18 Best Free AI Summarizer for PDF, Article, Text, Video & Book in 2024

Last Updated: December 28, 2023

In a world brimming with information overload, distilling lengthy PDFs, intricate articles, dense texts, comprehensive videos, and voluminous books into concise summaries is not just a luxury, but a necessity. From our comprehensive analysis of over 18 AI Summarizers, we’re poised to unveil the crème de la crème of free AI Summarizers tailored for PDFs, articles, texts, videos, and books.

We’re not suggesting a fleeting glance at the first free AI Summarizer that pops up in your search results. You need a tool that’s not only efficient and accurate but also secure and user-friendly. A summarizer that not only condenses content but also retains the essence and context of the original material.

Important! Summary of Best AI Summarizers

Recommended:
1. PDF: PDFgear Chatbot – Specialized in PDF summarization, user-friendly, and free.
2. Article/Text: ChatGPT – Versatile, handles various text formats effectively, though limited word count.
3. Video: Notta – Unique in transcribing and summarizing audio content, ideal for video content.
4. Book: Resoomer – Excelling in academic texts, suitable for summarizing complex book content.
Not Recommended:
1. Frase – Limited to articles up to 700 words, less suitable for extensive research or books.
2. Inksprout – Primarily focused on social media content, not ideal for academic or detailed text summarization.

What is an AI Summarizer?

An AI Summarizer is a tool that uses artificial intelligence algorithms to analyze and condense lengthy texts, documents, or discussions into shorter, more manageable summaries. These tools are designed to extract key information and present it in a clear and concise manner, saving time and effort for the user.

How Does AI Summarizer Work?

AI Summarizers work by scanning the entire text to identify the most relevant and important sentences. They use natural language processing (NLP) and machine learning algorithms to understand the context and meaning of the text. The AI then generates a summary that captures the essence of the original content, often in unique words, ensuring that the main points are clearly communicated.

Who Can Use AI Summarizer?

Students and academics for research and study purposes.
Business professionals for summarizing reports, emails, and documents.
Content creators and marketers for condensing information.
Researchers and scientists for quick analysis of lengthy papers.
Anyone who needs to quickly understand the gist of large volumes of text.

Why Use AI Summarizer?

The primary reasons for using AI Summarizers include:

Time-saving: Quickly get the main points of lengthy documents.
Efficiency: Enhance productivity by reducing the time spent on reading.
Accessibility: Make complex or dense information more understandable.
Consistency: Ensure that key information is not missed in summaries.

Use Cases for AI Summarizers

Summarizing academic research papers for faster review.
Condensing business reports for quick decision-making.
Creating summaries of books or articles for study guides.
Analyzing news articles or blog posts for content curation.
Preparing executive summaries of lengthy documents.

18 Best AI Summarizers

1. EdrawMax AI

Expanded Description: EdrawMax AI stands out as a multifaceted tool, primarily a diagramming assistant that ingeniously integrates AI summarization. It’s tailored for those who need to transform complex content into visual diagrams while also requiring concise summaries of the same.
Enhanced Features: Includes advanced AI OCR for text extraction from images, Gantt Chart for project management, and AI Drawing for creative visualizations.
In-depth Analysis: Its versatility makes it ideal for professionals across various fields, from engineering to marketing. However, its focus on diagramming might overshadow its summarization capabilities for pure text content.
Detailed Pricing: The pricing structure is likely to vary based on the selected package, catering to different professional needs.

2. ChatGPT

Expanded Description: ChatGPT revolutionizes content generation and summarization with its advanced AI capabilities. It’s a go-to for users needing to process and summarize lengthy documents and create diverse content forms.
Enhanced Features: Boasts of handling complex documents and excels in creating content that ranges from academic to creative writing.
In-depth Analysis: Its versatility and user-friendly interface make it a popular choice. However, its free version’s word count limitation and focus on broader content generation might limit its effectiveness as a dedicated summarizer.
Detailed Pricing: Offers a free version for basic use, with ChatGPT Plus available at $20/month for more advanced features.

