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2026

Info-ZIP License

Also known as Info-ZIP, Info-ZIP License.

Commercial use
allowed
Share alike
not required
Attribution
required (keep the copyright and license notices)
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Write this as a license text (needs an account) DALICC reads the model above and writes what it permits, requires and prohibits in plain English. Without an account, the Text download above writes the model out from the vocabulary.

Canonical URI https://dalicc.net/licenselibrary/Info-ZIP

Permissions

  • Change license by library convention Library convention: family rule 15: Permissive records permit relicensing. Replacing the license of the work, or of an adaptation, with another license, or changing its terms.

    Duties

    • Use a compliant license by library convention Library convention: family rule 15: Permissive records permit relicensing. Choosing a replacement license that stays compliant with the terms of the original license.
  • Charge distribution fee from the text Charging a fee for the act of providing a copy of the work to someone else.
  • Commercial use from the text Using the work to generate income, directly or indirectly, for example by selling it or by using it in advertising.
  • Derivative works from the text Distributing an adaptation of the work and making it available to the public.
  • Derive from the text Creating a new work from the work, such as a translation, adaptation or arrangement of it or of a part of it.

    Duties

    • Attribution from the text Giving credit to the copyright holders or authors of the work, in the form the licensor asks for.
    • Modification notice from the text Marking a changed work as changed, saying how it differs from the original and keeping earlier notices of change.
    • Notice from the text Notice: keeping the license and copyright notices with every copy.
    • Rename from the text Giving a modified or derived work a name that tells it apart from the original.
  • Display from the text Showing the work to the public without making a copy the viewer keeps.
  • Distribute from the text Providing copies of the work to the public or to anyone else.

    Duties

    • Attribution from the text Giving credit to the copyright holders or authors of the work, in the form the licensor asks for.
    • Notice from the text Notice: keeping the license and copyright notices with every copy.
  • Modified works from the text Distributing a modified version of the work that does not amount to a new, derivative work.
  • Modify from the text Altering the work, for example by updating it, without creating a new work; an alteration that creates a new work is Derive.

    Duties

    • Attribution from the text Giving credit to the copyright holders or authors of the work, in the form the licensor asks for.
    • Modification notice from the text Marking a changed work as changed, saying how it differs from the original and keeping earlier notices of change.
    • Notice from the text Notice: keeping the license and copyright notices with every copy.
    • Rename from the text Giving a modified or derived work a name that tells it apart from the original.
  • Present from the text Performing the work in public, including by broadcast or other communication to the public.
  • Reproduce from the text Making copies of the work in any form.

Prohibitions

  • Promote from the text Not permitted: Promote. Using the name or trademarks of the licensor or of contributors to endorse or promote a product.

License-wide duties

This license states no duties that apply to the work as a whole.

What applies by default

The statements above are the library's reading of this license: each is marked with the sentence it rests on, or as a library convention where the text is not explicit. The statements below are the ones the DALICC reasoner supplies for acts the license says nothing about, from the default rules of the dependency graph it reasons with. Each one names the legal source it rests on. None of it is in the record.

No default rule of that graph reaches this license: it speaks about every act the rules are about.

Clauses

Warranty disclaimer

This software is provided "as is," without warranty of any kind, express or implied.

Limitation of liability

In no event shall Info-ZIP or its contributors be held liable for any direct, indirect, incidental, special or consequential damages arising out of the use of or inability to use this software.

Additional clauses

Redistributions in binary form (compiled executables and libraries) must reproduce the above copyright notice, definition, disclaimer, and this list of conditions in documentation and/or other materials provided with the distribution. Additional documentation is not needed for executables where a command line license option provides these and a note regarding this option is in the executable's startup banner. The sole exception to this condition is redistribution of a standard UnZipSFX binary (including SFXWiz) as part of a self-extracting archive; that is permitted without inclusion of this license, as long as the normal SFX banner has not been removed from the binary or disabled.

Info

Target asset types
Software
Region / jurisdiction
Worldwide
Validity
Perpetual
Source
https://spdx.org/licenses/Info-ZIP.html
Legal code
http://www.info-zip.org/license.html
This description is published under
Creative Commons Attribution 4.0 International
Publisher
Info-ZIP
SPDX identifier
Info-ZIP on the SPDX license list
DALICC identifier
Info-ZIP

This record is published under CC BY 4.0. Credit it as: DALICC License Library, DALICC - Verein zur Förderung der Rechtssicherheit in der Datenbewirtschaftung, https://dalicc.net, CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). The license it describes belongs to its publisher.

Use this license

Everything below is generated from this record. Replace the example address with the address of your own work.

JSON sidecar 

{
  "license-uri": "https://dalicc.net/licenselibrary/Info-ZIP",
  "license-title": "Info-ZIP License",
  "spdx-id": "Info-ZIP",
  "attribution": "Copyright (c) [year] [copyright holder]",
  "asset": null,
  "generated-by": "DALICC"
}

RDF, Turtle 

@prefix cc: <http://creativecommons.org/ns#> .

<https://example.org/my-work>
    cc:license <https://dalicc.net/licenselibrary/Info-ZIP> .

RDF, JSON-LD 

{
  "@context": {
    "cc": "http://creativecommons.org/ns#"
  },
  "@id": "https://example.org/my-work",
  "cc:license": {
    "@id": "https://dalicc.net/licenselibrary/Info-ZIP"
  }
}

HTML attribution 

<p>This work is licensed under <a href="https://dalicc.net/licenselibrary/Info-ZIP" rel="license">Info-ZIP License</a>.</p>

This license asks for attribution, so the credit line is part of it.

