What this site is
A single-purpose utility: convert RAR to ZIP, and preview or extract archive contents, entirely in your browser. There is no account system, no upload pipeline, and no server-side processing, because the conversion engine is WebAssembly code that your browser downloads once and runs locally.
How the tool works
When you drop a .rar file on the converter, your browser reads the file and hands it to a WebAssembly build of the libarchive library. The archive's file table is parsed locally, so contents can be listed and previewed without full extraction. When you pack, the selected files are written into a ZIP container (using the open-source fflate library) and saved through your browser's normal download mechanism. At no point does file content travel over the network.
What this site will and will not do
- It converts RAR to ZIP and extracts archives locally. It does not create RAR files, which requires RARLAB's licensed software.
- It states what is verified and what is not. Verified limits, such as encrypted split volumes not being supported, are stated plainly instead of being promised away.
- It does not host, link to, or distribute third-party archive content. It is a tool for files you already have.
- It measures page views with Google Analytics, and nothing else: no advertising, no profiling, and no trackers in the converter, which runs without any external request.
Contact
Found an error, a claim that does not hold, or a file the tool should handle but does not? Email hello@rartozip.org. Corrections are treated as first-class content: factual errors are fixed at the source and dated.
Credits
The conversion engine is built on libarchive (libarchive.org) compiled to WebAssembly via libarchive.js, and the ZIP writer is fflate. Both are open-source software; this site is grateful for them. RAR and WinRAR are trademarks of RARLAB; this site is not affiliated with RARLAB or WinRAR.