# ads.txt Guru

> Professional ads.txt management, validation, and collaboration platform for publishers and ad networks. Eliminate manual errors, automate synchronization, and streamline collaboration between publishers and ad networks.

ads.txt Guru is a SaaS platform that simplifies ads.txt file management for website publishers and advertising networks. We provide automated validation, version control, FTP/WordPress integration, and publisher-network collaboration tools to prevent revenue loss from ads.txt errors.

## Product

ads.txt Guru helps publishers and ad networks manage ads.txt files without manual editing, FTP uploads, or coordination delays.

**Core Features:**
- **Online Management**: Web-based interface for managing ads.txt records across multiple domains
- **Built-in Validation**: Automatic validation eliminates errors that cause lost revenue
- **Auto-Sync**: One-click or automatic FTP/SFTP/WordPress uploads
- **Collaboration**: Publishers and ad networks share control of ads.txt records
- **Version Control**: Revert to any previous version instantly
- **Import**: Quickly import existing ads.txt files via URL, upload, or copy-paste
- **Free Hosting**: Optional ads.txt hosting at adstxt.guru/yourfile

## Who Uses This

**Publishers (Website Owners):**
- Manage ads.txt for multiple websites from one dashboard
- Collaborate with ad networks who update their own records
- Automatic validation prevents revenue-killing errors
- Version control for safety and compliance

**Ad Networks & Agencies:**
- Manage ads.txt records for multiple publisher clients
- Centralized dashboard for entire publisher portfolio
- Collaborator certification for publisher trust
- Flex records: unique publisher IDs per domain
- Per-domain reuse groups: one group renders DIRECT on your own domain and RESELLER + MANAGERDOMAIN on the publishers you resell into
- ROI: $450/year saves $15,600/year in labor (see blog)

## Plans

- **Basic (Free)**: 10 websites, unlimited collaborators, free hosting, WordPress integration
- **Publisher ($15/month or $150/year)**: Everything in Basic, plus unlimited websites, app-ads.txt files, FTP auto-sync, version control, and collaboration groups across up to 100 of your own websites
- **Ad Network ($45/month or $450/year)**: Everything in Publisher, plus collaboration groups that include other publishers' websites (up to 1,000 websites in all, more on request), collaborator certification, the whole API with no tokens to buy, and priority support

All paid plans include a 14-day free trial, no credit card required, and can be cancelled at any time.

## API

The ads.txt validator, the sellers.json validator and the comparison tool are available over a REST API, sold separately from the plans as prepaid tokens. 1,000 tokens are credited free when an account verifies its email address. Packs are $10 for 10,000 tokens, $45 for 60,000 and $150 for 250,000; tokens are valid for 12 months and are sold to businesses only. A validation (of an ads.txt or a sellers.json) costs 1 token, or 2 if we fetch the file; a comparison costs 1 token per domain compared. See [API documentation](https://adstxt.guru/support/api-documentation/).

## Free Tools

- **[ads.txt Validator](https://adstxt.guru/validator/)**: Validate any ads.txt file (URL, upload, or paste)
- **[ads.txt Comparison Tool](https://adstxt.guru/compare/)**: Compare two ads.txt files to see differences
- **[sellers.json Validator](https://adstxt.guru/sellers-json/)**: Check an SSP's or ad network's sellers.json against the IAB Tech Lab specification (by domain or paste), with every problem listed by seller_id and its IAB error code

## Documentation

### Getting Started
- [Getting Started Guide for Publishers](https://adstxt.guru/support/documentation/getting-started-publishers/)
- [Getting Started Guide for Ad Networks](https://adstxt.guru/support/documentation/getting-started-ad-networks/)

### Usage Documentation
- [Manage: Domains](https://adstxt.guru/support/documentation/manage/): Add and manage domains
- [Manage: Domain Records](https://adstxt.guru/support/documentation/manage-domain/): Add/edit/import ads.txt records
- [Manage: Domain Settings](https://adstxt.guru/support/documentation/manage-domain-settings/): Configure FTP, verification, auto-sync
- [Connect FTP](https://adstxt.guru/support/documentation/manage-domain-settings-ftp/): Automatic FTP/SFTP uploads
- [Connect WordPress](https://adstxt.guru/support/documentation/manage-domain-settings-wordpress/): WordPress integration
- [Connect Hosting](https://adstxt.guru/support/documentation/manage-domain-settings-hosting/): Free ads.txt hosting
- [Verify Domain](https://adstxt.guru/support/documentation/manage-domain-verify/): Domain ownership verification
- [Collaborate: Groups](https://adstxt.guru/support/documentation/collaborate/): Ad network group management
- [Collaborate: Group Records](https://adstxt.guru/support/documentation/collaborate-group/): Manage records for publisher groups
- [Collaborate: Group Settings](https://adstxt.guru/support/documentation/collaborate-group-settings/): Configure collaboration settings
- [Collaborate: DIRECT/RESELLER per Domain](https://adstxt.guru/support/documentation/collaborate-relationship-modes/): Apply one reuse group as DIRECT or RESELLER per domain, with automatic MANAGERDOMAIN
- [Collaborator Certification](https://adstxt.guru/support/documentation/collaborate-certification/): Become a trusted collaborator

### FAQs
- [Payment Methods](https://adstxt.guru/support/faq/payment-methods/)
- [Cancel or Change Membership](https://adstxt.guru/support/faq/change-membership/)
- [Cancellation and Refunds](https://adstxt.guru/support/faq/cancellation-and-refunds/)
- [Collaboration Limits](https://adstxt.guru/support/faq/collaboration-limits/)
- [Finding ads.txt Records](https://adstxt.guru/support/faq/finding-adstxt-records/)
- [Contact Records](https://adstxt.guru/support/faq/contact-record/)
- [API Access for Publishers](https://adstxt.guru/support/faq/publisher-api-access/)
- [Version Storage](https://adstxt.guru/support/faq/how-many-versions/)
- [FTP Security](https://adstxt.guru/support/faq/ftp-details/)

