RAR Compressor — Make RAR Files Smaller Online Free
RAR is a closed format browsers can’t re-compress directly. Extract your RAR and re-archive it as a smaller ZIP with maximum compression — free, private, no upload.
Drop your RAR or ZIP here, or click to browse
Files are processed in your browser — nothing is uploaded.
What is a RAR compressor?
What is it
RAR is a proprietary archive format owned by RARLAB, and browsers cannot reliably re-compress RAR files directly. The practical way to make a RAR smaller is to extract its contents and re-archive them as a ZIP at maximum compression.
filecompressor.app handles the ZIP side of this with the ZIP reducer, re-compressing every entry at DEFLATE level 9. The result is a smaller archive in the open, universally supported ZIP format.
How to make a RAR file smaller
How to use
Since RAR can’t be re-compressed in-browser, use this two-step approach:
- 1
Extract your RAR archive using your usual extraction tool (your OS or an app like The Unarchiver).
- 2
Drop the extracted files (or a ZIP of them) into the compressor above, which re-archives them at maximum DEFLATE level 9 into a smaller ZIP.
Why convert RAR to a smaller ZIP?
Why use it
ZIP is an open, universally supported format — every device opens it without special software.
Maximum DEFLATE level 9 gives the smallest practical archive.
100% private — the ZIP reducer runs in your browser and never uploads anything.
Free with no sign-up, no watermarks, and no limits.
No data is lost — every file is preserved, only the container changes.
FAQ
Common questions about this compression tool.
Frequently Asked Questions
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