YouTubeSummary

What YouTubeSummary does

YouTubeSummary is a free, no-account-required web application that uses third-party large language models (currently OpenAI GPT-5.4-nano) to summarize YouTube videos from their subtitles. The service accepts a standard YouTube URL, Shorts link, live replay, or video ID, fetches available captions via yt-dlp, classifies the video into one of roughly a dozen formats (Educational, Interviews, Product Reviews, News, Finance, Business, Technology, Gaming, Cooking, Sport, etc.), and applies category-specific prompts to produce a structured page of key points, timestamps, and notable quotes in under 30 seconds. The product surface also includes a standalone Free Transcript Extractor, a Community History page that exposes public summary URLs, and a Reprocess button for rerunning the pipeline on the same video.

The technical stack is a SvelteKit frontend (currently being rebuilt as of June 2026) with a FastAPI backend. Summaries are cached for near-instant repeat access, and every summary produces a unique, bookmarkable, SEO-indexable public URL that can be shared without an account. The product depends on captions being available on the source video.

YouTubeSummary is operated by Valerian Engineering, an EURL (single-member limited liability company) registered in Lyon, France, founded and built by brothers Valérian de Thézan de Gaussan and Grégoire de Thézan de Gaussan. The company is bootstrapped with no external funding. Monetization today consists of light on-site advertising after an earlier Amazon affiliate experiment was discontinued in late 2025 due to insufficient revenue. A Pro tier supporting deeper chat-with-video, summary translation, heavier models, and advanced long-form workflows is planned and is the stated motivation for the SvelteKit rewrite; the core summarizer and transcript extractor are committed to remain free.

Name

YouTubeSummary

Legal name

Valerian Engineering

Website

https://youtubesummary.com

Company type

Private

Founded year

2024

Operating status

Operating

Headcount range

1–10 employees

Short description

YouTubeSummary is a free, web-based AI tool that summarizes YouTube videos via GPT models and yt-dlp transcript extraction. Operated by Valerian Engineering in France, it serves general consumers, students, and researchers with a no-account-required web app.

Ownership category

akta.pro rank

Product category

AI Video Summarization Software

NAICS

Software Publishers (5132), Broadcasting and Content Providers (516), Web Search Portals, Libraries, Archives, and Other Information Services (5192)

SIC

Miscellaneous Publishing (2741), Services-Allied To Motion Picture Production (7819)

akta.pro primary industry

Subtitling & Captioning Services (Timed Text, SDH/CC) (MPAHAFAA)

akta.pro secondary industry

Podcast Transcription, Captioning & Accessibility Services (MPACADAK)

Keywords

• Video summarization
• AI transcription tools
• YouTube content tools
• AI productivity software
• Text summarization services

Headquarters

HQ city

Lyon

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Software

Cost components

Technology or R&D, Infrastructure, Personnel, Marketing or Sales

Revenue model

1. Free Summarization (Ad/Affiliate Supported): Core summarization service is free, supported by light advertising and affiliate links. A previous Amazon affiliate experiment was discontinued due to low revenue.
2. Pro Features (Planned): Future paid tier planned for heavier features: in-depth chat with videos, summary translation, heavier AI models, advanced workflows for long-form content. Free summarizer and transcript extractor will remain free.
3. Premium AI Models: Option to reprocess with stronger AI models (Pro Reprocess feature) for improved summary quality when standard output feels incomplete or inaccurate

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

YouTubeSummary is a web-based SaaS that lets users paste a YouTube URL and receive an AI-generated summary with key points, timestamps, and notable quotes in under 30 seconds. It uses yt-dlp to extract available subtitles and GPT models (currently GPT-5.4-nano) to produce category-tailored summaries across formats such as Educational, Interviews, Product Reviews, News, Finance, Technology, Gaming, Sport, and Cooking. A companion Free Transcript Extractor pulls raw subtitles as plain text for download.

Product overview

YouTubeSummary is a free web-based service that uses AI to summarize YouTube videos. The core product accepts a YouTube URL and generates concise text summaries with key points and timestamps in under 30 seconds. The service is built around two complementary tools: the main YouTube Video Summarizer (which creates AI-powered summaries) and the free Transcript Extractor (which extracts raw subtitles as plain text for download). The product categorizes videos into types (Business, Finance, Sport, Cooking, Educational, Interviews, Reviews, News, Technology, Gaming, etc.) and applies category-specific prompts to improve accuracy. No account is required for basic use. A rebuild with SvelteKit is underway to add Pro features including chat-with-video, summary translation, and heavier AI models.

Differentiator

Problem solved

Functional benefit

Brands

• Free Transcript Extractor: Free transcript extraction tool that fetches available YouTube subtitles and returns them as clean plain text, with options to copy or download as .txt file.

Products and services

• YouTube Video Summarizer Core AI-powered web tool that accepts a YouTube URL, Shorts link, live replay, or video ID and returns a concise summary with main ideas, key points, timestamps, and notable quotes in under 30 seconds. Categorizes videos and applies tailored prompts per format. No account required for free use.
• Free Transcript Extractor Standalone free tool that extracts YouTube subtitles as clean plain text. Users can copy the transcript or download it as a .txt file for research notes, quotes, or content repurposing.
• Community History Community-curated archive of public video summaries that lets users browse recent summaries from other users and discover what the community is learning faster. Over 53,321 videos have been summarized as of June 2026.

Quantifiable outcome

• 60-80% reduction in research time for news, tech, policy, and lectures
• +2 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability5 records

Feature8 records

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Eightify: AI-powered YouTube video summarizer offering timestamped key points and ideas as a Chrome extension and web app. Direct competitor targeting the same horizontal use case of saving time on YouTube content.
• Summarize.tech: AI summarization service specifically focused on long YouTube videos (lectures, podcasts, events), producing chapter-based summaries. Same core workflow of paste-link-then-summarize for YouTube content.
• Video Highlight: AI tool purpose-built to summarize and extract highlights from YouTube and other video content with timestamps, notes, and sharing features — directly competing on the same use case.
• Glasp: Social web highlighter and AI summarizer that supports YouTube video summarization alongside article highlighting, with community-driven discovery and sharing of insights.

Broad incumbents

• Notta: Broader transcription and AI meeting-note platform that has expanded into video summarization, including YouTube import. Larger incumbent with a freemium model and paid tiers across audio/video workflows.
• Tactiq: Meeting transcription and AI summary tool with browser extension; expanded to support YouTube video summaries. Comparable in offering AI-generated summaries with timestamps and shareable outputs.
• ChatGPT: OpenAI's flagship chatbot can natively summarize YouTube URLs using browsing and reasoning capabilities, representing the broadest competitive threat as a free or subscription-funded alternative.

Emerging players

• Fathom: AI notetaker originally focused on meetings (Zoom, etc.) expanding into video content summarization, with comparable AI-generated summary, timestamp, and shareable output features.
• HARPA AI: Browser-based AI automation layer (Chrome extension) that includes YouTube video summarization among many other web-AI tasks, targeting power users who want a single tool across workflows.
• ScreenApp: AI video and screen recording tool with automatic transcription and summarization features for video content, including YouTube imports. Overlapping on video-to-summary workflow.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/_vdtdg
• GitHubgithub.com/vdtdg
• LinkedInlinkedin.com/in/valerian-de-thezan-de-gaussan

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about YouTubeSummary