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Ads.txt Checker, Validator & Generator

Troubleshoot an ads.txt file from editing to publication. Validate pasted records, generate partner-supplied entries and check the live file served by your website or app developer domain.

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20 purpose-built toolsLocal-first privacyIndependent diagnostics

Build and troubleshoot your publisher advertising files

Use ADXKit to inspect ads.txt formatting, generate records supplied by your authorized partners and review app-ads.txt. Clear syntax is only the starting point: verify seller IDs and relationships with the advertising provider.

Ads.txt syntax validator · Ads.txt generator · App-ads.txt checker

Choose the right ads.txt tool for the problem

  1. Fix syntax before publishing

    Paste the text to investigate missing fields, relationship values, duplicates and supported directives.

  2. Build records from real partner details

    Enter the advertising-system domain and seller ID your partner supplied. Review the relationship before downloading.

  3. Check the published website file

    Inspect the live response after editing. Use the app-ads.txt checker when the file belongs to an app developer website.

Questions about ADXKit

Which tool helps with ads.txt not found?

Start with the live checker and confirm the exact domain and response. The pasted-text validator cannot tell whether a file was published.

Can I use a generated example seller ID?

No. Formatting a record does not authorize it. Use the exact seller details and commercial relationship supplied by your advertising partner.

Operated by Vivek Kushwah. Independent publisher utilities with transparent inputs and limitations. Read the method and official reference on each tool page.

Everything you need. Nothing you don’t.

Search, calculate, validate. Choose a tool to get started.

20 of 20 tools

Useful evidence. Clear limits.

Choose a tool, enter your own numbers or public website information, and review the result. Every report separates what was observed from what still needs a human review. No invented approval scores.

Your inputs stay yours.

Calculations and pasted-text checks run in your browser. Live scans send only your supplied public domain to the configured backend. We never ask for Google passwords, account access or API keys.

Publisher tools: methods & instructions

AdX Readiness Checker

Checks HTTPS, homepage text, recognizable policy links, ads.txt and indexing directives. A fetched link is evidence of a link, not a review of its contents.

Open AdX Readiness Checker →

AdSense Website Readiness

This advisory review cannot inspect your AdSense account, verify content rights or determine approval. Review Google policies manually.

Open AdSense Website Readiness →

Ads.txt Live Checker

Retrieves the root /ads.txt over HTTPS. Syntax does not prove seller authorization. Network failures and missing files are reported separately.

Open Ads.txt Live Checker →

Ads.txt Syntax Validator

Paste plain text to check three required seller fields, the optional certification ID and supported ads.txt 1.1 directives. Runs locally.

Open Ads.txt Syntax Validator →

Ads.txt Generator

Use the advertising-system domain and seller account ID supplied by your monetization provider. We never generate or verify real seller IDs.

Open Ads.txt Generator →

App-ads.txt Checker

Fetches /app-ads.txt from the supplied developer domain. App-store developer website links, ownership and package identity need separate verification.

Open App-ads.txt Checker →

Sellers.json Checker

Checks a domain’s root /sellers.json, or pasted JSON. Confidential entries may legitimately omit name and domain; confidentiality alone is not evidence of fraud. Files over 2 MB are explicitly refused by live scans.

Open Sellers.json Checker →

SupplyChain Validator

Supports SupplyChain 1.0 objects and common bid-request wrappers. Validates ver, complete, nodes, asi, sid and hp. Structure alone cannot prove supply-chain authenticity.

Open SupplyChain Validator →

GAM Tag Inspector

Static heuristic inspection of pasted Google Publisher Tag code. The code is never executed. Dynamic paths, comments and variable-based sizes may need manual review.

Open GAM Tag Inspector →

CPM Calculator

CPM = advertising cost ÷ impressions × 1,000. Choose a currency shared by all money inputs. Reverse calculations solve cost or impressions.

Open CPM Calculator →

eCPM Calculator

eCPM = revenue ÷ impressions × 1,000. Uses realized revenue rather than a guaranteed auction price. Reverse calculations are supported.

Open eCPM Calculator →

Page RPM Calculator

Page RPM = estimated earnings ÷ page views × 1,000. Page views and ad impressions are different denominators; this tool calculates Page RPM only.

Open Page RPM Calculator →

CTR Calculator

CTR = clicks ÷ impressions × 100. Use matching reporting periods and scope. This calculator requires clicks not to exceed impressions.

