RED LINE PDF — Terms of Service

Version 1.1 · Effective Date: May 11, 2026

These Terms of Service ("ToS" or "Terms") govern Your use of the RED LINE PDF online services, including account management, subscription and billing, cloud storage integration, collaboration features, OCR processing, and related services (collectively, the "Service") provided by ARCH-CORE LAB, LLC ("Provider," "We," or "Us").

Your right to use the RED LINE PDF software application is governed by our separate End User License Agreement (EULA). Both documents apply to Your use of RED LINE PDF. In the event of a conflict, these Terms govern service-related matters and the EULA governs software licensing matters.

By creating an account or using the Service, You agree to be bound by these Terms, the EULA, and our Privacy Policy. If You do not agree, do not create an account or use the Service.

1. Eligibility and Account Registration

1.1 Eligibility

You must be at least 18 years old or the age of majority in your jurisdiction, whichever is greater, to use the Service. By using the Service, You represent and warrant that You meet this eligibility requirement.

1.2 Account Registration

To access the Service, You must create an account by providing accurate, current, and complete information (including email address and name). You agree to update Your account information promptly to keep it accurate.

1.3 Account Security

You are solely responsible for maintaining the confidentiality of Your account credentials and for all activities that occur under Your account. You agree to:

Choose a strong password and keep it confidential
Not share Your account credentials with any third party
Notify us immediately at support@archcorelab.com of any unauthorized access to or use of Your account
Accept responsibility for all activities conducted through Your account, whether or not authorized by You

Provider shall not be liable for any loss or damage arising from Your failure to comply with these account security obligations.

2. Acceptable Use

2.1 You Agree Not To:

Share your account credentials with others
Use the Service for any illegal or unauthorized purpose
Use the Service's OCR or data extraction features to process documents You do not have rights to access
Share or redistribute content extracted via OCR or image tracing without appropriate rights to the source material
Upload, transmit, or distribute viruses, malware, worms, Trojan horses, or any other disruptive or harmful code
Use automated tools, bots, scrapers, or similar means to access, overload, or extract data from the Service
Attempt to probe, scan, or test the vulnerability of the Service or circumvent any security measures
Interfere with or disrupt the integrity or performance of the Service or its underlying infrastructure
Harass, abuse, or harm other users of the Service
Impersonate any person or entity, or misrepresent Your affiliation with any person or entity
Use the Service to send spam or unsolicited communications

2.2 Enforcement

Provider reserves the right to investigate and take appropriate action against anyone who, in Provider's sole discretion, violates these Terms, including suspension or termination of the violator's account without notice.

3. User Content

3.1 Your Content

You retain all rights to PDF documents, annotations, markups, and other content You create, import, or share using the Service ("User Content"). Provider claims no ownership rights to Your User Content.

3.2 User Content Representations and Warranties

You represent and warrant that:

You own or have all necessary rights, licenses, and permissions to Your User Content
Your User Content does not infringe, misappropriate, or violate any third party's intellectual property rights, rights of privacy, rights of publicity, or other legal rights
Your User Content does not violate any applicable law or regulation
Your User Content does not contain any defamatory, libelous, or unlawful material

3.3 User Content Liability

Provider assumes no responsibility or liability for any User Content, including but not limited to any copyright, trademark, or other intellectual property rights violations contained in User Content. You are solely responsible for Your User Content and the consequences of sharing, exporting, or distributing it through the Service.

3.4 Content Removal

Provider reserves the right to remove or disable access to User Content that violates these Terms or applicable law, including in response to valid DMCA notices (see Section 8).

4. Subscription and Payment

4.1 Subscription Fees

Use of the Service requires an active subscription. Subscription fees are based on the selected tier and billing cycle (monthly or annual).

4.2 Payment Processing

Payment processing is handled by Stripe, Inc., a third-party payment processor. By subscribing, You agree to Stripe's terms of service and privacy policy. Provider does not directly store Your full credit card information; payment data is handled securely by Stripe in accordance with PCI DSS standards. You authorize recurring charges for Your selected billing cycle.

