Middle-out compression
Lossless, bit for bit. A file comes back exactly as it went in, at a fraction of the size.
New Weissman 5.2, now verified by someone other than us
Smaller files. Bigger internet.
Pied Piper shrinks anything you give it with middle-out compression, then keeps it on PiperNet, a network of ordinary devices that nobody owns. Not us, and definitely not Hooli.
Free for personal use · macOS, Windows and Linux
$ piper compress ./everything reading 48,311 files locating the middle ✓ compressing outward 100% before 212.4 GB after 18.9 GB lost 0 bytes✓ Weissman score 5.2 (limit 2.9)$ Compressing files for
- Aviato®
- bachmanity
- Raviga Capital
- Bream/Hall
- sliceline
The Weissman score
5.2, where the limit was 2.9.
The Weissman score rates a compressor on how small it makes a file and how quickly it gets there. For years, 2.9 was considered the theoretical limit. Middle-out scored 5.2 on a live stage and has not come back down.
- Pied Piper middle-out 5.2
- Theoretical limit 2.9
- Hooli Nucleus 2.89
Dashed line: the theoretical limit. Scores measured on the standard test corpus. Hooli rounds 2.89 up. We don’t.
Product
Everything gets smaller.
One engine for documents, video, backups and the 40 GB spreadsheet finance keeps just in case, with the same lossless guarantee on all of them.
Storage on PiperNet
Files are split into encrypted shards and spread across devices with room to spare. There is no data center to breach or subpoena.
Video at any bandwidth
Middle-out decodes while it streams, so 4K plays over a connection that would struggle with a voice call.
SeeFood integration
Tag images as they upload. Correctly classifies hot dog and not hot dog. Other foods are on the roadmap.
A command line that stays out of the way
piper compress works on a file, a folder or a whole disk, and prints its Weissman score when it finishes, because we are proud of it.
Security reviewed by Gilfoyle
End-to-end encryption, audited by our systems architect, who approves of very little. He approved of this.
How middle-out works
We start in the middle.
Most compressors read a file from the first byte to the last. Middle-out starts where the patterns are densest and works toward both ends at once.
- 01
Find the middle
Piper maps the file and splits it at its densest point. That is rarely the halfway mark, and it is always where the most repetition lives.
- 02
Work outward
Both halves compress in parallel from the split, sharing one dictionary, so every pass is cheaper than the one before it.
- 03
Meet at the edges
The halves finish at the first and last byte. Piper checks every bit against the original before it calls the job done.
your laptop · Palo Alto phone · Osaka phone · Lagos refrigerator · Fremont
PiperNet
Stored on a network nobody owns.
PiperNet splits each compressed file into encrypted shards and spreads them across phones and laptops that have space to spare. No single device holds a whole file, and no single company holds the network.
- Nodes online
- 81,204
- Countries
- 64
- Refrigerators
- 3
- We are looking into it.
Testimonials
Said about us, on the record.
“I discovered these people. Put that at the top.”
“I’m on the board, I think.”
“This thing doesn’t have three commas yet. It will.”
“I have no comment, and have instructed my lawyers to also have no comment.”
Make your files smaller.
We are not going to tell you we are making the world a better place. We are making files smaller. The world can decide.