isfdb.org
🖥 Status: error
🕒 Response Time: 0.032 sec
⬅️ Response Code: 403
Analyzing the data points shows isfdb.org passed 20 functioning checks within the 1 780 day interval beginning September 29, 2021. Isfdb.org was functional 13 times from the aggregate tests performed, last operable January 1, 2026, and replying with 200 status code. Isfdb.org experienced downtime 1 times, with the most recent instance on November 21, 2021, representing 5.00% of all inspections conducted. The July 23, 2026, response with code 403 was the most recent of the 6 error instances recorded. Records show the July 23, 2026, isfdb.org response at 0.032 seconds, contrasted with the 1.254 seconds average.
20
Last Updated: July 23, 2026
Isfdb overview
- Domain
- isfdb.org
- Title
- The Internet Speculative Fiction Database
- I Site Status Rank
- 86 615
- Search Wikipedia
- isfdb.org
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Isfdb.org
status check request map as of August 14, 2026
Country report for isfdb.org as of August 14, 2026
| United States | 100.00% | ||||||||
| 06:37 | |||||||||
| Site | Total Checks | Last Modified |
|---|---|---|
| 13 | December 1, 2020 | |
| 9 | June 13, 2021 | |
| 20 | September 29, 2021 | |
| 11 | January 4, 2025 | |
| 24 | March 24, 2021 |
Dohillright.com | Isfdb.org | ||||
|---|---|---|---|---|---|
General SEO Report
| Page Title | Page Title tips for isfdb.org: A well-crafted website title must strategically place core keywords near the beginning to capture search engine relevance and user interest, remain concise under 60 characters for optimal display in search results, accurately represent the page's core content to boost click-through rates (CTR) and align with user search intent, thereby improving overall search visibility and conversion potential. |
|---|---|
| The Internet Speculative Fiction Database Length: 41 characters | |
| Meta Description | Meta Description tips for isfdb.org: Don't overlook the power of a strong meta description; use it to clearly communicate what visitors will gain or learn on your page, incorporate your target keyword strategically, and stay under the character limit. |
| no meta description data for isfdb.org 2026-08-14T11:36:45+00:00 | |
| Meta Keywords | Meta Keywords tips for isfdb.org: For website owners aiming for genuine online visibility, the meta keywords tag should be viewed as a largely obsolete relic of the past, offering no measurable advantage in contemporary search engine ranking systems. |
| no meta keywords data for isfdb.org 2026-08-14T11:36:45+00:00 | |
| Page Content | Page Content tips for isfdb.org: Analyze page performance metrics regularly (bounce rate, time on page, conversions) to refine and enhance existing content, ensuring it delivers on its promise and meets both SEO and user goals effectively. |
| Web Page Content Length: 41220 characters | |
| H1 Heading | H1 Heading tips for isfdb.org: For landing pages specifically, the H1 should directly mirror the user intent captured in the search query, ensuring immediate relevance and alignment between advertised content and delivered experience for optimal conversion. |
| no h1 heading data for isfdb.org 2026-08-14T11:36:45+00:00 | |
| H2 Headings | H2 Headings tips for isfdb.org: H2 tags significantly contribute to a website's user experience score (UX) by clearly segmenting content, reducing friction as users navigate complex or lengthy web pages. |
| The Internet Speculative Fiction Database Count: 1 heading tag | |
| H3 Headings | H3 Headings tips for isfdb.org: Don't overlook the power of H3 headers for internal linking opportunities; anchor your primary content links within these descriptive subheadings to guide both users and search engine bots through your website's content structure. |
| You are not logged in. If you create a free account and sign in, you will be able to customize what is displayed. Count: 1 heading tag | |
| H4 Headings | H4 Headings tips for isfdb.org: Search engines rely on proper heading structure, including the appropriate use of H4 tags for relevant sub-topics, as a key ranking factor for content understanding. |
| no h4 headings data for isfdb.org 2026-08-14T11:36:45+00:00 | |
| H5-H6 Headings | H5-H6 Headings tips for isfdb.org: Using H5 and H6 effectively helps distribute keyword focus within specific sub-topics or detailed explanations, contributing to semantic relevance for niche search queries while maintaining a clear keyword hierarchy derived from the main H2-H4 sections. |
| no h5-h6 headings data for isfdb.org 2026-08-14T11:36:45+00:00 | |
| Image ALT Attributes | Image ALT Attributes tips for isfdb.org: Fully descriptive ALT text serves as a critical bridge, enabling search engine crawlers to comprehend the visual information and context of an image on a webpage, thereby improving the overall semantic understanding and ranking potential of that page for related searches involving that visual content. |