Badge DALICC badge for Info-ZIP License

Markdown 

[![License: Info-ZIP License](https://dalicc.net/license-library/Info-ZIP/badge.svg)](https://dalicc.net/license-library/Info-ZIP)

HTML 

<a href="https://dalicc.net/license-library/Info-ZIP"><img src="https://dalicc.net/license-library/Info-ZIP/badge.svg" alt="License: Info-ZIP License"></a>

Review

Written from the license text by
Giray Havur
Written on
2026-09-22
Second review
not yet done
Record changed since this review
yes (version 2, 2026-09-24)
Findings
13 recorded, 10 applied to the record, 0 proposed

Models the licence of the Info-ZIP tools. It is a zlib-shaped grant with a BSD retention condition that reaches source and binary form, a rule that altered versions be marked and not passed off as Info-ZIP releases, and a reservation of the project's own names. The record carries a dalicc:promote prohibition for the misrepresentation clause.

13 findings

  • info Rubric 1 spdx:licenseId applied

    File name, record identifier, SPDX identifier and IRI local name are all Info-ZIP.

  • info Rubric 2 odrl:target applied

    One odrl:AssetCollection of dct:type dcmitype:Software. The text names source code, compiled executables and libraries.

  • major Rubric 3 odrl:permission applied

    The grant reads "Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the above disclaimer and the following restrictions". The record permits reproduce, distribute, modify, derive, display, present, commercial use, derivative works, modified works and the distribution fee.

  • major Rubric 3 odrl:permission applied

    dalicc:ChangeLicense is permitted with the dalicc:compliantLicense duty. The text keeps conditions that must survive a relicensing and bars no change of terms.

  • major Rubric 4 odrl:prohibition applied

    dalicc:promote is prohibited for "Such altered versions are further prohibited from misrepresentative use of the Zip-Bugs or Info-ZIP e-mail addresses or the Info-ZIP URL(s), such as to imply Info-ZIP will provide support for the altered versions", read with the sentence that bars labelling an altered version with the Info-ZIP names.

  • major Rubric 5 odrl:duty applied

    cc:Attribution and cc:Notice hang off odrl:distribute, odrl:modify and odrl:derive. The first restriction asks that source redistributions retain "the above copyright notice, definition, disclaimer, and this list of conditions"; the second asks binary redistributions to reproduce the same four items in the documentation, so the duty reaches binary form too.

  • minor Rubric 5 odrl:duty applied

    dalicc:modificationNotice and dalicc:rename hang off odrl:modify and odrl:derive for "Altered versions ... must be plainly marked as such and must not be misrepresented as being the original source" and for the bar on labelling them with the Info-ZIP names.

  • minor Rubric 6 dalicc:WarrantyDisclaimer applied

    The warranty sentence and the liability sentence sit in one paragraph before the grant. They are split into dalicc:WarrantyDisclaimer and dalicc:LiabilityLimitation. The comma inside the quotation marks of "as is," is the text's own.

  • info Rubric 6 dalicc:additionalClauses applied

    The binary-form condition with its UnZipSFX exception, the altered-versions clause and the reservation of the project names are quoted in full, because the exception and the reservation say more than the duties can.

  • info Rubric 7 cc:jurisdiction applied

    The text names no legal system and sets no term, so cc:jurisdiction is dalicc:worldwide and dalicc:validityType is dalicc:perpetual.

  • info Rubric 8 dalicc:additionalClauses none

    The exception that lets a standard UnZipSFX binary travel inside a self-extracting archive without the licence has no term. It is a carve-out from a condition rather than from the grant, so dalicc:exemptedMaterial would not be right; the clause is quoted instead.

  • info Rubric 9 record none

    The consistency check of app.services.composer against the dependency graph dg_default returned an empty conflict list.

  • info Rubric 10 record none

    Read against licensedata/licenses/TheZlibLibpngLicense.ttl the record adds cc:Attribution, because the Info-ZIP text asks for the definition of who Info-ZIP is to travel with the copy, and adds the dalicc:promote prohibition, which the zlib text has no clause for.

Report an issue The review record as JSON The review checks the model against the license text. It is not legal advice.

History

This license model has 2 versions. Version 2 is the one served today; every earlier version keeps its own address, so a conclusion drawn from one of them can still be checked against it.

  1. Version 2 current2026-09-24 Giray Havur

    The changes since version 1 recorded which sentence of the text each statement rests on and named the license the record itself is published under.

    View JSON-LD Turtle RDF/XML

    2 changes

    • changed permission dalicc:ChangeLicense with duties [dalicc:compliantLicense]

      was permission dalicc:ChangeLicense with duties [dalicc:compliantLicense]

      Manual edit The statement is marked as a library convention, family rule 15: Permissive records permit relicensing: the text does not state it in as many words. Its duty dalicc:compliantLicense is marked as a library convention, family rule 15: Permissive records permit relicensing.

    • added dct:license <https://creativecommons.org/licenses/by/4.0/>

      Manual edit Every record is published under CC BY 4.0. cc:license names the record DALICC keeps of that licence; dct:license now names it by the address Creative Commons publishes it at, so that a consumer matching the canonical IRI finds it.

  2. Version 1

    Created from the license text on 2026-09-22 (Permissive variants).

    View JSON-LD Turtle RDF/XML

Every change names the reason behind it: a finding of the content review, one of its library-wide decisions, the metadata that review wrote onto every record, or a hand edit. None of it is legal advice.

Nothing on this page is legal advice. What a license means is decided by its text; ask a legal advisor before you rely on it.