Open CTR Calculator →

Fill Rate Calculator

Default definition: filled ad requests ÷ total ad requests × 100. Platforms may define fill differently; use matching request metrics, not impressions as a substitute.

Open Fill Rate Calculator →

Ad Revenue Calculator

Daily opportunities × assumed fill rate × CPM ÷ 1,000. If impressions are already served, set fill to 100% to avoid counting fill twice. Monthly projection uses 30 days.

Open Ad Revenue Calculator →

Revenue Share Calculator

Revenue × each party’s percentage. Shares must total 100%. The optional 88/12 split is an editable example, not a claimed industry or Google contract.

Open Revenue Share Calculator →

Viewability Calculator

Viewability = viewable ÷ measurable impressions × 100. Measurable impressions are those where viewability could be measured; they are not the same as all served impressions.

Open Viewability Calculator →

CPC Calculator

CPC = total advertising cost ÷ clicks. Choose a calculation mode to solve for CPC, total cost or clicks using a consistent currency.

Open CPC Calculator →

Ad Size Preview

Visual placeholders only: 300×250, 336×280, 320×50, 320×100, 728×90, 970×250, 160×600 and 300×600. Large previews scale down to fit; actual dimensions stay visible. No ads are requested.

Open Ad Size Preview →

Monetization Health Report

Rules-based suggestions use matching live scan results from this browser session and metrics you supply. No fabricated score, AI claim or official eligibility decision. Thresholds are diagnostic heuristics, not Google requirements.

Open Monetization Health Report →

Independent readiness assessment — not an official Google approval decision. Technical findings cannot establish content compliance, traffic quality or monetization eligibility.

Good questions. Straight answers.

Can ADXKit approve my website for AdX or AdSense?

No. Google or the applicable authorized process decides approval. ADXKit offers independent technical checks and manual-review guidance.

Why do live checks need a backend?

Browsers restrict many cross-origin website requests. A configured scanning backend retrieves permitted public files safely. Without it, live tools show “Live Scan Not Configured”; local tools remain usable.

Does a valid ads.txt file prove seller authorization?

No. Valid formatting only establishes that a file follows supported syntax. Confirm the account ID and commercial relationship with the advertising provider.

Are revenue projections guaranteed?

No. They are calculations from your assumptions. Actual demand, geography, viewability, consent, invalid traffic deductions and reporting definitions affect outcomes.

Can these tools rank in Google or appear in AI answers?

Useful original content and sound technical SEO support discovery, but rankings, indexing and AI recommendations are never guaranteed. Separate tool pages can be developed later with their own unique explanations and functionality.

Build Ads.txt for Multiple Partners Without Inventing Seller Records

By

An ads.txt generator should format verified seller details, not invent a demand network for your website. Start with records supplied by the advertising partners you actually use. Keep a note of who supplied each record and when it was reviewed.

Prepare a small source sheet

For each partner, record the advertising-system domain, your seller account ID, relationship and certification ID if supplied. Keep instructions for different sites separate. An ID copied from a tutorial or another publisher is not your account.

The IAB ads.txt resource explains the standard’s role. A valid-looking line is still only a declaration until the underlying relationship is correct.

Generate, inspect, then publish

  1. Open the ads.txt generator and enter one verified record.
  2. Use Add entry for another partner. Review the relationship rather than accepting a value by habit.
  3. Generate the text and read the output line by line.
  4. Use the syntax validator to review supported formatting findings.
  5. Keep a backup of the existing file before applying the reviewed text to your actual publishing setup.

The generator does not log into Blogger, WordPress or your ad platform. Downloading text is not the same as installing it. The tool rejects commas and newlines inside an individual field because those characters would change the record structure.

Compare two versions without guessing

Suppose a partner sends an updated account ID. Compare its old and new complete records and confirm whether the old record should remain. Do not remove another active partner merely because its line was absent from that message. This is a change-control example, not a recommendation to retain obsolete accounts.

Should I add many random sellers to increase revenue?

No. Record count is not a revenue strategy. Verify commercial authorization and use the provider’s instructions.

How do I confirm the installation?

Inspect the public file with the live ads.txt checker. For CMS-specific publishing questions, use your platform’s instructions and the Google ads.txt FAQs.

Official references

References checked: 26 October 2026. Examples identified as fictional are teaching inputs, not performance benchmarks.

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