| https://www.isfdb.org/IsfdbBanner9.jpg https://www.isfdb.org/isfdb_logo.jpg https://i.creativecommons.org/l/by/4.0/88x31.png https://m.media-amazon.com/images/I/41nwYcxF+OL.jpg https://m.media-amazon.com/images/I/41QplBlSGXL.jpg https://m.media-amazon.com/images/I/51vS0VQw7GL.jpg https://m.media-amazon.com/images/I/411cjS4uYtL.jpg https://m.media-amazon.com/images/I/51NQNMXumML.jpg https://m.media-amazon.com/images/I/416Rb3Hm0jL.jpg https://m.media-amazon.com/images/I/415xySpSg1L.jpg https://m.media-amazon.com/images/I/41wZHDplwvL.jpg https://m.media-amazon.com/images/I/51E0RsETjmL.jpg https://m.media-amazon.com/images/I/41c02hw6BbL.jpg https://m.media-amazon.com/images/I/51ENlg7eHWL.jpg https://m.media-amazon.com/images/I/511vTg91biL.jpg https://m.media-amazon.com/images/I/41AASa0pfwL.jpg https://m.media-amazon.com/images/I/51BD0DIOT7L.jpg https://m.media-amazon.com/images/I/4116ANLiNzL.jpg https://m.media-amazon.com/images/I/41oa5dNquwL.jpg https://m.media-amazon.com/images/I/51U5zFzH2QL.jpg https://m.media-amazon.com/images/I/91+4aBfrJML.jpg https://m.media-amazon.com/images/I/5175p1fZO5L.jpg https://m.media-amazon.com/images/I/41c4aU0QayL.jpg Count: 23 images with ALT attributes | |
| Robots.txt | Robots.txt tips for isfdb.org: Ensure your robots.txt file itself is publicly accessible on your website root and remains correctly formatted without errors or syntax mistakes, as search engines can only respect directives for files they can crawl. |
| file robots.txt was found on the website | |
| XML Sitemap | XML Sitemap tips for isfdb.org: Differentiating between XML sitemaps and other types like robots.txt, it's important to understand that while robots.txt can block crawlers, an XML sitemap actively promotes the indexing of important URLs, enhancing website visibility and search performance metrics. |
| no xml sitemap data for isfdb.org 2026-08-14T11:36:45+00:00 | |
| Page Size | Page Size tips for isfdb.org: Implement resource hints like Preload and PrioritizeVisibleContent to guide the browser on loading critical assets first, helping to achieve a smaller effective page size for core interactions. |
| page size: 40 kb | |
| Response Time | Response Time tips for isfdb.org: While frontend optimization is vital, backend processing speed significantly impacts overall response time; neglecting server-side performance optimization can lead to frustratingly slow page loads despite perfect frontend code. |
| response time: 1.254 sec | |
| Minify CSS | Minify CSS tips for isfdb.org: Search engines favor quicker websites, so integrating CSS minification tools into your workflow is vital; this reduces the critical CSS file size, improving Core Web Vitals like LCP and FID, and ultimately enhancing your search ranking. |
| Unminified: https://www.isfdb.org/biblio.css included in the page | |
| Minify JavaScript | Minify JavaScript tips for isfdb.org: Automated tools for JS minification can aggressively reduce file weight by eliminating all non-functional characters, including whitespace, new lines, and extensive comments, thereby boosting overall site performance and user experience metrics. |
| Unminified: https://www.isfdb.org/isfdb_main.js detected during site scan | |
| Structured Data | Structured Data tips for isfdb.org: Incorporate FAQ schema to directly address high-volume user questions related to your core offerings, thereby capturing featured Snippets and driving targeted traffic directly from search results. |
| no structured data data for isfdb.org 2026-08-14T11:36:45+00:00 | |
| CDN Usage | CDN Usage tips for isfdb.org: Achieve global scalability and consistent performance for your website, even during peak traffic, by offloading a significant portion of your traffic and processing to the distributed network infrastructure provided by a CDN. |
| no cdn usage data for isfdb.org 2026-08-14T11:36:45+00:00 | |
| SSL certificates | SSL certificates tips for isfdb.org: An SSL certificate verifies your website's authenticity and ownership, helping to distinguish your legitimate site from fraudulent or phishing attempts, thereby protecting your brand reputation and user trust. |
| SSL is enabled on the website |
Estimated Traffic
| Minimum Daily Unique Visitors: | 10 488 |
| Minimum Daily Visits: | 12 257 |
| Minimum Daily Page Views: | 21 102 |
| Minimum Monthly Unique Visitors: | 314 640 |
| Minimum Monthly Visits: | 367 710 |
| Minimum Monthly Page Views: | 633 060 |
| Minimum Yearly Unique Visitors: | 3 775 680 |
| Minimum Yearly Visits: | 4 412 520 |
| Minimum Yearly Page Views: | 7 596 720 |
| Maximum Daily Unique Visitors: | 13 268 |
| Maximum Daily Visits: | 14 152 |
| Maximum Daily Page Views: | 23 882 |
| Maximum Monthly Unique Visitors: | 398 040 |
| Maximum Monthly Visits: | 424 560 |
| Maximum Monthly Page Views: | 716 460 |
| Maximum Yearly Unique Visitors: | 4 776 480 |
| Maximum Yearly Visits: | 5 094 720 |
| Maximum Yearly Page Views: | 8 597 520 |
Estimated Valuation
| Daily Revenue: | US$ 15 - 34 |
| Monthly Revenue: | US$ 450 - 1 020 |
| Yearly Revenue: | US$ 5 400 - 12 240 |
Estimated Worth
| Minimum: | US$ 8 100 |
| Maximum: | US$ 36 720 |
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