With SBCL, the bare-bones image would be ±100MB, with core compression (a single flag to set in the .asd file) I get apps at ±25MB. The startup time of the latt

With SBCL, the bare-bones image would be ±100MB, with core compression (a single flag to set in the .asd file) I get apps at ±25MB. The startup time of the latter is ±0.30s, the bigger executable is faster. My app would be a web app, with the webserver, templates, and many libraries. This binary also contains the Lisp debugger and compiler, which is useful to interact with it when it's running. In a latest version, SBCL switched to compression with zstd, which makes the compression process 4 times faster, decompression around 2 times, and it saves around +10% more space. On reddit (link below), a user speaks about LispWorks binaries of ±9MB.