freetechbooks.com
🖥 Status: error
🕒 Response Time: 0.641 sec
⬅️ Response Code: 501
The number of uptime checks of freetechbooks.com performed over the past 631 days, starting November 20, 2024, stands at 54. Freetechbooks.com returned a code 200 during its most recent uptime on April 29, 2026, and was accessible 48 times during all tests. Freetechbooks.com was offline for 5 out of every assessment that was done, or 9.26% of the total, with the most recent assessment occurring on July 4, 2026. Among the 1 error-containing responses, the most current error, coded as 501, was detected on August 10, 2026. The response received from freetechbooks.com was 0.641 seconds on August 10, 2026, against an 0.704 seconds average.
54
Last Updated: August 10, 2026
Freetechbooks overview
- Domain
- freetechbooks.com
- Title
- Database of Free Online Computer Science and Programming Books, Textbooks, and Lecture Notes
- Description
- This site lists free online computer science, engineering and programming books, textbooks and lecture notes, all of which are legally and freely available.
- F Site Status Rank
- 20 720
- Search Wikipedia
- freetechbooks.com
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- alternatives to freetechbooks.com
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Freetechbooks.com
status check request map as of August 14, 2026
Country report for freetechbooks.com as of August 14, 2026
| Iran | 100.00% | ||||||||
| 20:17 | |||||||||
| Site | Total Checks | Last Modified |
|---|---|---|
| 21 | December 4, 2021 | |
| 15 | January 19, 2025 | |
| 54 | November 20, 2024 | |
| 11 | January 9, 2025 | |
| 14 | October 27, 2024 |
Sexaffaires.com | Freetechbooks.com | ||||
|---|---|---|---|---|---|
General SEO Report
| Page Title | Page Title tips for freetechbooks.com: Consider how your website title will appear in search results, crafting something compelling yet concise that accurately reflects page content while incorporating your main SEO keywords strategically to maximize both visibility and the probability of earning clicks from searchers. |
|---|---|
| Database of Free Online Computer Science and Programming Books, Textbooks, and Lecture Notes Length: 92 characters | |
| Meta Description | Meta Description tips for freetechbooks.com: Meta descriptions significantly impact your click-through rate from search engines, which can indirectly influence your search rankings; write clear, keyword-rich, and concise (under 160 characters) copy for each page, ensuring the description accurately reflects the content and speaks directly to the target audience's intent to drive traffic to your website effectively. |
| This site lists free online computer science, engineering and programming books, textbooks and lecture notes, all of which are legally and freely available. Length: 156 characters | |
| Meta Keywords | Meta Keywords tips for freetechbooks.com: Relying on meta keywords alone is insufficient for achieving high rankings in competitive niches; comprehensive SEO tactics focusing on EAT (Expertise, Authoritativeness, Trustworthiness) and user experience are paramount. |
| no meta keywords data for freetechbooks.com 2026-08-14T11:03:56+00:00 | |
| Page Content | Page Content tips for freetechbooks.com: Thoroughly research keywords using analytics tools and competitor analysis to identify valuable semantic intent gaps that current page content might not address sufficiently. |
| Web Page Content Length: 64999 characters | |
| H1 Heading | H1 Heading tips for freetechbooks.com: Dedicating a clear, concise H1 tag as the primary headline on your webpage is crucial for communicating its main topic to both users scanning content quickly and search engine crawlers prioritizing page relevance, significantly improving click-through rates from SERPs by instantly signaling value and relevance to specific keyword queries. |
| no h1 heading data for freetechbooks.com 2026-08-14T11:03:56+00:00 | |
| H2 Headings | H2 Headings tips for freetechbooks.com: H2 tags play a crucial role in web content hierarchy on any website, signaling to search engines like Google and users alike the secondary topics and subheadings within the main article body. |
| no h2 headings data for freetechbooks.com 2026-08-14T11:03:56+00:00 | |
| H3 Headings | H3 Headings tips for freetechbooks.com: H3 tags serve as crucial signposts within your page content, guiding users quickly to the specific information they seek within the broader context established by higher-level headings. |
| no h3 headings data for freetechbooks.com 2026-08-14T11:03:56+00:00 | |
| H4 Headings | H4 Headings tips for freetechbooks.com: Search engines favor well-structured content; therefore, incorporating H4 tags helps define the document outline, signaling content organization and potentially boosting your page's search ranking. |
| no h4 headings data for freetechbooks.com 2026-08-14T11:03:56+00:00 | |
| H5-H6 Headings | H5-H6 Headings tips for freetechbooks.com: Search engines prefer clear content architecture; using H5 and H6 tags correctly contributes to this architecture, helping them understand the topical relevance of specific section subsections. |
| no h5-h6 headings data for freetechbooks.com 2026-08-14T11:03:56+00:00 | |
| Image ALT Attributes | Image ALT Attributes tips for freetechbooks.com: Optimize images for SEO by embedding relevant keywords naturally within the ALT text, ensuring it describes the image accurately while avoiding keyword stuffing that could harm ranking. |
