Cataloging speculative fiction worldwide
The Internet Speculative Fiction Database (ISFDB) (isfdb.org) scores 71 out of 100 on Brand Analyzer, placing it in the Brand-Ready tier among Media & Entertainment brands, Education brands, Other brands, in the 28th percentile of 32459 Media & Entertainment brands.
The Internet Speculative Fiction Database (ISFDB) is an online bibliographic database focused on speculative fiction, including science fiction, fantasy, and horror. Founded in 1995, it catalogs titles, authors, and publications, functioning as a community-maintained reference for the genre. ISFDB is freely accessible and aims to provide comprehensive and accurate bibliographic data, serving readers, researchers, bibliographers, collectors, and publishing professionals seeking detailed information about speculative fiction works and their creators.
| Brand Name | The Internet Speculative Fiction Database (ISFDB) |
|---|---|
| Domain | isfdb.org |
| Industry | Media & Entertainment, Education |
| Founded | 1995 |
| Main Competitors | Goodreads (92/100), WorldCat (90/100), Locus Index to Science Fiction (87/100), Open Library (82/100), LibraryThing (80/100), SF Encyclopedia (66/100) |
Moz Domain Authority 60/100 vs category average 51 / leader 100 - a strong backlink profile, so AI systems frequently encounter mentions of the brand.
Ranked #64,677 on the Tranco list of most-visited sites - strong traffic reinforces the brand's prominence to AI models.
The Internet Speculative Fiction Database (ISFDB) appears on Wikipedia but without a dedicated company entity, so AI models can confuse it with similarly named subjects.
The homepage meta description reads "To provide a comprehensive, accurate, and freely accessible bibliographic database of speculative fiction literature." (No meta description) - this is the summary AI engines are most likely to quote.
Structured data on the homepage: No structured data or Open Graph tags detected. Adding Organization and FAQ schema would further help AI crawlers parse the brand's identity.
AI-crawler access: No robots.txt found (default: all bots allowed, but explicit file preferred) - robots.txt controls whether engines like GPTBot and ClaudeBot can read the site at all.
Detected tech stack: Cloudflare.
Social footprint: verified profiles on X (Twitter), Facebook, Instagram, GitHub; no detected presence on LinkedIn, YouTube - consistent profiles reinforce the brand's identity across the web.
0 Reddit mentions - community discussion signals real-world reputation to AI models.
Live results from asking a general-purpose AI assistant about the brand, checked October 2026.
When asked "What is The Internet Speculative Fiction Database (ISFDB)?", Claude could identify the brand as of October 2026. ISFDB is a collaborative, volunteer-run online database that catalogs science fiction, fantasy, and horror publications, including books, magazines, anthologies, and short stories, with detailed bibliographic data on authors, titles, editions, and cover art. Best known for Being the most comprehensive bibliographic database for speculative fiction, widely used by researchers, collectors, and fans to track editions and publication .
When asked "Best brands similar to The Internet Speculative Fiction Database (ISFDB)?", Claude would recommend The Internet Speculative Fiction Database (ISFDB) as of October 2026. If someone asked for the best resources for speculative fiction bibliographic research, ISFDB would be a top recommendation due to its depth and accuracy.
Common questions people ask in Google, ChatGPT, Claude, Gemini, Perplexity, and other AI search engines.
The Internet Speculative Fiction Database (ISFDB)'s main competitors in Media & Entertainment: Goodreads (92/100), WorldCat (90/100), Locus Index to Science Fiction (87/100), Open Library (82/100), LibraryThing (80/100).
Sources: Brand Analyzer scan
ISFDB (The Internet Speculative Fiction Database) is a free, community-maintained online bibliographic database dedicated to speculative fiction, covering science fiction, fantasy, and horror literature. Founded in 1995, it catalogs titles, authors, publications, and related bibliographic details, serving as a reference resource for the genre.
Sources: The Internet Speculative Fiction Database (ISFDB) official site
The Internet Speculative Fiction Database (ISFDB) has limited AI-search visibility, scoring 43/100 on Brand Analyzer's AI visibility composite (visibility 45, trust 37, recommendation 48). This estimates how likely AI engines like ChatGPT, Claude, Gemini and Perplexity are to know, trust, and recommend the brand.
Sources: The Internet Speculative Fiction Database (ISFDB) official site
The Internet Speculative Fiction Database (ISFDB) was founded in 1995. The Internet Speculative Fiction Database (ISFDB) operates in the Media & Entertainment category. It is analyzed by Brand Analyzer across seven brand dimensions and AI-search visibility.
Sources: Wikidata
ISFDB offers a searchable online bibliographic database covering speculative fiction titles, authors, series, publishers, and editions. It provides detailed publication records, including cover art information, awards data, and bibliographic metadata for science fiction, fantasy, and horror works.
Sources: The Internet Speculative Fiction Database (ISFDB) official site
The Internet Speculative Fiction Database (ISFDB) scores 48/100 on Brand Analyzer's AI recommendation signal, indicating it is less likely to be surfaced when AI assistants like ChatGPT suggest Media & Entertainment options. Recommendation depends on crawlability, structured data, and category authority; a Wikipedia presence helps.
Sources: The Internet Speculative Fiction Database (ISFDB) official site
ISFDB is known for being a comprehensive, freely accessible bibliographic database specifically focused on speculative fiction genres-science fiction, fantasy, and horror. It is recognized among genre enthusiasts and researchers as a detailed reference source for tracking publication histories, author bibliographies, and book editions.
Sources: The Internet Speculative Fiction Database (ISFDB) official site
The Internet Speculative Fiction Database (ISFDB) can improve AI discoverability by strengthening structured data (Organization and FAQ schema), maintaining an accurate Wikipedia/Wikidata entity, earning authoritative citations, and keeping content crawlable for AI bots. Brand Analyzer measures these as visibility, trust, and recommendation signals.
Sources: The Internet Speculative Fiction Database (ISFDB) official site
ISFDB is used by science fiction and fantasy readers, academic researchers, bibliographers, book collectors, and publishing professionals who need detailed bibliographic information about speculative fiction works and their creators.
Sources: The Internet Speculative Fiction Database (ISFDB) official site
The Internet Speculative Fiction Database (ISFDB) scores 43/100 for AI visibility - how well ChatGPT, Claude, Perplexity and Google AI Overviews can discover, identify and cite the brand.
The Internet Speculative Fiction Database (ISFDB) has a limited AI-visibility profile at 43/100 - a proxy for how readily ChatGPT, Perplexity and Google's AI Overviews can recognise and cite it. Its strongest area is recommendation likelihood (48/100) and its weakest is trust (37/100). It benefits from a Wikidata knowledge-graph entry, a global traffic rank of #64,677 (Tranco) and a Moz Domain Authority of 60/100. The main gaps holding it back: no clear Wikipedia entity to anchor it in LLM training data, thin schema.org structured data and no llms.txt to steer AI to its best pages. In a live check, Claude could already identify The Internet Speculative Fiction Database (ISFDB) from memory (October 2026) - a sign these signals are paying off.
The score combines seven dimensions - name quality, digital presence, visual identity, messaging clarity, trust foundation, AI discoverability, and brand authority - into a single objective benchmark.
Ranked closest to The Internet Speculative Fiction Database (ISFDB): Irving Berlin (71/100), The Irish Heather (71/100), Italy Heritage (71/100), IT-BUSINESS (71/100).
A step up - brands to learn from: Zoom (81/100), Znews (81/100).
Category leader: Change.org (97/100).
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