CONVERT
RPM → AR
Fast, secure RPM to AR conversion. No registration required.
DRAG. DROP. DONE.
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Max 100 MB · Free plan · No signup required
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Here is the short version — RPM is an archive format that bundles multiple files into a single compressed container. Hence the need for AR. Our RPM to AR converter is a bulk re-archiver. You upload an archive, we open it, stream every entry directly into a new archive of the target type and emit a AR bit-identical to what running 7-Zip locally would produce. A quick refresher — RPM is an archive format that bundles multiple files into a single compressed container. By contrast, AR is an archive format that bundles multiple files into a single compressed container.
RPM Package
Source formatRPM (Red Hat Package Manager) is the package format used by Red Hat, Fedora, CentOS, SUSE, and related Linux distributions. It stores compiled software with metadata, dependency information, and installation scripts in a binary format.
Unix AR Archive
Target formatAR is one of the oldest Unix archive formats, used primarily to group compiled object files into static libraries (.a files). It is also the basis of Debian .deb packages, which are AR archives containing control and data tar files.
Why convert RPM to AR
A AR often compresses the same content smaller than a RPM at the same strength setting, thanks to more modern codecs. For distribution over bandwidth-limited channels — email, chat apps, CDN delivery — the size difference matters.
HOW TO CONVERT
RPM → AR
Provide the RPM
Drag-and-drop the archive or pick it from your computer. We accept up to 100 MB on the free tier.
Stream-convert
The RPM is decompressed and re-compressed into AR in a single pipeline stage — no temporary extracted folder.
Retrieve the output
Click to download the AR. File structure, timestamps and permissions match the original exactly.
Common Use Cases
Legacy format rescue
Re-archive decades-old RPM collections into AR before the RPM tooling disappears from modern package managers.
Cloud storage optimisation
AR tends to compress better than RPM on text-heavy payloads — fewer bytes stored means lower monthly costs.
CI/CD artefact pipelines
Build agents publish artefacts as AR when downstream jobs consume AR natively; avoid an extra extract-and-rezip step.
Mobile sharing
Phone archive apps handle AR out of the box but may prompt the user to install extra software for RPM.
RPM vs AR — Strengths and limitations
What each format does best, and where it falls short.
RPM Strengths
- Explicit dependency graphs like DEB.
- Cryptographic signing and verification.
- Mature tooling (rpm, dnf, yum, zypper).
- Every enterprise Linux distro runs on RPM.
- Self-describing metadata headers.
Limitations
- Red Hat family only — incompatible with DEB.
- Cross-distro .rpms often fail due to library version mismatches.
- "RPM dependency hell" of the late 1990s was a real phenomenon before yum.
AR Strengths
- Universal Unix static-library format since 1971.
- Used as container for .deb packages.
- Simple structure — easy to parse.
- 55+ years of stability.
Limitations
- Minimal metadata.
- Multiple extended-filename variants cause subtle incompatibilities.
- Not a general-purpose archive format.
RPM vs AR — Technical specifications
Side-by-side comparison of the technical details.
| Specification | RPM | AR |
|---|---|---|
| MIME type | application/x-rpm | application/x-archive |
| Extension | .rpm | — |
| Container | Lead + signature + header + cpio archive | — |
| Compression | gzip, bzip2, xz, zstd | — |
| Managers | rpm, dnf, yum, zypper | — |
| Extensions | — | .a (static library), .ar (generic) |
| Magic number | — | "!<arch>\n" (first 8 bytes) |
| Used in | — | Static libraries, .deb package wrappers |
| Tools | — | ar, ranlib, nm |
RPM vs AR — Typical file sizes
Approximate file sizes for common scenarios.
RPM
- Small CLI tool 50 KB - 1 MB
- Desktop app (LibreOffice, Firefox) 100-250 MB
- Enterprise database server 500 MB - 5 GB
AR
- Small static library (libm.a) 500 KB - 5 MB
- Large C++ template library 50-500 MB
- .deb package (wrapping two tar.gz) 100 KB - 300 MB
Quality & Compatibility
Compressed size can go up or down between RPM and AR depending on the codec and the level — modern LZMA2/Zstd usually beats older Deflate on text, while already-compressed content (images, video) changes little. We default to a balanced level; Advanced options expose the full range.
Tips for Best Results
- If the RPM is password-protected, we will ask for the password during upload; the resulting AR is emitted with encryption too if the format supports it.
- When the AR has to fit a strict upload cap, split into multi-volume archives in Advanced — several smaller AR parts are often accepted where a single large one is rejected.
- For distribution bundles, include a short README at the root of the AR so recipients know what the archive contains without extracting it.
Frequently Asked Questions
Frequently Asked Questions
Yes. The free tier accepts files up to 100 MB without registration, email capture or watermarks. Paid plans raise the size cap, enable batch conversions and provide a REST API for automation, but nothing on the free tier is quality-limited — the output is exactly the same as on any paid plan.
Yes — because RPM and AR use different compression codecs, every entry is decompressed from the RPM and re-compressed for the AR. The uncompressed data is identical on both sides, and the re-compression happens entirely inside our processing container.
Uploads run over HTTPS, files are processed in isolated containers, and both the source RPM and the AR output are auto-deleted within two hours. No account is required, file contents are never logged, and KaijuConverter does not use uploads for AI training. The paid plan adds a signable data-processing agreement for regulated workflows.
Usually yes, modestly, when the original RPM used an older codec like Deflate. Against modern LZMA2 / Zstd AR containers expect 10-30% savings on mixed content and almost no change on pre-compressed payloads. Advanced → compression level lets you trade speed for ratio.
Most files finish in well under a minute. Small images and documents are typically ready in a few seconds; large video or audio files scale roughly with duration. Upload speed from your network is usually the dominant factor, not server time.
Yes. Provide the password during upload; we use it only to decrypt inside the processing container and never log or persist it. The resulting AR can be re-encrypted with a password of your choice (AES where the target format supports it).
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Read guideSecure & Private Conversion
Your files are encrypted during transfer, processed in isolated containers, and automatically deleted within 60 minutes. We never read, share, or store your data.