SEO by Daniel vs Seolyzer

Seolyzer is a French crawl and log-analysis tool. It runs crawl data and real-time server logs next to Google Search Console, which helps when you need to know how Googlebot behaves on a site you manage. SEO by Daniel is a scored audit from one URL that ends in a client-ready report. Seolyzer is for the person debugging a crawl. SEO by Daniel is for the person who has to explain the result.

Where Seolyzer wins

• Real-time log analysis. It shows crawler behaviour as it happens on your server, not a week later in a spreadsheet.
• Search Console fusion. Crawl and GSC data sit together, so you can connect impressions and indexing to what Googlebot is actually fetching.
• Technical depth. Crawl-budget and log insights go well past what a standard audit checks.
• EU hosting. Seolyzer is France-hosted, which some European clients ask for by name.
• Built for specialists. The output assumes you know your way around a log file. That is the audience it serves.

Where SEO by Daniel wins

• Instant result. A 0-100 homepage score in about two seconds, with no account. Just drop in a domain.
• Sitemap auto-discovery. We read robots.txt, follow nested sitemap indexes and handle gzipped sitemaps, so every page is found without manual work.
• A client-ready report. Executive summary, issues grouped by severity and CSV export, ready to hand over.
• Monitoring on a schedule. We re-scan and catch regressions. Seolyzer is a tool you open to investigate a problem.
• Transparent pricing. OnCrawl and Seolyzer both keep pricing behind a demo. Ours starts at €19/month and is listed.

A real example

You are a consultant with a French e-commerce client. The client keeps saying a category page fell out of Google, and the server team swears nothing changed. This is Seolyzer's kind of problem. You ask for a week of access logs, load them into Seolyzer, and watch Googlebot hits in real time. It turns out a deploy added a redirect that returns a soft 404 to Googlebot while serving the page to browsers. No crawl report would have made that obvious. You give the server team the log line and the fix ships.

The same client has a new marketing lead who wants a monthly site-health number for the leadership meeting. She does not want a log console, and she is not going to read a crawl diff. You run SEO by Daniel on the domain, get the 0-100 score and the severity-grouped issues, export the CSV for your own tracking, and send her the report. It takes less time than the meeting agenda.

Neither task replaces the other. Seolyzer finds what a server is doing to Googlebot. SEO by Daniel tells a client what is wrong with the site and what to fix first. A freelancer can hold both without doubling any work.

The verdict

| | Seolyzer | SEO by Daniel | |---|---|---| | Best for | Real-time log and crawl analysis | Scored client reports | | Reads server logs | Yes | No | | Search Console data | Fused into the tool | Not the focus | | Free scan without an account | No | Yes | | Client-ready report | No | Executive summary, severity grouping, CSV | | Pricing | Demo-gated, check current plans | €19/mo entry | | Time to first output | Setup plus log access | About two seconds |

When to pick which

Pick Seolyzer when the job is technical diagnostics: logs, crawl budget, indexing, and how Googlebot behaves on a site where you control the server. If you need to prove a redirect issue to a hosting team, log data is the evidence a scored report cannot give you.

Pick SEO by Daniel when you need a fast score and a document a client will read, or when you want monitoring across sites without opening a console. The €19 entry tier is aimed at freelancers who resell the output, not at specialists doing forensics.

FAQ

Does Seolyzer need server access? Real-time log analysis needs logs from the server, so yes, you or the client must provide them. SEO by Daniel only needs a domain.

Can I resell a Seolyzer report to a client? Seolyzer produces analysis, not a customer-facing deliverable. SEO by Daniel produces the executive summary and CSV export as the product.

Is SEO by Daniel a replacement for Seolyzer? No. If log analysis is on the list, keep Seolyzer. SEO by Daniel covers the scored report and monitoring side of the same client.

See what your own site scores with a free scan, no account needed.