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.
- K Site Status Rank
- 80 494
- Search Wikipedia
- freetechbooks.com
- Alternatives
- alternatives to freetechbooks.com
- Recently checked
- chugin.co.jp
debrecenikilometerek.hu
Last Updated: July 3, 2026
Status: up
Response Time: 1.617 sec
Response Code: 200
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 |
Debrecenikilometerek.hu | Freetechbooks.com | ||||
|---|---|---|---|---|---|
General SEO Report
| Page Title | Page Title tips for freetechbooks.com: The website title plays a vital role in SEO by incorporating core target keywords naturally towards the beginning of the text, requires adherence to the under-60-character standard set by search engines to avoid truncation and preserve message integrity, and must unambiguously reflect the page's content or service offering, thereby increasing the likelihood of attracting and retaining user attention. |
|---|---|
| Database of Free Online Computer Science and Programming Books, Textbooks, and Lecture Notes Length: 92 characters | |
| Meta Description | Meta Description tips for freetechbooks.com: Don't forget to review your meta descriptions regularly and edit them if necessary. As your content strategy or keyword focus evolves, outdated descriptions might no longer accurately represent your page or entice the right audience 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: Keyword research should guide topic selection and content development, ensuring keywords naturally flow within the content itself for the best user and search engine outcomes, not tag placement. |
| no meta keywords data for freetechbooks.com 2026-08-14T14:50:08+00:00 | |
| Page Content | Page Content tips for freetechbooks.com: Create clear calls to action within your page content to guide users towards the next steps, whether it's contacting your business, signing up for a newsletter, or making a purchase. |
| Web Page Content Length: 64999 characters | |
| H1 Heading | H1 Heading tips for freetechbooks.com: The main headline defined by the H1 tag plays a critical role in user engagement, often serving as the crucial first impression that determines whether a visitor will read further or immediately leave the webpage. |
| no h1 heading data for freetechbooks.com 2026-08-14T14:50:08+00:00 | |
| H2 Headings | H2 Headings tips for freetechbooks.com: Detailed H2 header text should precisely describe the upcoming section's content to maximize user relevance and accurately signal topic shifts to crawlers. |
| no h2 headings data for freetechbooks.com 2026-08-14T14:50:08+00:00 | |
| H3 Headings | H3 Headings tips for freetechbooks.com: Consistently format your H3 headers using HTML for better readability and SEO performance; avoid using the same heading level for different content hierarchies to maintain proper semantic structure. |
| no h3 headings data for freetechbooks.com 2026-08-14T14:50:08+00:00 | |
| H4 Headings | H4 Headings tips for freetechbooks.com: Formatting H4 text with appropriate styling (bold, slightly decreased font size) differentiates these secondary sub-points from the main H3 section headers and maintains a visual content hierarchy. |
| no h4 headings data for freetechbooks.com 2026-08-14T14:50:08+00:00 | |
| H5-H6 Headings | H5-H6 Headings tips for freetechbooks.com: Search engines analyze heading hierarchy, including H5 and H6 levels, to better understand page content structure and relevance; maintaining a logical flow is essential. |
| no h5-h6 headings data for freetechbooks.com 2026-08-14T14:50:08+00:00 | |
| Image ALT Attributes | Image ALT Attributes tips for freetechbooks.com: Boost your website's search visibility and ensure it is usable by everyone by developing a robust system for writing detailed ALT text for all images, combining keyword research with clear descriptions to create text that accurately represents the visual content for crawlers and screen readers. |
| 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 protocol dictates that while you can suggest robots not to crawl certain parts of your site, you cannot guarantee compliance, so relying solely on it for sensitive data protection is discouraged. |
| file robots.txt was found on the website | |
| XML Sitemap | XML Sitemap tips for freetechbooks.com: To maximize the effectiveness of your XML sitemap, ensure it follows the specific schema guidelines set by search engines like Google, providing accurate information about each URL's priority, last modification date, and change frequency. |
| no xml sitemap data for freetechbooks.com 2026-08-14T14:50:08+00:00 | |
| Page Size | Page Size tips for freetechbooks.com: In competitive industries where user attention spans are short, having lightweight, fast-loading pages due to careful size optimization provides a significant edge, leading to longer visit durations, reduced bounce rates, and higher potential return on investment for your online efforts. |
| page size: 63 kb | |
| Response Time | Response Time tips for freetechbooks.com: While frontend optimizations are crucial, backend processing speed (server response time) remains a fundamental pillar for achieving truly fast website performance and high search rankings. |
| response time: 0.704 sec | |
| Minify CSS | Minify CSS tips for freetechbooks.com: Adopt CSS minification practices by removing all extraneous whitespace, including indentation, line breaks, and carriage returns, along with any comment blocks from your style sheets to reduce file size, decrease bandwidth consumption, and contribute to higher Core Web Vitals and search rankings. |
| 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: Don't overlook JavaScript minification as just a minor technical detail; neglecting it severely impacts page speed and SEO rankings, hindering your website's potential reach and visibility. |
| 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: Integrating structured schema data for your business, like local business or review aggregation schemas, can directly influence local search rankings by clearly signaling your operating hours, address, and customer feedback presence to search algorithms |
| no structured data data for freetechbooks.com 2026-08-14T14:50:08+00:00 | |
| CDN Usage | CDN Usage tips for freetechbooks.com: Regularly review your CDN usage analytics and adjust configurations or provider choices based on performance metrics, cost efficiency, and user experience data. |
| no cdn usage data for freetechbooks.com 2026-08-14T14:50:08+00:00 | |
| SSL certificates | SSL certificates tips for freetechbooks.com: SSL technology, including features like HTTP Strict Transport Security (HSTS) and OCSP Stapling, optimizes secure connections by reducing SSL handshake overhead and improving page load speeds for returning visitors, contributing positively to user experience and SEO. |
| SSL is enabled on the website |
Estimated Traffic
| Minimum Daily Unique Visitors: | 5 924 |
| Minimum Daily Visits: | 6 923 |
| Minimum Daily Page Views: | 11 919 |
| Minimum Monthly Unique Visitors: | 177 720 |
| Minimum Monthly Visits: | 207 690 |
| Minimum Monthly Page Views: | 357 570 |
| Minimum Yearly Unique Visitors: | 2 132 640 |
| Minimum Yearly Visits: | 2 492 280 |
| Minimum Yearly Page Views: | 4 290 840 |
| Maximum Daily Unique Visitors: | 7 494 |
| Maximum Daily Visits: | 7 993 |
| Maximum Daily Page Views: | 13 489 |
| Maximum Monthly Unique Visitors: | 224 820 |
| Maximum Monthly Visits: | 239 790 |
| Maximum Monthly Page Views: | 404 670 |
| Maximum Yearly Unique Visitors: | 2 697 840 |
| Maximum Yearly Visits: | 2 877 480 |
| Maximum Yearly Page Views: | 4 856 040 |
Estimated Valuation
| Daily Revenue: | US$ 9 - 19 |
| Monthly Revenue: | US$ 270 - 570 |
| Yearly Revenue: | US$ 3 240 - 6 840 |
Estimated Worth
| Minimum: | US$ 4 860 |
| Maximum: | US$ 20 520 |
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