output from a compiler and produces a better execution file with the same functionality.