CONVERT
DMG → LZ4
Fast, secure DMG to LZ4 conversion. No registration required.
DRAG. DROP. DONE.
Upload any file and our engines will handle format detection automatically.
Max 100 MB · Free plan · No signup required
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Situation. DMG is Apple's Disk iMaGe format for packaging macOS applications and data. Solution: a LZ4, produced below. Our DMG to LZ4 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 LZ4 bit-identical to what running 7-Zip locally would produce. One more beat. DMG is Apple's Disk iMaGe format for packaging macOS applications and data. Receiving format: LZ4 is an archive format that bundles multiple files into a single compressed container.
Apple Disk Image
Source formatDMG (Apple Disk Image) is the standard disk image format on macOS for distributing software. It can contain a complete file system with compression and optional encryption, and supports internet-enabled auto-mounting for seamless app installation.
LZ4 Compressed
Target formatLZ4 is an extremely fast lossless compression algorithm focused on speed over compression ratio. It can compress at over 500 MB/s per core and decompress at multiple GB/s, making it the standard choice for real-time and in-memory compression.
Why convert DMG to LZ4
A LZ4 often compresses the same content smaller than a DMG 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
DMG → LZ4
Provide the DMG
Drag-and-drop the archive or pick it from your computer. We accept up to 100 MB on the free tier.
Stream-convert
The DMG is decompressed and re-compressed into LZ4 in a single pipeline stage — no temporary extracted folder.
Retrieve the output
Click to download the LZ4. File structure, timestamps and permissions match the original exactly.
Common Use Cases
Legacy format rescue
Re-archive decades-old DMG collections into LZ4 before the DMG tooling disappears from modern package managers.
Cloud storage optimisation
LZ4 tends to compress better than DMG on text-heavy payloads — fewer bytes stored means lower monthly costs.
CI/CD artefact pipelines
Build agents publish artefacts as LZ4 when downstream jobs consume LZ4 natively; avoid an extra extract-and-rezip step.
Mobile sharing
Phone archive apps handle LZ4 out of the box but may prompt the user to install extra software for DMG.
Quality & Compatibility
Compressed size can go up or down between DMG and LZ4 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 DMG is password-protected, we will ask for the password during upload; the resulting LZ4 is emitted with encryption too if the format supports it.
- When the LZ4 has to fit a strict upload cap, split into multi-volume archives in Advanced — several smaller LZ4 parts are often accepted where a single large one is rejected.
- For distribution bundles, include a short README at the root of the LZ4 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 DMG and LZ4 use different compression codecs, every entry is decompressed from the DMG and re-compressed for the LZ4. 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 DMG and the LZ4 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 DMG used an older codec like Deflate. Against modern LZMA2 / Zstd LZ4 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 LZ4 can be re-encrypted with a password of your choice (AES where the target format supports it).
Secure & Private Conversion
Your files are encrypted during transfer, processed in isolated containers, and automatically deleted within 2 hours. We never read, share, or store your data.