| http://freetechbooks.com/uploads/1742554677-msgp.jpg http://freetechbooks.com/uploads/1742553043-se60.png http://freetechbooks.com/uploads/1742273676-coverLADR4e.png http://freetechbooks.com/uploads/new-dark-grey-background_cr.jpg http://freetechbooks.com/uploads/1673390483-math-college-algebra--fa17-uco.jpg http://freetechbooks.com/uploads/1672997658-discmath-root-b.jpg http://freetechbooks.com/uploads/1672566839-Essentials_Scratch_v1.jpg http://freetechbooks.com/uploads/1672561425-1664663647-cover.png http://freetechbooks.com/uploads/1672561475-1664663253-364204073X.01._SCLZZZZZZZ_SX500_.jpg http://freetechbooks.com/uploads/1672561799-1664588541-FOAGaug2922publici_rs.jpg http://freetechbooks.com/uploads/1672562055-1646924278-unplugged-en-2.jpg http://freetechbooks.com/uploads/1672562105-1646918798-cover-small.jpg http://freetechbooks.com/uploads/1672562195-1641105945-practical_cryptography.png and 7 more... Count: 14 images with ALT attributes | |
| Robots.txt | Robots.txt tips for freetechbooks.com: The robots.txt file acts as a gatekeeper for search engine bots, guiding them away from resource-intensive directories like uploads or logs and preventing them from wasting crawl budget on unimportant content. |
| file robots.txt was found on the website | |
| XML Sitemap | XML Sitemap tips for freetechbooks.com: XML sitemaps are instrumental in informing search engines about your website's hierarchy and priority levels, significantly impacting the speed at which new pages gain visibility in search results. |
| no xml sitemap data for freetechbooks.com 2026-08-14T11:03:56+00:00 | |
| Page Size | Page Size tips for freetechbooks.com: Excessive page size is a major performance bottleneck contributing to poor Core Web Vitals metrics; strategically compress assets and minimize unused code across your website to keep file sizes small for faster initial rendering. |
| page size: 63 kb | |
| Response Time | Response Time tips for freetechbooks.com: Achieve lower website response times by implementing robust caching strategies like CDN delivery, optimizing database interactions, and refining server-side code execution efficiency for faster load completion. |
| response time: 0.704 sec | |
| Minify CSS | Minify CSS tips for freetechbooks.com: Utilize automated tools to consistently minify CSS by stripping out whitespace and comments, ensuring that your website delivers highly compressed style sheets for improved performance and user engagement, which is vital for SEO. |
| Minified: /css/bootstrap.min.yeti.css /bower_components/font-awesome/css/font-awesome.min.css Unminified: /css/custom.css /css/bbcode.css /css/seqola.css included in the page | |
| Minify JavaScript | Minify JavaScript tips for freetechbooks.com: Search engine optimization heavily recommends enabling server-side JavaScript minification during deployment, where the process systematically removes all formatting whitespace, explanatory comments, and irrelevant characters from code, significantly reducing bandwidth usage and improving the Time To First Byte (TTFB) metric. |
| Minified: /js/respond.min.js /bower_components/jquery/dist/jquery.min.js /bower_components/bootstrap/dist/js/bootstrap.min.js //freetechbooks-1.disqus.com/count.js Unminified: /js/seqola.js http://tags.expo9.exponential.com/tags/FreeTechBooks/ROS/tags.js detected during site scan | |
| Structured Data | Structured Data tips for freetechbooks.com: Incorporate diverse schema types (FAQ, how-to guides, organization) to provide comprehensive structured data context across your website, signaling authority and improving semantic relevance for various search intents. |
| no structured data data for freetechbooks.com 2026-08-14T11:03:56+00:00 | |
| CDN Usage | CDN Usage tips for freetechbooks.com: Minimize the impact of international expansion on your website's load times by selecting a global CDN provider with points of presence (PoPs) strategically located across continents; this ensures your expanding user base globally experiences the same fast load speeds as your domestic users, crucial for maintaining a consistent user experience worldwide. |
| no cdn usage data for freetechbooks.com 2026-08-14T11:03:56+00:00 | |
| SSL certificates | SSL certificates tips for freetechbooks.com: Obtaining and correctly installing an SSL certificate to encrypt your website's data is no longer optional but essential for online security and SEO; search engines like Google increasingly favor HTTPS sites due to the enhanced security they provide to users, preventing sensitive information theft and building credibility. |
| SSL is enabled on the website |
Estimated Traffic
| Minimum Daily Unique Visitors: | 1 525 |
| Minimum Daily Visits: | 1 782 |
| Minimum Daily Page Views: | 3 068 |
| Minimum Monthly Unique Visitors: | 45 750 |
| Minimum Monthly Visits: | 53 460 |
| Minimum Monthly Page Views: | 92 040 |
| Minimum Yearly Unique Visitors: | 549 000 |
| Minimum Yearly Visits: | 641 520 |
| Minimum Yearly Page Views: | 1 104 480 |
| Maximum Daily Unique Visitors: | 1 929 |
| Maximum Daily Visits: | 2 057 |
| Maximum Daily Page Views: | 3 472 |
| Maximum Monthly Unique Visitors: | 57 870 |
| Maximum Monthly Visits: | 61 710 |
| Maximum Monthly Page Views: | 104 160 |
| Maximum Yearly Unique Visitors: | 694 440 |
| Maximum Yearly Visits: | 740 520 |
| Maximum Yearly Page Views: | 1 249 920 |
Estimated Valuation
| Daily Revenue: | US$ 2 - 5 |
| Monthly Revenue: | US$ 60 - 150 |
| Yearly Revenue: | US$ 720 - 1 800 |
Estimated Worth
| Minimum: | US$ 1 080 |
| Maximum: | US$ 5 400 |
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