LaTeX Project Public License, Version 1.2

Also known as LPPL 1.2, LPPL-1.2, LaTeX Project Public License v1.2.

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/LPPL-1.2

Permissions

Change license from the text
Duties
- Use a compliant license from the text
Charge distribution fee from the text
Commercial use from the text
Derivative works from the text
Derive from the text
Duties
- Attribution from the text
- Modification notice from the text
- Original version offer from the text
- Rename from the text
- Source code from the text
Display from the text
Distribute from the text
Duties
- Notice from the text
- Source code from the text
Modified works from the text
Modify from the text
Duties
- Attribution from the text
- Modification notice from the text
- Original version offer from the text
- Rename from the text
- Source code from the text
Present from the text
Reproduce from the text

Prohibitions

Add limitation from the text

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.

Promote by default rule (adopted)

This license says nothing about Promote, and the graph applies this reading in all jurisdictions it covers: it is not permitted unless the license permits it.

A licence that says nothing about endorsement is read as not allowing it: the licence gives the licensee no right to use the licensor's name or marks in a way that states or implies that the licensor endorses the licensee or its product, while stating truthfully that a work is based on or uses the licensed work is a different act that this rule does not decide. A copyright licence grants rights in the work, and the right to use a name or a trademark is a separate right under trademark law and the protection of names, which a silent copyright licence does not pass on. Combining a licence that is silent about endorsement with one that permits it shows a conflict marked as coming from this rule.

Basis Trademark and name rights are separate from copyright: Regulation (EU) 2017/1001 article 9 lets the proprietor of an EU trade mark prevent all third parties not having his consent from using the sign in the course of trade, and Directive (EU) 2015/2436 article 10, 15 U.S.C. 1114 and 1125(a), section 12 BGB and section 43 ABGB protect marks and names in the same way. The library's evidence is Creative Commons 4.0 section 2(b)(2): Patent and trademark rights are not licensed under this Public License. A copyright licence that is silent grants no right to use the licensor's name or marks to suggest endorsement (Worldwide)

Clauses

Warranty disclaimer

There is no warranty for The Program. 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 agreed to in writing will The Copyright Holder, or any author named in the files of The Program, or any other party who may distribute and/or modify The Program as permitted above, 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, data being rendered inaccurate, or losses sustained by anyone as a result of any failure of The Program to operate with any other programs), even if The Copyright Holder or said author or said other party has been advised of the possibility of such damages.

Additional clauses

This license gives conditions under which The Program may be distributed and conditions under which modified versions of The Program may be distributed. Individual files of The Program may bear supplementary and/or superseding conditions on modification of themselves and on the distribution of modified versions of themselves, but *no* file of The Program may bear supplementary or superseding conditions on the distribution of an unmodified copy of the file. A distributor wishing to distribute a complete, unmodified copy of The Program therefore needs to check the conditions only in this license and nowhere else.

Info

Target asset types: Creative work (i.e. text, picture, sound, movie), Software
Region / jurisdiction: Worldwide
Validity: Perpetual
Source: https://spdx.org/licenses/LPPL-1.2.html
Legal code: https://www.latex-project.org/lppl/lppl-1-2/
This description is published under: Creative Commons Attribution 4.0 International
Publisher: LaTeX3 Project
Attribution name: LaTeX3 Project
SPDX identifier: LPPL-1.2 on the SPDX license list
DALICC identifier: LPPL-1.2

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/LPPL-1.2",
  "license-title": "LaTeX Project Public License, Version 1.2",
  "spdx-id": "LPPL-1.2",
  "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/LPPL-1.2> .

RDF, JSON-LD

{
  "@context": {
    "cc": "http://creativecommons.org/ns#"
  },
  "@id": "https://example.org/my-work",
  "cc:license": {
    "@id": "https://dalicc.net/licenselibrary/LPPL-1.2"
  }
}

HTML attribution

<p>This work is licensed under <a href="https://dalicc.net/licenselibrary/LPPL-1.2" rel="license">LaTeX Project Public License, Version 1.2</a>.</p>

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

Badge

Markdown

[![License: LaTeX Project Public License, Version 1.2](https://dalicc.net/license-library/LPPL-1.2/badge.svg)](https://dalicc.net/license-library/LPPL-1.2)

HTML

<a href="https://dalicc.net/license-library/LPPL-1.2"><img src="https://dalicc.net/license-library/LPPL-1.2/badge.svg" alt="License: LaTeX Project Public License, Version 1.2"></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: 12 recorded, 8 applied to the record, 0 proposed

The record models version 1.2 of the LaTeX Project Public License, the licence the base LaTeX distribution is published under. It lets you pass a complete, unchanged copy on and lets you distribute a changed file only if you rename it, say in the file that it is changed and no longer part of the program, credit the original, redirect error reports and give the recipient a way back to the unmodified version. The model follows the 1.3c record the library already holds and adds the rename and original-version duties that this text states. Nothing here is legal advice.

