Internet Archive Links Policy in Free-Programming-Books: Contribution Guidelines Explained

When restoring unavailable resources via the Internet Archive's Wayback Machine, contributors must append *( :card_file_box: archived)* to the entry and use recent, complete snapshots.

The EbookFoundation/free-programming-books repository maintains strict formatting standards for Internet Archive links to ensure readers understand when they are accessing archived content rather than live sources. This policy ensures transparency while preserving access to valuable programming resources that have disappeared from their original hosts.

Repository Policy for Internet Archive Links

According to the contributor guidelines in docs/CONTRIBUTING.md, the repository accepts Internet Archive links only when they follow specific annotation requirements. The policy mandates clear labeling so users immediately recognize they are viewing historical snapshots rather than current websites.

The Archived Notation Requirement

Every entry linking to the Wayback Machine or similar archiving services must include the archived notation. As specified at line 59 of docs/CONTRIBUTING.md, contributors must add *( :card_file_box: archived)* after the resource description when "a resource is restored using the Internet Archive's Wayback Machine (or similar)."

This notation serves as a visual indicator that the content is preserved retrospectively and may not reflect the current state of the original website.

Snapshot Quality Standards

The guidelines emphasize selecting recent and complete snapshots rather than arbitrary historical versions. Contributors should choose the most recent archive date that contains the full content being referenced, ensuring readers access the most complete version available before the original site went offline.

How to Format Archived Entries in CONTRIBUTING.md

The proper syntax for archived entries is documented in the Archived link subsection of docs/CONTRIBUTING.md (lines 138-142). Entries must follow the standard markdown list format with the archived notation appended at the end.

Correct Formatting Example

* [A Way‑back Interesting Book](https://web.archive.org/web/20211016123456/http://example.com/) - John Doe (HTML) *( :card_file_box: archived)*

This renders as:

• A Way‑back Interesting Book - John Doe (HTML) ( :card_file_box: archived)

Incorrect Formatting Example

The following entry violates the policy because it lacks the required notation:

* [A Way‑back Interesting Book](https://web.archive.org/web/20211016123456/http://example.com/) - John Doe (HTML)

Entries missing the *( :card_file_box: archived)* suffix will not comply with repository standards and should be updated before submission.

Where This Policy Is Documented

The primary source for Internet Archive link requirements resides in docs/CONTRIBUTING.md, which contains both the general guidelines and specific formatting examples. Language-specific translations in docs/CONTRIBUTING-xx.md files (where xx represents the language code) replicate these same standards for non-English contributors.

When adding archived resources to list files like books/free-programming-books-en.md or other language-specific catalogs, always verify that your entry matches the syntax demonstrated in the contribution guide.

Summary

• Always append *( :card_file_box: archived)* to Internet Archive links to mark them as archived content.
• Select recent snapshots that contain complete versions of the original resource.
• Follow the exact markdown syntax specified in docs/CONTRIBUTING.md lines 138-142.
• Reference the primary documentation in docs/CONTRIBUTING.md (line 59) for the core policy statement.
• Check language-specific guides (docs/CONTRIBUTING-xx.md) when contributing to translated lists.

Frequently Asked Questions

What notation is required for Internet Archive links?

Contributors must append *( :card_file_box: archived)* immediately after the resource description. This specific string, including the asterisks and emoji shortcode, signals to readers that the link directs to an archived snapshot rather than a live website.

Where is the archived link policy documented?

The policy appears in docs/CONTRIBUTING.md at line 59, with detailed formatting examples provided in the Archived link subsection at lines 138-142. The repository maintains this documentation alongside other contribution standards to ensure consistent formatting across all language-specific book lists.

Can I use any Internet Archive snapshot?

No. The guidelines specify using recent and complete snapshots—specifically the most recent archive that contains the full content you intend to reference. Avoid partial captures or extremely old versions when newer archives of the complete resource exist.

Do language-specific contribution guides follow the same policy?

Yes. Files named docs/CONTRIBUTING-xx.md (where xx represents the language code) contain translations of the same Internet Archive link policy. Non-English contributors should consult their language-specific guide to ensure compliance with localized formatting while maintaining the same technical requirements for archived notation.

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