License
Usage rights
Website content. The content published on this website (texts, graphics, layout) may be freely read, linked to, quoted with attribution, and shared for private, non-commercial purposes. Commercial reuse of website content is permitted only with the prior written consent of the provider. Application usage tiers. Use of the PDFEnhancer application is offered in three tiers: (a) BYO tier (free of charge): the application may be used at no cost, provided the user supplies and independently manages their own OpenAI and Anthropic API keys. No account is required. All data - PDFs, transcripts, generated content, AI chat history, exam questions, recordings - remain exclusively in the local storage of the end device. No formal customer support is provided in this tier; issues opened in the public repository are addressed at the provider's discretion subject to available resources, without any individual entitlement. (b) Pro tier: against an ongoing fee, the user gains access to cloud storage, cross-device synchronisation, and API keys managed by the provider. A user account is required, since storage and synchronisation presuppose user identification. Responses to support requests are issued within 5 business days. (c) Academia licence (one-time payment): educational institutions may acquire a time-unlimited licence for self-hosting the application. This includes unrestricted use of the source code within the institution and independent management of logs, observability, and API keys. An optional maintenance subscription with a response time of 10 business days may be added separately. Individual arrangements (e.g. cloud hosting by the provider, supplementary service levels) are available on request. User responsibility. The user bears sole responsibility for the content they upload into the application (in particular PDFs and lecture materials), for the outputs generated by the application (transcripts, summaries, AI chat responses, exam questions, TTS audio) and any further use thereof, for obtaining the consent of all third parties prior to any audio recording made by means of the application (cf. § 120 (1) StGB and Art. 6 (1)(a) GDPR), and for any legal consequences arising from the content of the generated outputs. PDFEnhancer assumes no responsibility for the outputs generated by OpenAI or Anthropic; the provider's liability is limited to the proper operation of the cloud infrastructure under the paid subscription (functioning storage, synchronisation, and secure key management). Prohibited conduct. The following are expressly prohibited: commercial reuse of website content or the application without prior written consent; automated mass scraping of any content; reverse engineering, decompilation, disassembly, or other attempts to reconstruct the source code beyond the rights granted by the applicable licence; denial-of-service attacks and other impairments of availability; man-in-the-middle attacks, manipulation of data communications, and circumvention of security mechanisms; abuse of managed API keys (such as excessive calls or transfer to third parties); redistribution of the application as one's own product; and removal of copyright, trademark, or attribution notices. The provider expressly reserves the right to pursue legal action in the event of any breach.
Reserved rights
Trade mark and visual identity. All rights to the trade mark “PDFEnhancer”, including logo and visual identity, remain with the provider. Trade-mark filings are planned at the Österreichisches Patentamt and at the European Union Intellectual Property Office (EUIPO) once the mark designs are finalised. Website content. The textual, graphical, and design content of this website is subject to Austrian copyright law (in particular § 2 Z 1 UrhG for literary works and § 3 Abs. 1 UrhG for visual-arts works) and remains with the provider, except where expressly noted otherwise (see the Credits page for any incorporated third-party content). Source code. The source code of the application will be made available under AGPL-3.0 upon public release (see “Software licence” below); the rights granted by AGPL-3.0 are not affected hereby. The source code of this website is excluded from that release and remains in principle proprietary; a time-limited disclosure under the MIT/ISC licence applies through July 2026 in the context of a course assignment at TU Wien.
Software licence
Application - AGPL-3.0. The PDFEnhancer application is planned to be released, upon public source-code publication (planned post-launch), under the GNU Affero General Public License version 3.0 (AGPL-3.0, https://www.gnu.org/licenses/agpl-3.0.html). The AGPL-3.0 permits in particular self-hosting, free-of-charge use with the user's own API keys, and forking and adapting the source code. Reasons for the choice of AGPL-3.0. (i) Transparency and security auditability: the public source code allows any party to independently verify the absence of malicious code and unauthorised data storage. (ii) Contribution to the open-source community: the AI models substantially used in developing this software rest on the accumulated work of the open-source world; an AGPL release returns value to that community. (iii) User freedom: the source code may be forked, adapted, and developed further at the user's own responsibility. Website repository. The repository of this website is separate. It remains in principle proprietary (all rights reserved). Through July 2026, the repository is published openly under the MIT/ISC licence in the context of the course assignment at TU Wien mentioned above; after that date the repository will be set to non-public. Separation of works. The application and the website are to be regarded as two distinct works under separate licences. Commercial uses of the application beyond the rights granted by AGPL-3.0 require a separate agreement with the provider.
Liability disclaimer
Liability for damages caused by slight negligence is excluded, except for personal injury and breach of material contractual obligations. Liability is further excluded for pure financial losses, loss of profit, third-party damages, indirect damages, and consequential damages. The limitations or exclusions of liability in this section do not apply in cases of gross negligence or wilful misconduct on the part of the provider.
Applicable law and dispute resolution
Unless Austrian law already applies by virtue of this webshop being directed at Austria, the parties agree that Austrian law shall apply exclusively, to the exclusion of the UN Convention on Contracts for the International Sale of Goods (CISG). With respect to consumers, this choice of law applies only to the extent that it does not deprive the consumer of the protection afforded by mandatory provisions of the law of the country in which the consumer has their habitual residence (Art. 6 (2) Rome I Regulation). In disputes with consumers we participate, pursuant to § 19 Abs. 1 AStG, in alternative dispute resolution through the Internet Ombudsstelle (www.ombudsstelle.at).
Portions of these license terms were derived from the WKO AGB-Generator template (https://musterformulare.wko.at/digitalisierung/agb-generator) and adapted for digital-software distribution.