Terms of use

These are the same terms included with the product. Text files: 日本語 · English · 中文 · 한국어

This English version is a translation provided for reference. The authoritative version is determined by Section 9.

1. Permitted use

These terms apply to the programs, reader model, UI assets, Demo PDF, and other product files supplied with PDFReader. Third-party components are covered separately by Section 6.

By purchasing, downloading, installing, or using the product, you agree to these terms. If you do not agree, do not download or use the product. Anyone who receives product files under Section 3 also agrees to these terms by using those files.

Purchasers may add the product to VRChat world projects that they hold or operate for themselves and upload those worlds. Commercial and noncommercial uses are allowed, including personal work, corporate projects, public and private worlds, events, and paid services. There is no limit on the number of the purchaser’s own worlds and no need to purchase again for each world. Commissioned work, collaboration, community projects, and delivery to others are covered by Section 3.

Players visiting these worlds may use the reader without purchasing it. This permission includes the data uploads and transfers normally needed to run a world in VRChat. It does not, by itself, permit providing editable world projects or reusable product files to others, except for the collaboration and delivery allowed under Section 3.

2. Modification, recording, and display

Users may modify the reader’s appearance, settings, and supplied editable files for the uses described above, and keep backups for their own use.

Images and videos showing the product may be captured, published, and livestreamed, including for commercial purposes. No additional credit to PDFReader’s author is required in a world or work, except for copyright and license notices required by third-party licenses.

Permission to take photos and screenshots, record videos, livestream, and showcase products includes ordinary displays of complete pages or interfaces. It does not include capturing, cropping, extracting, or rearranging original Demo content, UI assets, or other material created by PDFReader’s author into PDFs, page-image collections, textures, or asset packs that replace the original content or can be directly reused by others, and providing them to others.

PDFs supplied by users and their corresponding page data remain subject to Section 5. Rights already granted by third-party licenses remain subject to Section 6.

3. Purchasing, collaboration, and world delivery

There is no separate team license plan. Once the actual commissioning client, or the individual or legal entity that holds or operates the world for itself, purchases the product, it may provide necessary product files and modified versions to collaborators who actually help create or maintain its permitted project. These collaborators do not need to purchase separately and may use, edit, and store the files for that purchaser’s project. This does not grant them a license to use the files in independent projects of their own or for other clients.

When work for another party includes making, installing, or modifying the reader and delivering a world that the other party will independently hold or operate, the client actually receiving that world must purchase the product. Before delivery or transfer to another independent holder or operator, the recipient must have purchased the product, even if it receives only an uploaded world and no project or product files. A purchase by the world creator or the original purchaser, or their continued involvement in creation or maintenance, cannot replace the recipient’s purchase. These conditions apply to both paid and unpaid collaboration and delivery.

For a single community world that members actually create and operate together, the person who genuinely represents the project and takes responsibility for publishing and operating it may purchase the product. Members do not need to purchase individually when they work only on creating or maintaining that specific shared project. This permission does not cover members’ independent worlds, nor other independent projects merely because they share a community, team, or representative. As long as the original shared project and its actual shared operation continue, changing its representative or maintenance staff does not require another purchase. A handover to another independent holder or operator remains subject to the preceding paragraph.

A world project refers to a specific VRChat world. Ordinary updates, backups, test versions, and adaptations for different VRChat platforms remain part of the original project. Sharing a team, repository, project name, or base files does not make separately created or independently delivered worlds the same project.

Who must purchase is determined by the actual commissioning, delivery, holding, and operating arrangements. Uploading a world or managing an account on another party’s behalf, accepting creation or maintenance work, or being a member or representative in name only does not make a world independently held or operated by another party the creator’s or account manager’s own project. These arrangements cannot exempt an independent recipient from purchasing.

As long as the purchaser continues to hold or operate the original permitted world, or the community project described above continues, changing collaborators, contractors, or maintenance staff does not require another purchase. Collaborators who have not purchased the product may not continue to use it for their own independent work after their collaboration ends. Continuing to maintain the original permitted project on request, or keeping necessary project archives, does not grant permission to use or distribute the product for other projects. This paragraph does not change rights in user PDFs and page data under Section 5 or third-party licenses under Section 6.

Product files and modified versions may be shared as needed only among people authorized to participate in the permitted project, for its creation and maintenance. They must not be supplied to unrelated people, publicly distributed, resold, or shared externally as general-purpose assets. This section does not restrict purchasers from using the product under Section 1 in other worlds they hold or operate for themselves. Nor does it require a separate purchase by someone whose use is limited to the collaboration described here for other clients who have purchased the product.

Before providing product files under this section, the sender must give the recipient the applicable terms and obtain their agreement to use and share the files within the permitted project scope. The files must be accompanied by the full text of the applicable version of the terms, or a link to that full version. Members passing files on to other authorized participants must do the same. Collaborators do not need to be registered with PDFReader’s author. This paragraph does not waive the purchase requirements that this section places on actual clients or independent recipients.

4. Redistribution and reverse engineering

Except as allowed for world operation under Section 1, collaboration under Section 3, or third-party licenses under Section 6, users must not share, resell, or publicly release all or any part of the product files. The same conditions apply to modified files.

For example, product files must not be included in publicly downloadable Unity projects, asset packs, Prefab packs, or public code repositories. Extracting them from a world and redistributing them is also prohibited. Users must not claim that original parts of the product created by PDFReader’s author are their own original work.

Users must not decompile, disassemble, or otherwise reverse engineer program files of the product that are not supplied as source code (compiled files such as DLLs), or provide or publish source code or internal structural information obtained in this way. This does not apply where permitted by third-party licenses under Section 6, or to acts that cannot legally be restricted by agreement.

