A sorted list of technical on-page SEO best practices from 9elements, organized by HTML tags. It covers the title, meta description, heading, alt, canonical, Open Graph, responsive site meta and robots tags, with notes on recommended lengths and keyword use.
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Seodity is an SEO toolkit offering keyword research, competitor analysis, content generation with AI, rank tracking and backlink checking. Plans have monthly limits covering projects, tracked keywords, audits and AI articles.
SEOnaut is an open source SEO auditing and reporting tool. It crawls websites and checks for broken links, redirects, duplicated or missing meta tags, heading issues, hreflang problems and missing image alt attributes. The tool can be configured to crawl subdomains or sitemaps, follow nofollow links, check external links and access password-protected sites via HTTP Basic Authentication. It can also create WACZ archives of a site.
SEOPIX is a browser-based tool for compressing, resizing and editing JPEG and PNG images for the web. The site states that images are processed on the client side and are not uploaded, with no filesize limit. The tool is described as free.
SEOquake helps audit websites, improve search visibility, and monitor SEO or analytics performance.
SERPrecon is an SEO and GEO tool that reads search results and AI answers to diagnose whether content, intent or authority is limiting a page across Google, ChatGPT and Perplexity. It offers page reports with an Action Plan, content scoring before publishing, and Share of Voice tracking. A 7-day free trial is offered without a payment method.
Serpstat is a marketing tool for SEO and content tasks. It offers backlink analysis, rank tracking, keyword research, competitor analysis and site audits. The platform includes an API, keyword clustering and scheduled automatic checks. Paid plans include Individual, Team and Team x2, and a seven-day free trial of paid features is offered.
SerpWatch is an SEO rank tracking tool for marketers and agencies. It tracks keyword rankings, sends rank-drop notifications, and includes client management, white-label client portals, report building and a local rank tracker. Pricing is based on monthly keyword checks, with plans from $29 to $199 per month billed annually.
Server-side Rendering (SSR) Checker crawls websites to audit SEO, accessibility, performance, and technical page issues.
SiteAnalyzer is a website crawler for technical audits and SEO optimization. It scans site pages and checks more than 60 parameters, including broken links, duplicate pages, meta tags and server response codes. It offers integrations with Google Search Console, Yandex Webmaster and Yandex Metrica, internal PageRank calculation, site structure visualization and sitemap generation. A free version and a Pro plan are available.
Sitebulb is a website crawler for SEO audits, available as desktop software and a cloud service. It reports prioritized hints, audit comparison and JavaScript crawling. Desktop crawls up to 500,000 URLs per audit; cloud supports up to 10m URLs per audit with real-time team collaboration.
Social Trends helps audit websites, improve search visibility, and monitor SEO or analytics performance.
SpyFu is a competitor keyword research tool for Google Ads PPC and SEO. It allows users to view competitors' PPC and SEO keywords, ad tests, backlink profiles, and includes AI-powered site audits, daily performance tracking and an API.
Trends Tool helps audit websites, improve search visibility, and monitor SEO or analytics performance.
Ubersuggest helps audit websites, improve search visibility, and monitor SEO or analytics performance.
Whitespark offers software and services for local SEO. Its tools cover Google Business Profile management, local ranking grids, rank tracking, citation finding and review generation. Services include SEO and citation building for small businesses, agencies and multi-location enterprises.
Yandex Webmaster crawls websites to audit SEO, accessibility, performance, and technical page issues.
YouLinker helps audit websites, improve search visibility, and monitor SEO or analytics performance.
Zutrix is an SEO platform for rank tracking, keyword research, backlink monitoring, site audits and AI search visibility. It tracks keyword rankings daily and offers notifications and white-label reports. Pricing is monthly or yearly, and a 7-day trial costs $7.
Bing Webmaster Tools helps research keywords, search demand, related terms, and content opportunities for SEO.
Microsoft tool for monitoring website search performance, indexing status, and SEO insights.
Google Search Console helps monitor indexing, search performance, crawl data, and site visibility.
1000UserGuide is an open source tool or library for SEO, metadata, crawling, routing, or website optimization.
AccuRanker is an SEO rank tracking platform providing real-time data on tracked keywords, along with keyword research, competitor analysis, SERP analysis and reporting. AccuLLM tracks brand mentions, citations and sentiment across AI search tools such as ChatGPT, Perplexity, AI Overviews and AI Mode. The site states the platform includes unlimited users, domains and API calls.