12 findings

info Rubric 1 spdx:licenseId applied

The file name, the local name of the odrl:Set IRI, the SPDX identifier and the id of this review record are all LPPL-1.2. cc:legalcode points at the LaTeX Project's own page for this version and dct:source at the SPDX page. The library already holds the 1.3c text under the descriptive id LatexProjectPublicLicenseVersion13c; this record keeps the SPDX id as its identifier, the way every record added since 2026-09-15 does.
minor Rubric 2 odrl:target applied

odrl:target carries dalicc:CreativeWork and dcmitype:Software. The licence governs whatever set of files the author declares to be The Program, which for a LaTeX package is the documented source as much as the code: "You may distribute a complete, unmodified copy of The Program. Distribution of only part of The Program is not allowed." The 1.3c record in the library lists dcmitype:Software alone, which is why this record differs from its nearest sibling in one asset type.
major Rubric 3 odrl:permission applied

The licence grants distribution and modification and says nothing about other uses: "Activities other than distribution and/or modification of The Program are not covered by this license; they are outside its scope. In particular, the act of running The Program is not restricted." The permissions follow the text. odrl:reproduce, odrl:distribute, odrl:display and odrl:present follow from "You may distribute a complete, unmodified copy of The Program. Distribution of only part of The Program is not allowed", odrl:modify, odrl:derive, cc:DerivativeWorks and dalicc:ModifiedWorks from the conditions under which a modified file may be distributed. cc:CommercialUse and dalicc:chargeDistributionFee are permitted because the text bars neither. dalicc:ChangeLicense is permitted and carries the dalicc:compliantLicense duty, because the licence requires the modified file to move to another licence with a named property: "You must distribute the modified file under a license that forbids distribution both of the modified file and of any files derived from the modified file with the filename of the original file".
major Rubric 4 odrl:prohibition applied

Three. cc:ShareAlike is prohibited, because the licence does not require the modified file to stay under the LPPL; it requires the opposite, a licence that forbids reuse of the original file names. dalicc:addLimitation is prohibited, from "but *no* file of The Program may bear supplementary or superseding conditions on the distribution of an unmodified copy of the file". dalicc:promote is prohibited, from "your license should not refer to the LPPL or otherwise give the impression that your program is distributed under the LPPL" read with "You must change any identification string in the file to indicate clearly that the modified file is not part of The Program": neither the licence document nor the name of The Program may be used to suggest that a modified file is the original or that a different licence is the LPPL. The 1.3c record prohibits the same three.
major Rubric 5 odrl:duty applied

odrl:distribute carries cc:Notice and cc:SourceCode, the completeness rule "You may distribute a complete, unmodified copy of The Program. Distribution of only part of The Program is not allowed". odrl:modify and odrl:derive carry five duties: cc:Attribution from "In the modified file, you must acknowledge the authorship and name of the original file, and the name (if any) of the program which contains it", cc:SourceCode from the same completeness rule, dalicc:modificationNotice from "You must change any identification string in the file to indicate clearly that the modified file is not part of The Program", dalicc:originalVersionOffer from "distribute a copy of The Program (that is, a complete, unmodified copy of The Program) together with the modified file", and dalicc:rename from "You must not distribute the modified file with the filename of the original file". dalicc:rename and dalicc:originalVersionOffer are what this licence is about and the 1.3c record does not carry either, which is the largest difference between this record and its sibling.
info Rubric 6 dalicc:additionalClauses applied

dalicc:WarrantyDisclaimer and dalicc:LiabilityLimitation hold the two paragraphs of the warranty section, each in its own field. dalicc:additionalClauses holds the distribution and modification conditions in full, the rules for the LaTeX file name extensions, and the sentence about files that bear their own conditions, so a reader can see the wording every duty was read from. The quoted text keeps the licence's own bullet and number markers.
info Rubric 7 cc:jurisdiction applied

cc:jurisdiction is dalicc:worldwide and dalicc:validityType is dalicc:perpetual: the text names no country, no governing law and no term. It also states no termination clause, so dalicc:terminatesOnBreach is absent, which says the text is silent rather than that the licence cannot end.
gap Rubric 8 dalicc:additionalClauses none