3. Semrush Summary Tool

Expanded Description: Semrush, known for its SEO prowess, offers a summary tool that’s a boon for SEO-focused content creators. It provides summaries tailored to enhance SEO effectiveness.
Enhanced Features: Allows users to choose summary lengths and focuses on creating SEO-optimized content.
In-depth Analysis: Ideal for digital marketers and content creators focusing on SEO. However, its pricing and focus on SEO might not suit users looking for general summarization needs.
Detailed Pricing: Integrated within Semrush’s SEO tools package, with variable pricing based on the selected SEO services.

4. Jasper

Expanded Description: Jasper serves as a powerful AI tool for both text summarization and content creation, catering especially to business needs.
Enhanced Features: Offers over 50 summary templates and a unique sentence expander feature, making it a versatile tool for content creation.
In-depth Analysis: Its high-quality summaries and business-oriented features make it a top choice for professionals, though its pricing might be a barrier for individual users or small businesses.
Detailed Pricing: Pricing starts at $49/month for the “Creator Mode,” targeting business users.

5. Inksprout

Expanded Description: Inksprout is an innovative AI tool designed for social media enthusiasts, offering caption generation and summarization of social media content.
Enhanced Features: Specializes in generating AI captions for various categories and can create videos from blog posts, enhancing social media engagement.
In-depth Analysis: Its ease of use and focus on social media content make it a unique tool in the market. However, its higher pricing compared to other tools might be a consideration for budget-conscious users.
Detailed Pricing: The “Pro” plan starts at $19/month, offering advanced features for social media content creation.

6. TLDR

Expanded Description: TLDR is an AI tool specifically designed for summarizing long academic papers and documents, making it a valuable asset for students and researchers.
Enhanced Features: Offers metadata extraction and browser extensions, supporting multiple languages for a global user base.
In-depth Analysis: While it excels in academic use and supports many languages, its suitability for extensive research publications is limited.
Detailed Pricing: Available for free with browser extensions, making it accessible for academic users.

7. QuillBot

Expanded Description: QuillBot stands as a versatile AI program for summarizing and paraphrasing text, useful for both academic and general content needs.
Enhanced Features: Features adjustable summary length and a plagiarism checker, ensuring originality in content.
In-depth Analysis: Its free version and integration with popular word processors like Word and Google Docs make it a user-friendly option. However, the basic nature of summaries in the free version might not suffice for more complex summarization needs.
Detailed Pricing: Offers a free version with basic features; premium plans start at $4.17/month (billed annually) for advanced capabilities.

8. Scholarcy

Expanded Description: Scholarcy is an online tool adept at summarizing academic articles, making it a valuable resource for students and researchers.
Enhanced Features: Features the Robo-Highlighter™ for emphasizing key phrases and allows customization of summaries.
In-depth Analysis: Its focus on academic research is a strong point, but it might not cater as effectively to non-academic content summarization.
Detailed Pricing: Offers a free browser extension and flashcards; full features available at $7.99/month.

9. Frase

Expanded Description: Frase is an AI summary generator with a specific focus on optimizing content for Google’s algorithm, making it suitable for SEO-focused summarization.
Enhanced Features: Capable of summarizing articles up to 700 words and integrates seamlessly with Google Docs.
In-depth Analysis: Its SEO focus and ease of use are commendable, but its limitation to shorter articles might restrict its use for more extensive content.
Detailed Pricing: Offers a free tool on its site, with premium plans varying for more advanced features.

10. Notta

Expanded Description: Notta distinguishes itself as a speech-to-text software that also excels in creating summaries, particularly of audio content.
Enhanced Features: Specializes in transcribing audio content and offers single-click summarization of its transcripts.
In-depth Analysis: Its high transcription accuracy makes it ideal for summarizing audio and video content. However, its limitation to only summarizing its own transcripts might be a drawback for some users.
Detailed Pricing: The “Pro” plan is priced at $13.99/month, with a more comprehensive “Business” plan at $59/month.

11. UPDF AI

Expanded Description: UPDF AI is a unique tool that combines AI summarization capabilities within a PDF editor, offering direct summarization of document content.
Enhanced Features: Directly summarizes text and paragraphs from documents, supporting multiple languages.
In-depth Analysis: Its ability to summarize directly from documents is a significant advantage, though the lack of a web version and a limited free plan might be constraints for some users.
Detailed Pricing: Available at $9/month or $59/year, with a free trial option.

