How to Improve Your SEO Agency Partnership: A Practical Checklist for Technical Audits, On-Page Optimization, and Performance

You’ve hired an SEO services agency, or you’re about to. The pitch sounded great—better rankings, more traffic, a healthier website. But six months in, results feel slow, and you’re not sure what’s actually happening under the hood. The problem isn’t always the agency’s competence; often, it’s the brief. A vague or incomplete brief leads to mismatched expectations, wasted budget, and technical fixes that don’t move the needle. This checklist walks you through what a strong improvement-focused brief looks like, covering technical SEO, on-page optimization, and performance metrics—without relying on guarantees or black-hat shortcuts.

Step 1: Start with a Technical SEO Audit—Know What’s Broken

Before any optimization, you need a clear picture of your site’s current health. A technical SEO audit isn’t a one-time checkbox; it’s the foundation. The agency should crawl your site, identify crawl budget issues, check for duplicate content, and verify that search engines can access your important pages.

What to include in your brief:

• Request a full crawl report using tools like Screaming Frog or Sitebulb.
• Ask specifically about crawl budget allocation: are low-value pages (thin content, paginated archives) wasting Google’s resources?
• Require a duplicate content analysis: check for missing or misconfigured canonical tags, URL parameter issues, and HTTP/HTTPS inconsistencies.
• Demand a robots.txt review: ensure critical pages aren’t blocked, and that the file isn’t accidentally disallowing search engines from key sections.
• Verify XML sitemap submission: is it up-to-date, includes only canonical URLs, and excludes noindex pages?

Risk note: Avoid agencies that promise “instant SEO results” or claim they can fix everything in a week. A proper audit takes time—expect a detailed report with prioritized issues, not a one-page summary.

Step 2: Map Core Web Vitals to User Experience—Don’t Just Chase Scores

Core Web Vitals—LCP (Largest Contentful Paint), INP (Interaction to Next Paint, replacing FID), and CLS (Cumulative Layout Shift)—are now ranking signals, but they’re also direct user experience metrics. A high LCP score doesn’t matter if your page takes five seconds to load on mobile.

Brief checklist for performance:

• Ask the agency to baseline your current Core Web Vitals using field data (Chrome User Experience Report) and lab data (Lighthouse, PageSpeed Insights).
• Specify that improvements should target real-world performance, not just lab scores. For example, deferring third-party scripts (like analytics or ads) can improve INP but may require trade-offs.
• Request a plan for optimizing LCP: server response time, image optimization, and render-blocking resources. Link to our guide on deferring async scripts for details.
• Include a CLS fix checklist: set explicit width/height on images, avoid inserting content above existing content (e.g., late-loading ads), and use CSS `aspect-ratio`.
• For INP, request an audit of event handlers and long tasks. Third-party scripts are a common culprit—see our breakdown of third-party scripts performance.

Table: Common Core Web Vitals Issues vs. Agency Solutions

Step 3: On-Page Optimization—Align Content with Search Intent

On-page SEO isn’t just about stuffing keywords into title tags. It’s about matching content to user intent—informational, navigational, commercial, or transactional. A good agency will conduct keyword research and intent mapping before writing a single line.

Brief elements to include:

• Request a keyword research report that groups terms by intent, not just volume. High-volume keywords with transactional intent might convert better than broader informational terms.
• Ask for an intent mapping document: for each target page, define the primary intent and the content format (blog post, product page, guide, video).
• Specify that duplicate content across similar pages (e.g., product variants) should be handled with canonical tags or consolidation.
• Require a content gap analysis: what questions are your competitors answering that you aren’t?

Risk note: Beware of agencies that promise “we’ll optimize all your pages in a week.” Real on-page optimization involves rewriting or restructuring content, not just changing meta descriptions. Poor intent mapping can lead to high bounce rates if users land on a page that doesn’t match what they searched for.

Step 4: Build a Link Profile That Earns Trust, Not Penalties

Link building remains a key ranking factor, but the landscape has shifted. Low-quality, spammy backlinks (often sold as “black-hat links” or “private blog networks”) can trigger manual actions or algorithmic penalties. Your brief should emphasize quality over quantity.

What to ask your agency:

• Request a backlink profile audit: identify toxic links using tools like Majestic (Trust Flow, Citation Flow) or Ahrefs. Look for links from irrelevant sites, link farms, or paid networks.
• Define a target Domain Authority (DA) or domain rating range for outreach. While DA isn’t a Google metric, it’s a useful proxy for site quality.
• Specify that all link building should be white-hat: guest posting on relevant sites, broken link building, resource page additions, and digital PR.
• Ask for a monthly report on acquired links, including domain authority, relevance, and traffic potential.

Table: Link Building Approaches—Safe vs. Risky

Risk note: Avoid any agency that guarantees a specific number of backlinks per month or promises “first page ranking” through link building alone. Quality links take time to acquire, and a sudden spike in low-quality links can trigger a manual penalty.

Step 5: Monitor and Iterate—Performance Tracking That Matters

The final piece of your brief is how success will be measured. Vanity metrics like total traffic or keyword rankings (without context) can hide real problems. Instead, focus on conversion-related KPIs and technical health.

Performance tracking checklist:

• Set up a monthly reporting cadence that includes: organic traffic, conversion rate, Core Web Vitals scores, crawl errors, and index coverage.
• Require a comparison of your site’s performance against competitors using tools like SEMrush or Ahrefs.
• Ask for a quarterly technical audit update. The web changes—new plugins, design updates, or content additions can introduce issues.
• Include a section on risk management: what happens if a Core Web Vitals update negatively impacts your site? What’s the rollback plan?

Final thought: A strong SEO agency partnership isn’t about blind trust or quick fixes. It’s about a transparent, data-driven process where both sides understand the trade-offs. By structuring your brief around technical audits, user-focused performance, and ethical link building, you set the stage for sustainable growth—without the risk of penalties or wasted spend.

For deeper dives, check our guides on JavaScript blocking rendering and Interaction to Next Paint.