SpiderNow

SpiderNow is a browser-based crawler that combines technical site audits, PageSpeed checks, and practical code and image utilities. It suits SEO agencies, developers, digital marketers, and businesses that need targeted or whole-site diagnostics without installing desktop software. It is less suitable as a complete SEO research suite or when large crawls exceed the working device’s memory.

Overview

SpiderNow scans individual pages, folders, or full websites, giving teams a useful range from one-page troubleshooting to broad technical reviews. Its audit engine checks broken links and images, JavaScript sites, redirects, duplicate content, internal and external links, and robots directives. That covers many implementation problems that can undermine discoverability, but there is no keyword research, rank tracking, backlink analysis, or competitor research. Users looking for market or ranking intelligence will need another product.

The crawler processes data in device memory, so available RAM determines practical crawl size. That makes hardware an important consideration for large sites, particularly on mobile devices. SpiderNow requires no download and says it works on mobile, iPad, and desktop devices, which is convenient for occasional checks and distributed teams.

Key features

PageSpeed Insights reviews each page across Performance, Accessibility, Best Practices, and SEO. This adds page-quality context to crawl findings and helps prioritize fixes beyond broken URLs or directives. Built-in tools minify and beautify HTML, JavaScript, and CSS, generate critical CSS, and convert images to WebP. They are useful for quick cleanup alongside an audit, although they do not replace a full development environment.

AI tools can recommend or implement content changes under the site's add-on terms. Content improvement uses Grammarly for spelling and grammar corrections, a practical editorial aid rather than a complete content strategy. Account and data protection uses SSL encryption, while payments are secured through Stripe. The support team is advertised as available around the clock and usually replies within a few hours. API services are being built and are expected shortly, so current API needs should be treated cautiously.

Pricing

SpiderNow uses a freemium model. The Free plan costs nothing, is billed Free forever, needs no credit card, and receives monthly usage refills. It allows 10 single-page scans per month, five scan-detail and issue views, and five page metric scores. That is enough for light spot checks, but the view and scoring caps can restrict investigation even when a scan is available.

Basic costs $6.99 a month and includes 500 full website scans, unlimited projects and websites, 10 AI credits, and two saved scans. It fits individuals or small teams that need recurring whole-site work, though the saved-scan and AI allowances remain modest. Standard costs $19.99 a month for 2,000 full website scans, unlimited projects and websites, 20 AI credits, and three saved scans, making it a more practical middle tier for agencies handling several sites. Advanced costs $39.99 a month and raises capacity to 15,000 full website scans, 50 AI credits, and six saved scans while retaining unlimited projects and websites. It is aimed at high-volume operations; users with occasional audits are unlikely to need its quota.

Platforms

SpiderNow supports android, API, extension, iOS, and web access. Its no-download approach allows use across mobile, iPad, and desktop devices. Because crawl processing relies on device RAM, platform portability does not remove the memory constraint.

Who it's for

SEO agencies can use the scan scope, technical checks, PageSpeed reports, and tiered quotas for client audits. Developers benefit from issue detection plus minification, beautification, critical CSS, and WebP conversion. Digital marketers and businesses get a way to diagnose site quality without installing software. It is not the right primary tool for keyword, backlink, ranking, or competitor research, and teams planning very large crawls should choose hardware and plan capacity carefully.

Pros and cons

• Pros: Page, folder, and full-site scans support both focused fixes and broad audits.
• Pros: Technical checks, four-part PageSpeed analysis, and coding/image utilities combine diagnosis with immediate production tasks.
• Pros: Browser access across mobile, iPad, and desktop avoids installation requirements.
• Cons: Crawl size depends on device RAM, which can limit large-site work.
• Cons: The free tier restricts scans, detail views, and metric scores, so serious investigation quickly requires payment.
• Cons: No keyword research, rank tracking, backlink analysis, or competitor research.
• Cons: API services are still being built, and AI features are subject to add-on terms.

Alternatives

Choose LibreCrawl if you want free, MIT-licensed software that can be self-hosted across API, Linux, macOS, web, and Windows. WebCrawler Pro is a fit when request-based access matters, with free guest and signed-in daily allowances plus paid tokens.

Open SEO Crawler suits users wanting a free, MIT-licensed, self-hosted crawler with unlimited URLs and no account or API key. Pick Screaming Frog SEO Spider for a desktop crawler whose free plan covers 500 URLs per crawl and whose paid licence removes that URL limit.

WebSite Auditor is preferable if you need project-based desktop software, a free 500-URL tier, and an optional annual Professional plan. A1 Website Analyzer offers Windows and macOS analysis with a free mode continuing after its 30-day evaluation period. Beam Us Up is a completely free crawler with no stated limits. Crab is an open-source Windows, macOS, and Linux option with no URL limits and no subscriptions.

Verdict

SpiderNow is a strong choice for teams that want browser-based technical crawling, PageSpeed analysis, and lightweight implementation tools in one place. Choose it when those combined audits matter more than broader SEO research and your devices can support the required crawl size. Look elsewhere for ranking and backlink intelligence, self-hosted open-source workflows, or unrestricted crawling without memory and plan quotas.