4.3 Payment Terms

Subscriptions automatically renew unless cancelled
Fees are billed in advance for each billing period
You are responsible for all applicable taxes
Price changes will be communicated with 30 days notice
No refunds will be provided except as required by applicable law

4.4 Non-Payment and Grace Period

If a recurring payment fails, Provider will notify You and Your subscription will enter a 7-day grace period beginning on the date payment was due. During the grace period:

Your subscription remains active and You retain full access to paid features
You may update Your payment method or provide a new one to resolve the failed payment
If a valid payment is successfully processed during the grace period, Your subscription will be reactivated and Your original billing cycle will be preserved (e.g., if Your billing date was the 15th of the month, it will remain the 15th)
You will receive a confirmation email upon successful payment recovery

If You do not resolve the payment failure within the 7-day grace period, Your subscription will be cancelled and non-payment may further result in:

Suspension of access to paid features while Your account remains active
Termination of Your account if payment is not resolved within a reasonable period
Loss of access to cloud-stored project metadata after the retention period described in Section 11.4

Provider reserves the right to modify the duration of the grace period at any time with reasonable notice.

4.5 Cancellation

You may cancel Your subscription at any time. Upon cancellation:

Access to paid features will cease at the end of the current billing period
No refunds will be provided for partial billing periods
Your content and settings will be retained for 90 days in our cloud systems
Locally stored content (including .rdln files and PDFs) remains on Your device

4.6 Free Trial

New users may be eligible for a free trial period. No payment method is required during the trial. At the end of the trial, the subscription will not automatically convert to a paid plan unless explicitly authorized by You.

5. Support Services

5.1 Support Tiers

Support services are provided based on Your subscription tier:

Lite: Email support with 5-7 business day response
Pro: Priority email support with 2-3 business day response
Pro+: Premium support with 24-hour response time

Support does not include training, customization, or consultation services.

6. Data and Privacy

6.1 Data Storage

Your PDF documents and markup annotations are primarily stored locally on Your device in the browser or in .rdln files. When cloud features are enabled, content may also be stored in Your connected cloud storage accounts (Google Drive, OneDrive). We store only metadata (e.g., project settings, collaboration details) on our servers to enable Service features. We do not store User Content (PDFs, markup files) on our servers.

6.2 Data Collection

The Service may collect the following types of data:

Account Information: Email address, display name, authentication provider
Subscription Data: Subscription tier, payment status, billing history
Usage Data: Analytics and diagnostic information to improve the Service
Project Metadata: Project name, collaborator lists, sheet information, markup statistics (not markup content)
User Preferences: Tool settings, templates, style presets, grid and viewer settings

6.3 Browser Storage

The Service stores certain data in Your browser's local storage, including:

Authentication tokens (JWT)
Cloud storage access tokens for connected accounts
User preferences and tool settings
Temporary session data

You can clear this data at any time through Your browser settings.

6.4 Privacy

Provider is committed to protecting Your privacy. Our Privacy Policy describes how We collect, use, and protect Your information. By using the Service, You consent to the data practices described in the Privacy Policy.

7. Third-Party Services

7.1 Cloud Infrastructure

The Service is hosted on Microsoft Azure infrastructure, including Azure Static Web Apps, Azure Cosmos DB, Azure Blob Storage, and Azure Key Vault. Your data stored on Provider's servers is subject to Microsoft Azure's security and compliance practices.

7.2 Authentication Services

The Service supports authentication through the following third-party providers:

Google (OAuth)
Microsoft / Azure AD (OAuth)

When You authenticate via a third-party provider, You authorize that provider to share certain profile information (such as name and email) with the Service. Use of these authentication services is subject to each provider's terms of service and privacy policy.

7.3 Cloud Storage Integration

The Service integrates with third-party cloud storage services:

Google Drive — via Google Drive API (requires Google account authorization)
Microsoft OneDrive — via Microsoft Graph API (requires Microsoft account authorization)

When You connect a cloud storage account, the Service accesses files and folders in Your cloud storage to read, write, and share PDF and markup files. The Service uses the Google drive.file scope, which limits access to files You explicitly open or create with RED LINE PDF. The Service stores OAuth tokens (access and refresh tokens) locally in Your browser to maintain the connection. You can disconnect cloud storage accounts at any time. Use of Google Drive data is governed by the Google API Services User Data Policy, including its Limited Use requirements, as described in our Privacy Policy.

7.4 OCR and AI-Powered Features

The Service provides optical character recognition (OCR) capabilities powered by Microsoft Azure Computer Vision (Read API). When You use OCR features:

Selected PDF pages are converted to images and transmitted to Microsoft Azure Computer Vision servers for text extraction
Extracted text (such as title block metadata) is returned to the Service and may be stored in project data
Microsoft Azure processes this data in accordance with their data processing agreements and privacy practices; we do not retain image fragments after processing
You should not submit documents containing sensitive, confidential, or classified information to the OCR service unless You have verified compliance with applicable data handling requirements

7.5 Third-Party Disclaimer

Third-party integrations (Google Drive, Microsoft OneDrive, Microsoft Azure, Stripe) are governed by their respective terms and privacy policies. Provider is not responsible for third-party services, including their availability, data loss, security issues, or any other aspect of their operation.

