The playbook
JavaScript SEO: Checklist
Use this JavaScript SEO checklist before a new release, a handoff, or a scheduled review. Its purpose is to verify the decisions that affect routes with complete rendered content. Check an actual page or query record; a box marked complete without evidence does not show that the customer journey works.
Put the task in context
Load a deep URL directly rather than navigating from the homepage. Check whether the correct title, content, links, and status appear. Client-side navigation can mask a server-routing problem that a direct visitor or crawler encounters immediately.
Before you use the checklist
Name the exact item being checked and its purpose. Gather route, rendered content, metadata, response. If one of those details is unknown, mark it as unknown and assign a way to resolve it. An invented value makes the checklist look complete while weakening every later decision.
Working checklist
| Check | Evidence to keep | Responsible role |
|---|---|---|
| Compare source rendered output and browser content | A dated observation showing how route was verified | SEO lead |
| Test links metadata and route responses on deep pages | A dated observation showing how rendered content was verified | content or development owner |
| Inspect errors that prevent meaningful content from loading | A dated observation showing how metadata was verified | analytics owner |
Check the failure path
- Look specifically for this failure: returning the same empty shell or metadata for every route.
- Render page-specific content and validate direct URL access. Record the actual correction, not just the intention to make it.
- Repeat the affected task after the correction and check response.
- Make sure the next owner can find the decision and supporting evidence.
Use three outcomes for each check
Mark an item as complete only when the expected behavior or information has been observed. Mark it as incomplete when a required condition is absent. Use not applicable when the condition genuinely does not belong to the chosen scope, and write a short reason. These states keep a review useful without forcing every process into an identical mold.
For example, if the check is “Compare source rendered output and browser content,” a meeting about the subject is not the evidence itself. Retain the relevant route and rendered content, the decision made from them, and the result of checking that decision. The record should allow someone who missed the meeting to understand what changed.
Decide what must be resolved first
An incomplete item that prevents ensure important content and navigation remain available when a site relies on JavaScript deserves attention before a cosmetic improvement. Assign an owner and a next action to that issue. Keep optional refinements visible, but do not let them obscure a failure in the core process.
Close the review
Recheck corrected items and note anything still uncertain. The checklist is finished when the next owner understands what was verified and what remains open. Follow routes with complete rendered content using a consistent definition so later reviews can connect execution quality with useful results.
Keep a dated record of the page or query being examined. Search interfaces and external references can change. A saved observation should include enough context to distinguish an old issue from the current state.
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