Drop a .lzh file here
or click to choose — opened on your device, never uploaded
LZH (also seen as .lha) is a compressed archive format from the LHA/LHarc tools, still common in retro and Japanese software. Open a .lzh or .lha file right in your browser, list what is inside, and download the files — or repackage everything into a standard .zip. No LHA software, no installs, no uploads, no sign-up.
Drag your archive onto the box above or click it to pick a .lzh or .lha file. The tool opens the archive in your browser, lists every file with its size, and lets you save any file on its own or choose Download as .zip to repackage the whole archive into a standard ZIP that opens natively on Windows and macOS.
The decoding runs on your own machine: the .lzh is handed to libarchive, compiled to WebAssembly and driven from a background worker so the page stays responsive, with nothing to upload and no software to install. LHA and LHarc archives are decades old, so a browser that reads them without hunting down a legacy unpacker is often the quickest way in.
That worker pulls roughly 1 MB of WebAssembly from this site, and that decoder is the only thing this page ever requests. The honest test takes a few seconds: open your browser’s network panel, drop in a .lzh, and read the list. Every request is for the decoder; your archive is not among them, because at no point does the tool send your data anywhere.
No file size limit is imposed here, since there is no upload and no server quota. The .lzh, each file lifted out of it, and any ZIP being assembled all sit in memory at once, so what actually caps you is the free RAM on your device rather than a stated number.
Working with another format? Open a ZIP, a .tar.gz, or convert a RAR or 7z to ZIP.