工具精选
You can run a serious SEO operation for a long time before paying for software. The catch is knowing which free tools provide primary data rather than estimates, and which job each one actually covers. These six picks together span the full workflow: real search performance, keyword demand, technical crawling, page speed, structured data, and visitor behavior.
Google Search Console is the only place to see real queries, clicks, impressions, and indexing status straight from Google. Everything else in SEO software estimates what this reports directly. Verify your site and submit a sitemap before doing anything else; the data only accumulates after verification.
Google 官方工具，查看哪些关键词为网站带来流量、页面排名位置和收录情况。
查看工具详情: Google Search ConsoleGoogle Keyword Planner provides keyword ideas, volume ranges, and trend data from Google's own auction, free with a Google Ads account and no spend required. Volume buckets are broad without an active account, but as a directional demand check from the primary source, nothing free beats it.
官方关键词研究工具，查询搜索量、竞争度和出价建议，选词投放的起点。
查看工具详情: Google Keyword PlannerScreaming Frog's free version crawls up to 500 URLs with nearly the full feature set: status codes, titles, canonicals, directives, and broken links. For small sites that limit is no limit at all, and it teaches you how crawlers actually see your site better than any dashboard.
网站爬虫工具，扫描全站技术 SEO 问题：死链、重复内容、缺失 meta 标签、重定向链。
查看工具详情: Screaming FrogPageSpeed Insights combines real Chrome user field data with a Lighthouse lab run, reporting the Core Web Vitals that feed Google's page experience signals plus a concrete diagnostic list. Judge the site by field data and use the lab diagnostics as the fix list.
Google 官方页面速度测试工具，评估 Core Web Vitals 分数并给出具体优化建议。
查看工具详情: PageSpeed InsightsSchema Markup Validator checks whether your JSON-LD parses and conforms to Schema.org before Google's rich results systems ever see it. It is the fastest loop for debugging markup during development, paired with Search Console's enhancement reports for what Google indexed.
验证页面 JSON-LD 结构化数据格式是否正确，确保 Google 能读取并展示富结果。
查看工具详情: Schema Markup ValidatorMicrosoft Clarity adds the layer rankings cannot show: session recordings, heatmaps, and frustration signals like rage clicks, free without traffic limits. When a page ranks but does not convert, or engagement metrics sag, Clarity shows what visitors actually did.
微软出品的免费热力图和会话回放工具，直观展示用户在页面上的点击、滚动行为路径
查看工具详情: Microsoft ClarityFor your own site's performance, largely yes: Search Console, Keyword Planner, and Screaming Frog cover monitoring, demand research, and technical auditing. What you lose is competitive intelligence, since free tools cannot show a competitor's keywords, backlinks, or traffic at any useful depth. Most teams pay for a commercial platform precisely when competitor research becomes a regular part of the workflow.
Google Search Console on day one, because its data only starts accumulating after verification and cannot be backfilled. Then run a Screaming Frog crawl to catch technical problems while the site is small, and check your key templates in PageSpeed Insights. Keyword Planner and Clarity earn their place once there is content to plan and traffic to observe.
It is a strong free option for your own verified sites, covering site audit and limited backlink data, and pairs well with everything here. We kept the list to picks that are free without caveats across their core use; AWT is best understood as a free on-ramp to a paid platform, and it is worth installing alongside these tools.