SEO4Ajax vs WebCrawler Pro
SEO4Ajax
seo4ajax.comWebCrawler Pro
webcrawler.proSide by side
| Figure | SEO4Ajax | WebCrawler Pro |
|---|---|---|
| Price from | $29/mo | $1/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | Yes | — |
| Self-hosted | — | Yes |
| Plans published | 8 | 7 |
| Spec score · Technical SEO Software | 8.0 (#18) | 8.6 (#6) |
| Headquarters | Rennes, France | Rădășeni, Suceava, Romania |
| Support | The pricing page lists community support for Developer and email support with 48-hour or 24-hour response times on paid plans. | The contact page says it aims to reply within 1–2 business days, with bug reports and crawl issues usually answered faster. |
| What it does | SEO4Ajax implements dynamic rendering to make AJAX content visible to search engines and social networks. | WebCrawler Pro crawls websites and scores pages for technical SEO, answer-engine readiness, and generative-engine citation signals. |
Plans
SEO4Ajax
- Developer PlanFree
- Project Plan$29 a month
- Premium (Project Plan features)$39 a month
- Growth Plan$99 a month
- Premium (Growth Plan features)$132 a month
- Business Plan$199 a month
- Premium (Business Plan features)$265 a month
- Custom PlanPriced on request
WebCrawler Pro
- Free guestFree
- Free signed inFree
- Paid tokens$1 a month
- Free daily allowanceFree
- GuestFree
- Signed-inFree
- Prepaid crawl tokens$11,000, paid once
In their own words
SEO4Ajax
SEO4Ajax uses dynamic rendering to make AJAX content visible to search engines and social networks. It can be configured on Apache, nginx, PHP, Java EE, Ruby, Python and Node.js servers, and supports frameworks including React, Vue.js, Angular, AngularJS, GWT, Ember and Backbone. The service says it can handle thousands or millions of pages without website code changes. Its REST API supports customization and automation, while a dashboard tracks bot activity, cache freshness, duplicates and broken links. SEO4Ajax caches snapshots, can capture inner links, and supports custom recache periods and email alerts for quota overages, scraping errors or unreachable websites. SEO reports flag indexing issues such as broken links, duplicates and invalid hreflang tags. The Developer plan is free, with 1,000 pages and 2,500 snapshots per month. Paid plans start at $29/mo (annual), and include email support at listed response times. The service is for business use, not personal, family or household use.
WebCrawler Pro
WebCrawler Pro crawls websites and scores pages for technical SEO, answer-engine readiness (AEO) and generative engine optimization (GEO). Technical checks include titles, meta descriptions, H1s, canonicals, Open Graph tags, response times, page size, duplicate content, orphan pages and thin content. AEO checks include FAQ schema and question-based headings; GEO checks cover author attribution, freshness, factual density, authority links and original-research signals. Reports include crawl-depth charts, score distributions, response-time histograms, page breakdowns and site summaries, with PDF, CSV and JSON exports. Signed-in users can draft titles, FAQs, JSON-LD, alt text, internal links and llms.txt using a hosted model or their own API key. HTML mode fetches server responses; DOM Render executes JavaScript before extracting content. Guests receive 50 requests/day and signed-in users 100 requests/day. Paid tokens are listed at $1 a month. It supports Linux, macOS, Windows, web and self-hosting. Pages behind login walls, blocked by robots.txt or protected by advanced bot detection may not be fully crawlable.