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2026

Archived version 1 of 2. This is how the model read before it was corrected. It is shown read only. The current version is here.

LaTeX Project Public License, Version 1.0

Also known as LPPL 1.0, LPPL-1.0, LaTeX Project Public License v1.0.

Commercial use
allowed
Share alike
not required
Attribution
required (keep the copyright and license notices)
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Canonical URI https://dalicc.net/licenselibrary/LPPL-1.0

Permissions

  • Change license from the text Replacing the license of the work, or of an adaptation, with another license, or changing its terms.

    Duties

    • Use a compliant license from the text 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.
    • Original version offer from the text Giving every recipient of a modified work a way back to the original: the unmodified version itself, a difference file, or instructions for obtaining it.
    • Rename from the text Giving a modified or derived work a name that tells it apart from the original.
    • Source code from the text Providing access to the source code of the work with every copy distributed.
  • 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

    • Notice from the text Notice: keeping the license and copyright notices with every copy.
    • Source code from the text Providing access to the source code of the work with every copy distributed.
  • 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.
    • Original version offer from the text Giving every recipient of a modified work a way back to the original: the unmodified version itself, a difference file, or instructions for obtaining it.
    • Rename from the text Giving a modified or derived work a name that tells it apart from the original.
    • Source code from the text Providing access to the source code of the work with every copy distributed.
  • 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

  • Add limitation from the text Not permitted: Add limitation. Adding further limitations or restrictions to the license terms when passing the work on.
  • 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.

Clauses

Warranty disclaimer

There is no warranty for The Program, to the extent permitted by applicable law. Except when otherwise stated in writing, The Copyright Holder provides The Program `as is' without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The entire risk as to the quality and performance of the program is with you. Should The Program prove defective, you assume the cost of all necessary servicing, repair or correction.

Limitation of liability

In no event unless required by applicable law or agreed to in writing will The Copyright Holder, or any of the individual authors named in the source for The Program, be liable to you for damages, including any general, special, incidental or consequential damages arising out of any use of The Program or out of inability to use The Program (including but not limited to loss of data or data being rendered inaccurate or losses sustained by you or by third parties as a result of a failure of The Program to operate with any other programs), even if such holder or other party has been advised of the possibility of such damages.

Additional clauses

Redistribution of unchanged files is allowed provided that all files that make up the distribution of The Program are distributed. In particular this means that The Program has to be distributed including its documentation if documentation was part of the original distribution.

Info

Target asset types
Creative work (i.e. text, picture, sound, movie), Software
Region / jurisdiction
Worldwide
Validity
Perpetual
Source
https://spdx.org/licenses/LPPL-1.0.html
Legal code
https://www.latex-project.org/lppl/lppl-1-0/
This description is published under
https://dalicc.net/licenselibrary/CC-BY-4.0
Publisher
LaTeX3 Project
Attribution name
LaTeX3 Project
SPDX identifier
LPPL-1.0 on the SPDX license list
DALICC identifier
LPPL-1.0

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.

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 left endorsement to the default rule of the core dependency graph, recorded which sentence of the text each statement rests on and named the license the record itself is published under.

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    7 changes

    • removed prohibition dalicc:promote

      Manual edit The endorsement prohibition rested on no sentence of the text; the default rule for endorsement now supplies it.

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

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

      Manual edit Its duty dalicc:compliantLicense quotes "Any such changed files must be distributed under a license that forbids distribution of those files, and any files derived from them, under the names used by the original files in the distribution of The Program."

    • changed permission odrl:derive with duties [cc:Attribution, cc:SourceCode, dalicc:modificationNotice, dalicc:originalVersionOffer, dalicc:rename]

      was permission odrl:derive with duties [cc:Attribution, cc:SourceCode, dalicc:modificationNotice, dalicc:originalVersionOffer, dalicc:rename]

      Manual edit Its duty dalicc:rename quotes "* You rename the file before you make any changes to it, unless the file explicitly says that renaming is not required."

    • changed permission odrl:distribute with duties [cc:Notice, cc:SourceCode]

      was permission odrl:distribute with duties [cc:Notice, cc:SourceCode]

      Manual edit The statement now quotes the sentence of the licence text it rests on: "Redistribution of unchanged files is allowed provided that all files that make up the distribution of The Program are distributed."

    • changed permission odrl:modify with duties [cc:Attribution, cc:SourceCode, dalicc:modificationNotice, dalicc:originalVersionOffer, dalicc:rename]

      was permission odrl:modify with duties [cc:Attribution, cc:SourceCode, dalicc:modificationNotice, dalicc:originalVersionOffer, dalicc:rename]

      Manual edit Its duty dalicc:rename quotes "* You rename the file before you make any changes to it, unless the file explicitly says that renaming is not required."

    • changed prohibition dalicc:addLimitation

      was prohibition dalicc:addLimitation

      Manual edit The statement now quotes the sentence of the licence text it rests on: "Individual files may have specific further constraints on modification, but no file should have restrictions on distribution other than those specified below."

    • 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 (Other OSI approved licenses (corporate, academic, weak copyleft)).

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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.