ZJX 1.29.5 to 1.29.6.6: The 1.29 Line Since REDLINE
Since ZJX 1.29.0 REDLINE, the 1.29 line has shipped four point releases, each faster, lighter, or more dependable than the one before, and each restoring every byte exactly.
ZJX 1.29.0 REDLINE gave the archive a third way to work: compact when size matters, fast when balance matters, ultrafast when wall time matters. Since then the 1.29 line has shipped four point releases. None of them changes what an archive is or how it restores. Each one makes the same archives faster, lighter, or more dependable, and each one was measured against the release before it before it shipped.
1.29.5 GRIDMIND: fitting the job to the machine
GRIDMIND taught ZJX to look at the machine it is running on before it starts. It plans each archive job around the processors and memory that are actually available, then holds to that plan. On our qualification host the result was clearly faster verified creation than 1.29.0 overall, with every archive still byte-identical to what 1.29.0 wrote.
1.29.6 IRONFLOOR: faster everywhere, not just on average
GRIDMIND was faster overall, but we wanted more than a good average. IRONFLOOR set a stricter bar: beat 1.29.0 in every configuration we measure, not just most of them. It cleared that bar in every measured cell, about 1.74 times faster verified creation overall, with lower memory use and archives that are still byte-identical. It also passed fresh held-out checks that were frozen before measurement.
1.29.6.5 SIGHTLINE: less work where there is nothing to gain
Photos, video, and other already-compressed files rarely shrink much further, yet a thorough archiver can spend a long time trying. SIGHTLINE lets the fast objective recognise that kind of input and take a lighter path, so those files are archived several times faster, up to nearly thirteen times faster in our tests, at essentially the same size. Everything else is byte-identical to the release before.
1.29.6.6: dependable JSON-lines archives
JSON-lines files are close to the heart of what ZJX is built for. 1.29.6.6 is a reliability release for that data: it tightens how structured records are handled, keeps full compatibility with archives written by earlier versions, and leaves every other archive byte-identical with the same speed.
What has not changed
Every 1.29 release keeps the same promise as 1.29.0: one format, one integrity contract, and exact restoration of every byte. Each release was measured against the one before it on the same laboratory host and shipped only after it passed. The ZJX site carries the release history and the results since 1.29.0, and the 1.29.6.6 release record lists its checksums.
What comes next
Work continues on the 1.29 line, and ZJX Basic, the free desktop app, remains in development. The story of the line before this begins with 1.29 REDLINE. Packages are provided on request, and a paid evaluation measures ZJX against your own data: explore ZJX.