12. Summarizer.org

Expanded Description: Summarizer.org is a straightforward, web-based text summarizer tool, ideal for users seeking basic summarization without additional frills.
Enhanced Features: Capable of summarizing entire documents or specific paragraphs, supporting multiple languages.
In-depth Analysis: Its simplicity and free availability are key advantages, but the basic nature of summaries might not meet the needs of users seeking more sophisticated summarization.
Detailed Pricing: Completely free

, making it accessible to a wide range of users.

13. Paraphraser.io

Expanded Description: Paraphraser.io is a web-based tool offering dual modes of summarization, catering to both basic and AI-powered summarization needs.
Enhanced Features: Includes both a standard summarizer and an AI summarizer mode, supporting multiple languages.
In-depth Analysis: Suitable for users needing basic summarization with additional features like rewriting. However, the limited word count in the free plan and the cost of premium plans might be considerations for some.
Detailed Pricing: Priced at $5/month (billed annually), offering both summarization and paraphrasing capabilities.

14. PDFgear Chatbot

Expanded Description: PDFgear Chatbot is a specialized AI chatbot and PDF summarizer, focusing exclusively on summarizing PDF content.
Enhanced Features: Efficiently summarizes text and information contained within PDFs.
In-depth Analysis: Its specialization in PDF content makes it a valuable tool for users dealing primarily with PDFs. However, its limitation to only PDFs might not suit users with diverse content types.
Detailed Pricing: Free to use, making it an accessible option for PDF summarization.

15. ChatPDF

Expanded Description: ChatPDF is a web-based tool designed specifically for summarizing content within PDF files, offering a straightforward drag-and-drop interface.
Enhanced Features: Simplifies the process of summarizing PDF content, making it user-friendly and efficient.
In-depth Analysis: Ideal for users who primarily deal with PDFs. However, its restriction to PDFs limits its applicability for other content types.
Detailed Pricing: Offers a basic free version; ChatPDF Plus available at $15.99/month for more advanced features.

16. Resoomer

Expanded Description: Resoomer is an AI summarizer with a strong focus on academic texts, making it a go-to tool for students and researchers.
Enhanced Features: Summarizes documents effectively and includes browser extensions for ease of use.
In-depth Analysis: Its academic focus is a major strength, but its strongest tools being behind a paywall might limit its accessibility for some users.
Detailed Pricing: Offers a one-time payment option of €9.90 for 200 Quotas, providing flexibility in usage.

17. Writer

Expanded Description: Writer is an AI summarizer that excels in creating bullet point summaries, suitable for users needing quick, basic summarization.
Enhanced Features: Efficiently creates bullet point lists from content, simplifying the summarization process.
In-depth Analysis: Its simplicity and focus on bullet summaries make it a good choice for basic needs, though it may not be as advanced as other summarizers.
Detailed Pricing: Free to use, with premium plans available for more advanced features.

18. Scribbr

Expanded Description: Scribbr is a free AI summarizer offering secure document summarization, ideal for users concerned with data privacy.
Enhanced Features: Provides detailed summarization sentence-by-sentence or paragraph-by-paragraph, ensuring content security.
In-depth Analysis: Its focus on security and document summarization is commendable, but the limitation to 600 words and inability to access PDFs might be drawbacks for some users.
Detailed Pricing: Completely free, making it an accessible option for secure document summarization.

FAQs about AI Summarizers

Are AI Summarizers accurate? AI Summarizers are generally accurate but may vary depending on the complexity of the text and the quality of the AI algorithm.
Can AI Summarizers replace human summarization? While AI Summarizers are efficient, they may not always capture nuances and context as well as a human might, especially for very complex or technical texts.
Do AI Summarizers work in multiple languages? Many AI Summarizers support multiple languages, but this can vary between different tools.
Is the use of AI Summarizers secure for confidential documents? Security depends on the provider. It’s important to check the privacy policy and security measures of the AI Summarizer tool.

Final Thoughts

After rigorous testing and meticulous evaluation, we recommend a select few that stand out in their respective categories. These tools are not just about summarizing; they are about transforming how you interact with information, ensuring that you stay informed and ahead, without getting overwhelmed by the sheer volume of content.