7.6 Email Communications

The Service uses Azure Communication Services to send transactional emails, such as:

Collaboration invitations to project collaborators
Account verification emails

Collaborator email addresses provided by You are used solely for the purpose of delivering these communications.

7.7 Payment Processing

Payment for subscriptions is processed by Stripe, Inc. as described in Section 4.2.

8. Copyright Infringement (DMCA)

8.1 Respect for Intellectual Property

Provider respects intellectual property rights and complies with the Digital Millennium Copyright Act (DMCA). If You believe that User Content accessible through the Service infringes Your copyright, You may submit a notice to our designated agent.

8.2 DMCA Notice Requirements

A valid DMCA notice must include:

Your physical or electronic signature, or that of an authorized agent
Identification of the copyrighted work claimed to have been infringed
Identification of the allegedly infringing material and its location within the Service
Your contact information (address, telephone number, and email address)
A statement that You have a good faith belief that the use is not authorized by the copyright owner, its agent, or the law
A statement, under penalty of perjury, that the information in the notice is accurate and that You are the copyright owner or authorized to act on behalf of the owner

8.3 Designated Agent

DMCA notices should be sent to: dmca@archcorelab.com

8.4 Counter-Notices

If You believe Your content was removed in error, You may submit a counter-notice containing:

Your physical or electronic signature
Identification of the removed material and its prior location
A statement under penalty of perjury that the material was removed by mistake or misidentification
Your name, address, telephone number, and consent to jurisdiction of the federal court in Your district

8.5 Repeat Infringers

Provider reserves the right to terminate the accounts of users who are repeat copyright infringers.

9. Collaboration Features

9.1 Project Sharing

The Service allows You to create projects and invite collaborators. When You share a project:

Collaborator email addresses and display names are stored on Provider's servers
Collaborators are assigned roles (Owner, Editor, or Viewer) that control their access level
Invitation emails are sent to collaborators via the email address You provide

9.2 Cloud Folder Sharing

When collaboration is enabled with cloud storage:

Shared folders may be created in Your Google Drive or OneDrive account
Collaborators may be granted access to these shared folders through the respective cloud provider's sharing mechanisms
File sharing permissions are managed by the cloud storage provider's policies

9.3 Markup Synchronization

The Service synchronizes markup metadata (such as markup IDs, counts, and completion status) between collaborators via Provider's servers. Full markup content is stored in .rdln files in the user's chosen storage location (local or cloud), not on Provider's servers.

9.4 Collaborator Responsibilities

When inviting collaborators, You are responsible for:

Obtaining appropriate consent before sharing collaborator email addresses with the Service
Ensuring collaborators are authorized to access the shared documents
Managing collaborator permissions appropriately

10. Service Warranty and Liability

10.1 Service Disclaimer

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. PROVIDER DOES NOT GUARANTEE UPTIME, AVAILABILITY, OR UNINTERRUPTED ACCESS TO THE SERVICE.

10.2 Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, PROVIDER SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL, INDIRECT, CONSEQUENTIAL, OR PUNITIVE DAMAGES ARISING OUT OF OR RELATED TO THE SERVICE.

PROVIDER'S TOTAL LIABILITY UNDER THESE TERMS SHALL NOT EXCEED THE GREATER OF: (A) THE AMOUNT PAID BY YOU FOR THE SERVICE IN THE TWELVE (12) MONTHS PRECEDING THE CLAIM, OR (B) ONE HUNDRED U.S. DOLLARS ($100).

PROVIDER SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE RESULTING FROM: (A) DATA TRANSMITTED TO THIRD-PARTY SERVICES INCLUDING OCR PROCESSING; (B) UNAUTHORIZED ACCESS TO YOUR ACCOUNT DUE TO COMPROMISED CREDENTIALS; (C) ACTIONS TAKEN BY COLLABORATORS WITH WHOM YOU HAVE SHARED ACCESS; (D) THIRD-PARTY CLOUD STORAGE SERVICE OUTAGES OR DATA LOSS; (E) SERVICE DOWNTIME, UNAVAILABILITY, OR INTERRUPTIONS, WHETHER SCHEDULED OR UNSCHEDULED; OR (F) ANY INTELLECTUAL PROPERTY INFRINGEMENT IN USER CONTENT.

Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to You.

10.3 Indemnification

You agree to indemnify, defend, and hold harmless Provider and its officers, directors, employees, and agents from and against any claims, liabilities, damages, losses, and expenses, including reasonable attorney's fees, arising out of or in any way connected with: (a) Your use of the Service; (b) Your User Content, including any intellectual property infringement claims; (c) violation of these Terms; (d) infringement of any third-party rights through content You process, store, or share using the Service; or (e) Your violation of any applicable law or regulation.

11. Account Termination and Suspension

11.1 Termination by You

You may terminate Your account at any time by contacting support@archcorelab.com.

11.2 Suspension

Provider may suspend Your access to the Service, in whole or in part, at any time for:

Violation of any term of these Terms or the EULA
Non-payment of subscription fees
Suspected fraudulent or abusive activity
As reasonably necessary to protect the Service, other users, or Provider

Provider will make reasonable efforts to notify You of a suspension and the reason for it.

11.3 Termination by Provider

Provider may terminate Your account immediately if You:

Breach any material term of these Terms
Fail to pay subscription fees when due after reasonable notice and opportunity to cure
Use the Service in a manner that creates legal liability for Provider
Are identified as a repeat copyright infringer under Section 8.5

Provider may also terminate at its discretion with 30 days written notice.

11.4 Effect of Termination

Upon account termination:

Your access to the Service immediately ceases
Your software license under the EULA is also terminated
Your locally stored files (PDFs and .rdln files) remain on Your device
Cloud-stored project metadata will be retained for 90 days, then permanently deleted
Sections 2, 3, 6, 8, 10, 11.4, and 12 shall survive termination

12. General Provisions

12.1 Governing Law

These Terms shall be governed by and construed in accordance with the laws of the State of Illinois, United States, without regard to its conflict of law provisions.

12.2 Dispute Resolution and Arbitration

Any disputes arising from or relating to these Terms or the Service shall be resolved through:

Good faith negotiation between the parties for a period of at least thirty (30) days
If negotiation fails, binding arbitration administered by the American Arbitration Association ("AAA") under its Commercial Arbitration Rules, conducted in Chicago, Illinois

Class Action Waiver: YOU AND PROVIDER AGREE THAT EACH MAY BRING CLAIMS AGAINST THE OTHER ONLY IN YOUR OR ITS INDIVIDUAL CAPACITY, AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY PURPORTED CLASS, CONSOLIDATED, OR REPRESENTATIVE PROCEEDING. THE ARBITRATOR MAY NOT CONSOLIDATE MORE THAN ONE PERSON'S CLAIMS AND MAY NOT OTHERWISE PRESIDE OVER ANY FORM OF A CLASS OR REPRESENTATIVE PROCEEDING.

If this class action waiver is found to be unenforceable, the arbitration agreement shall be null and void, and disputes shall be resolved in the state or federal courts located in Cook County, Illinois.

12.3 Entire Agreement

These Terms, together with the EULA and Privacy Policy, constitute the entire agreement between You and Provider concerning the Service.

12.4 Amendments

Provider reserves the right to modify these Terms at any time. Changes will be effective upon posting to the Service or Our website. Continued use of the Service after changes constitutes acceptance of the modified Terms. Material changes will be communicated with reasonable notice.

12.5 Severability

If any provision of these Terms is found to be invalid or unenforceable, the remaining provisions shall remain in full force and effect.

12.6 Waiver

No waiver of any breach of these Terms shall be deemed a waiver of any other or subsequent breach.

12.7 Assignment

You may not assign or transfer these Terms without Provider's prior written consent. Provider may assign these Terms without restriction.

12.8 Force Majeure

Neither party shall be liable for delays or failures in performance caused by events beyond reasonable control, including but not limited to: natural disasters, wars, terrorism, riots, embargoes, acts of civil or military authorities, fire, floods, accidents, pandemics or epidemics, strikes, shortages of transportation, facilities, fuel, energy, labor, or materials, failure of telecommunications or internet infrastructure, or governmental actions. The affected party shall notify the other party promptly and resume performance as soon as reasonably possible.

12.9 Contact Information

Email: support@archcorelab.com
DMCA Agent: dmca@archcorelab.com
Website: www.archcorelab.com

13. Acknowledgment

By creating an account or using the Service, You acknowledge that You have read these Terms, understand them, and agree to be bound by their terms and conditions, as well as the EULA and Privacy Policy.