5. User PDFs and baked data

Copyright and other rights in the text, images, fonts, and other content of PDFs supplied by users remain with the respective original rights holders. Page data baked from that content does not become part of this product merely because PDFReader was used. Baking does not change the ownership of rights in the original content.

Providing this tool does not give PDFReader’s author rights in those PDFs or their page content, and the author does not claim the product’s copyright over them. Users may use, distribute, or sell their own PDFs and corresponding page data to the extent allowed by the original content’s permissions, without obtaining additional permission from PDFReader’s author.

Users must check the sources and permissions of the content they add and bear the corresponding responsibility for their own baking, display, uploading, and distribution. Providing PDFReader does not mean that its author has reviewed, approved, or licensed that content. Successful baking does not grant permission to use or distribute the original content.

The above provisions do not cover product files such as the reader programs, model, or UI assets. If baked output also contains these product files, they remain subject to Sections 3 and 4. Third-party programs, fonts, and assets remain subject to their respective licenses. This does not change rights in the user’s page data.

The supplied Demo PDF and page data baked from its content are treated separately as product content. They may be displayed in worlds under Section 1, and images or videos showing them may be captured, published, or livestreamed under Section 2. Their redistribution is subject to Section 4. Rights already granted by third-party licenses described in Section 6 are not restricted by this paragraph.

6. Third-party components

Supplied open-source programs, fonts, and other third-party assets are governed by their respective licenses. These terms do not restrict rights granted by those licenses. If there is a conflict, the original license takes precedence for the relevant component.

Retain the copyright notices, license texts, and other notices required by each applicable license. Details are provided in the included third-party license information.

7. Support and disclaimers

Questions about use and bug reports can be sent to the author by email (ruoyuyo55@gmail.com). You can also contact the author through the messaging feature of the BOOTH shop selling PDFReader (ルヨラボ). Please include your setup, the steps that led to the problem, and helpful screenshots or logs.

Support covers the environments and features stated on the product page. Converted PDFs may differ from the original display, and complete reproduction cannot be guaranteed. Correct operation of user-modified versions or combinations with arbitrary third-party assets cannot be guaranteed, nor can compatibility with every future Unity or VRChat version. The author will assess fixes and updates according to the issue.

The product is provided as is. Apart from commitments expressly stated on the product page or in these terms, no additional warranty of fitness for a particular purpose is made.

These disclaimers apply only to the extent permitted by law. They do not exclude the author’s liability for intentional misconduct or gross negligence, or exclude or restrict user rights that cannot legally be waived by agreement.

8. Rights, violations, and changes to the terms

Except for user content and third-party components, copyright and other intellectual property rights in the original parts of the product created by PDFReader’s author remain with that author. Purchasing the product does not transfer these rights to the purchaser.

Updates to these terms will identify their version and date. Without a user’s separate agreement, updated terms will not retroactively reduce the permission granted for a product version the user has already obtained.

Anyone using or distributing product files outside the permitted scope must stop the violation and withdraw files or links provided in violation of these terms that are under their control.

For violations that can be corrected, including use or distribution outside the permitted scope and failures to provide terms in advance, obtain the recipient’s agreement, or include the applicable version of the terms as required by Section 3, the author must notify the person responsible of the specific facts, the provisions violated, and the required corrections, and allow a reasonable period appropriate to the issue. If the violation is not corrected within that period, the author may terminate that person’s permission to use the product by notice. For a material violation of Section 4 involving intentional public release or intentional resale of product files, the author may terminate that person’s permission immediately by notice stating the facts and the applicable provisions, without first allowing a correction period.

A termination notice must state its grounds, scope, and effective time. After termination, the person concerned must stop using and providing product files within the scope of the permission that has been terminated.

Until the author expressly agrees to restore it, a person whose permission has been terminated cannot use the collaboration exception in Section 3 to regain or exercise permission within the scope specified in the termination notice. Receiving the files again or changing project membership status does not restore that permission.

Action against a person responsible for a violation does not automatically terminate permission that other users who are not at fault have lawfully obtained for the original permitted project merely because they collaborate on that project. Preserving those permissions does not grant additional permission for other independent projects or independent recipients, or waive the purchase requirements of Section 3. This section does not change rights in the original content described in Section 5 or third-party licenses under Section 6.

The rule against retroactively reducing existing permission concerns updates to the terms. It does not prevent action for violations under the terms applicable at the time. This section does not exclude or limit rights or liabilities that cannot legally be excluded by agreement.

9. Governing law, jurisdiction, and language

Except for users domiciled in mainland China (excluding the Hong Kong and Macao Special Administrative Regions and the Taiwan region; the same applies below), these terms are governed by the laws of Japan and are to be interpreted in accordance with them, and the Tokyo District Court has exclusive jurisdiction as the court of first instance over any dispute arising in connection with these terms or the product.

For users domiciled in mainland China, including purchasers and anyone who receives product files under Section 3, these terms are governed by the laws of the People’s Republic of China (excluding its conflict-of-laws rules), as set out in Section 9 of the Chinese version, and any dispute arising in connection with these terms or the product falls under the jurisdiction of the people’s court at the defendant’s domicile.

The Japanese version of these terms is the authoritative text, except that the Chinese version is authoritative for users domiciled in mainland China. The other language versions are translations provided for reference; if they differ, the version that is authoritative for the user concerned prevails.

Author / shop name: ルヨラボ
Terms version: 1.0.0 (PDFReader 1.0.0)
Effective date: September 24, 2026