Ads.txt Checker

IAB Tech Lab Compliant

Spec

Total Lines

0entries

Processing 0 unique valid entries

Valid Entries

0lines

All entries are unique and valid

File Status

0errors

All entries passed validation checks

DIRECT accounts0

RESELLER accounts0

Quick Actions

Manage and export your validation results

Source Code

No Data to Analyze

Enter ads.txt lines in the editor, load from URL, or upload a file.

Ads.txt Checker

IAB Tech Lab Compliant

JavaScript Required

This application requires JavaScript to run. Please enable JavaScript in your browser to use the Ads.txt Checker.

About Ads.txt Checker

Ads.txt Checker is a comprehensive, free tool designed to validate, parse, and analyze ads.txt files against IAB Tech Lab standards with real-time feedback and visual reporting. Perfect for publishers, ad tech companies, and digital advertising professionals.

Key Features

Real-time ads.txt validation - Instant feedback on your ads.txt file
IAB Tech Lab compliance checking - Ensure your file meets official standards
Duplicate detection and removal - Identify and clean up duplicate entries
Master file comparison mode - Compare your ads.txt against a master list
Export validated files - Download cleaned, validated ads.txt files
Visual error reporting - See exactly where issues occur with color-coded feedback
Line-by-line parsing - Detailed analysis of every entry in your file

Learn More

For detailed information about the ads.txt specification and implementation guidelines, visit:

IAB Tech Lab - Ads.txt Specification →