SAG / ARCHITECTURE NOTE
HTML ZIP Analysis: Why Check the Source Before Crawling?
A collection method that reads a set of webpage HTML files through a restricted input path and turns them into documents needed for diagnosis. When a public site has changed or external access is restricted, it is difficult to verify previous source material using only the current page. An approved source bundle is the starting point for establishing what was analyzed.
What Is HTML ZIP Collection?
It is a collection method that reads a set of webpage HTML files through a restricted input path and turns them into documents needed for diagnosis. This note considers HTML ZIP collection in terms of the responsibilities of input, transformation, and output, rather than as a feature name. To trust the analysis results, it must be possible to trace what materials were received, what was checked, and how far the conclusions can go.
Why Is This Technology Needed?
When a public site has changed or external access is restricted, it is difficult to verify previous source material using only the current page. An approved source bundle is the starting point for establishing what was analyzed.
Design Principles and Data Flow
Rather than trusting the file extension alone, validate archive entries, sizes, and paths before reading permitted HTML. Body normalization and diagnostics should be performed without executing files.
Approved HTML ZIP → Input validation and normalization → Page-by-page diagnostics
Each stage should not relabel the success of the previous stage as an achievement of the next. Recording identifiers, periods, and validation status for the materials throughout the process helps locate omissions and errors and determine what needs to be checked again.
Connection to the SAG Architecture
SAG data registration reads HTML ZIP files and connects them to page-analysis materials. This is separate from extracting an archive into a server directory and running scripts.
SAG’s operational value lies in connecting this relationship to pages and questions, comparison results, and improvement tasks. Rather than reading only numbers, customers can review both what needs to be improved and the grounds for making that judgment. Patterns that require additional application should be read with the scope of the relevant paragraph in mind.
Illustrative Example and Evaluation Criteria
For illustration, consider a ZIP containing three product HTML files. The fact that three files were received is different from the claim that three products appeared in search results. Each file must be linked to a URL and collection time so that subsequent diagnostics can be traced.
The example above is for explaining structure and calculations; it does not represent measured results from a specific customer. An actual report must link the selected period, target, observation conditions, and source records so that the same judgment can be checked again.
Practical Verification Checklist
| Flow stage | Items to check |
|---|---|
| Approved HTML ZIP | Exclude executables and secrets |
| Input validation and normalization | Check size limits after extraction |
| Page-by-page diagnostics | Check the mapping between page URLs and files |
Check that the same meaning is maintained not only for valid inputs, but also for empty, duplicate, and differently conditioned materials. Connecting verification items to completion criteria can reduce the gap between feature descriptions and actual operations.
Limitations and Points to Consider in Application
API data that is not in the HTML, or content available only after login, cannot be restored from a ZIP alone. It is important to record the accessible scope and analysis gaps in the report.
Research and Official Documentation
- OWASP File Upload Cheat Sheet — Security design guidance for reviewing permitted upload formats and resource limits.
External materials provide background on the design topics above; they do not certify every SAG implementation or customer outcome. The interpretation of how to apply this note and the illustrative example are based on the SAG operational structure. Materials checked: 2026-10-06.
Further Reading and Feature Information
- Related architecture note
- Try the service connected to HTML ZIP collection
- Feature-specific FAQ
- Discuss implementation scope
How to Continue Reading About This Technology
Follow the sequence: HTML ZIP and sitemap → normalization → page version → evidence record.
SAG / KNOWLEDGE LINKS