## Blog

Recent articles about ads.txt management:

- [New: a Free sellers.json Validator](https://adstxt.guru/blog/free-sellers-json-validator/) (Oct 2026): Check any SSP's or ad network's sellers.json against the IAB specification, with every problem listed by seller_id
- [What is an app-ads.txt File?](https://adstxt.guru/blog/what-is-an-app-ads-txt-file/) (Aug 2026): What an app-ads.txt file declares, and where it must be published for a verifier to find it
- [New: app-ads.txt Support for Apps and CTV](https://adstxt.guru/blog/app-ads-txt-support-for-apps-and-ctv/) (Aug 2026): Manage app-ads.txt files alongside your ads.txt files, in the same editor
- [One Reuse Group, DIRECT on Your Site and RESELLER on Publishers](https://adstxt.guru/blog/one-reuse-group-direct-and-reseller/) (May 2026): One reuse group renders DIRECT on your own domain and RESELLER + MANAGERDOMAIN on the publishers you resell into
- [New: Automate Hosting & WordPress Setup via API](https://adstxt.guru/blog/api-automation-for-agencies/) (Apr 2026): Set up hosting redirects and WordPress publishing for a new domain over the API, without the dashboard
- [The Hidden ROI of ads.txt Management for Ad Networks](https://adstxt.guru/blog/ad-network-roi-professional-adstxt-management/) (Oct 2025): How professional management saves $15,600/year
- [Under New Management](https://adstxt.guru/blog/under-new-management-commitment-to-publishers-and-ad-networks/) (Aug 2025): Acquisition by Williams Initiatives Ltd
- [Appending Custom ads.txt Records](https://adstxt.guru/blog/appending-custom-adstxt-records/) (Mar 2021): Add custom records to generated files
- [New Collaboration Process](https://adstxt.guru/blog/new-collaboration-process/) (Feb 2021): Improved collaboration workflow
- [Goodbye Duplicate Records](https://adstxt.guru/blog/goodbye-duplicate-records/) (Nov 2020): Automatic duplicate detection
- [Publisher Plan Changes](https://adstxt.guru/blog/publisher-plan-changes-2020/) (Jul 2020): Updated pricing tiers
- [ads.txt Comparison Tool](https://adstxt.guru/blog/adstxt-comparison-tool/) (Jul 2020): New comparison feature
- [Collaborator Search & Flex Data Import](https://adstxt.guru/blog/collaborator-search-flex-data-import/) (Aug 2018): Search and import improvements
- [Ad Networks: Managing Publisher ads.txt Files](https://adstxt.guru/blog/ad-networks-managing-your-publishers-ads-txt-files/) (Jul 2018): Guide for ad networks
- [ads.txt Hosting, Certification ID Validation & More](https://adstxt.guru/blog/ads-txt-hosting-certification-id-validation-more/) (Jul 2018): Free hosting launch
- [Introducing Flex Records](https://adstxt.guru/blog/introducing-flex-records/) (Jul 2018): Unique publisher IDs per domain
- [The Perfect ads.txt File](https://adstxt.guru/blog/the-perfect-ads-txt-file/) (Jul 2018): Best practices
- [What is an ads.txt File?](https://adstxt.guru/blog/what-is-an-ads-txt-file/) (Jul 2018): Introduction to ads.txt

## Technical Details

**ads.txt Specification:** IAB Tech Lab Authorized Digital Sellers standard
**Supported Record Types:** Data records, subdomain variables, inventorypartnerdomain variables, managerdomain/ownerdomain variables, contact variables, comments
**Relationship Types:** DIRECT, RESELLER (per-domain override available on reuse groups)
**Integration Methods:** FTP, SFTP, WordPress plugin, free hosting, API
**Validation:** Real-time IAB spec compliance checking
**Storage:** Unlimited version history

## Support

- **Email**: contact@adstxt.guru
- **Live Chat**: Available on website
- **Knowledge Base**: https://adstxt.guru/support/
- **API Documentation**: https://adstxt.guru/support/api/

## Company

**Owner:** Williams Initiatives Ltd (acquired August 2025)
**Established:** 2018
**Location:** UK-based
**Mission:** Make ads.txt management simple and error-free

## Key Use Cases

1. **Publishers with Multiple Sites**: Manage 10-100+ domains from single dashboard
2. **Ad Networks Managing Publishers**: Centralize ads.txt for entire publisher portfolio
3. **Preventing Revenue Loss**: Validation catches errors before they cost money
4. **Publisher-Network Collaboration**: Networks update their records, publishers approve
5. **Compliance & Auditing**: Version control provides complete change history
6. **WordPress Users**: One-click sync without FTP credentials
7. **FAST/CTV/Streaming Services**: Manage complex inventorypartnerdomain structures

## Why ads.txt Matters

ads.txt files prevent ad fraud by declaring which advertising platforms are authorized to sell a publisher's inventory. Errors in ads.txt files cause programmatic ad exchanges to reject valid inventory, resulting in lost revenue. For a publisher doing $10,000/day in ad revenue, a single ads.txt error can cost thousands in lost income.

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**Website**: https://adstxt.guru
**Signup**: https://adstxt.guru/signup/
**Validator**: https://adstxt.guru/validator/
**Pricing**: https://adstxt.guru/pricing/