Two clauses have no vocabulary term. The error-report rule, "You must change any addresses in the modified file for the reporting of errors in the file or in The Program generally to ensure that reports for files no longer maintained by the original maintainers will be directed to the maintainers of the modified files", is neither a rename nor a modification notice; proposed term: dalicc:errorReportRedirection, a duty action. And the per-file conditions, under which an individual file may carry its own modification rules while the distribution rules stay the same for every file; proposed term: dalicc:perFileConditions, an annotation. Both are quoted instead.
info Rubric 8 dalicc:orLaterVersionOption none

The licence document itself grants no later-version option. The example notice the preamble recommends does, "either version 1.2 of this license or (at your option) any later version", but that is wording the author of a program chooses to put in the file, not a grant this licence makes. dalicc:orLaterVersionOption is therefore absent, as it is on the 1.3c record, whose preamble recommends the same notice.
info Rubric 9 record none

The consistency check of app.services.composer against the axioms of licensedata/dependencygraph/dg_default.ttl returns an empty list for this record.
info Rubric 10 family none

The nearest sibling is LatexProjectPublicLicenseVersion13c, which the library has held since before the 2026-09-15 review. This record keeps that record's shape: dalicc:ChangeLicense permitted with dalicc:compliantLicense, cc:ShareAlike prohibited, dalicc:addLimitation and dalicc:promote prohibited. It differs in four places, each from the text: dalicc:CreativeWork is added to the target, dalicc:rename and dalicc:originalVersionOffer are added to the adaptation duties, and odrl:grantUse, dalicc:addStatement and dalicc:noWarrantyNotice are left off, because the 1.2 text grants none of the three. dalicc:variantKind is "version", the kind the library gives to the 52 records that model an earlier text of a licence it also holds.
minor Rubric 4 odrl:prohibition applied

dalicc:promote was prohibited and no sentence of this text supports it. The statement was the library's reading of a legal default, that a copyright licence which says nothing about endorsement grants no right to it, and it sat in 519 of 581 records as a house convention. That reading is now an adopted dalicc:DefaultRule of the core dependency graph, which supplies it to every licence that is silent about the action, so a compatibility check reaches the same answer and the record states only what the text states. Removed on 2026-09-23; see section 13 of docs/LICENSE_REVIEW.md.

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.

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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5 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 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 cc:Attribution quotes "In the modified file, you must acknowledge the authorship and name of the original file, and the name (if any) of the program which contains it." Its duty dalicc:modificationNotice quotes "You must change any identification string in the file to indicate clearly that the modified file is not part of The Program." Its duty dalicc:originalVersionOffer quotes "(A) distribute a copy of The Program (that is, a complete, unmodified copy of The Program) together with the modified file; if your distribution of the modified file is made by offering access to copy the modified file from a designated place, then offering equivalent access to copy The Program from the same place meets this condition, even though third parties are not compelled to copy The Program along with the modified file;" Its duty dalicc:rename quotes "You must not distribute the modified file with the filename of the original file."
- 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 cc:Attribution quotes "In the modified file, you must acknowledge the authorship and name of the original file, and the name (if any) of the program which contains it." Its duty dalicc:modificationNotice quotes "You must change any identification string in the file to indicate clearly that the modified file is not part of The Program." Its duty dalicc:originalVersionOffer quotes "(A) distribute a copy of The Program (that is, a complete, unmodified copy of The Program) together with the modified file; if your distribution of the modified file is made by offering access to copy the modified file from a designated place, then offering equivalent access to copy The Program from the same place meets this condition, even though third parties are not compelled to copy The Program along with the modified file;" Its duty dalicc:rename quotes "You must not distribute the modified file with the filename of the original file."
- 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 of The Program may bear supplementary and/or superseding conditions on modification of themselves and on the distribution of modified versions of themselves, but *no* file of The Program may bear supplementary or superseding conditions on the distribution of an unmodified copy of the file."
- 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.
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.