ExtSpot
Sumbox - YouTube & web summarizer icon

Sumbox Chrome Extension Analysis

AI & Writing Assistants

Store listing title: Sumbox - YouTube & web summarizer

Chrome extension ID: eaoppjhofpaacmiicaeeinegcabafioi

Sumbox is a Chrome extension that provides AI-generated summaries, TL;DRs, and formatted transcripts for YouTube videos and web articles. It supports multi-language processing, multiple export formats, and operates directly within the browser's side panel.

Developer:michal.wlosik
Version:1.7.2
Size:61.38KiB
Last updated:
View developer profile
External:Chrome Web StoreOfficial website

Overview

Installs

54

Rating

★ 5.0

4 reviews

Languages

1 locales

Includes English

Market analysis

Review-backed positioning, friction, and market signals for this Chrome extension.

Backed by review samples

Macro category

AI & Writing Assistants

Pricing friction

Low review signal

Complaint intensity

Low review signal

Listing & review signals
Observed signals from store listing text and review samples.

Listing positioning

Sumbox positions itself as a speed-focused productivity tool that utilizes AI to process long-form content in parallel. It emphasizes seamless integration into the Chrome side panel, allowing users to generate structured insights without interrupting their browsing flow.

Inferred product pattern

Single-purpose AI utility focused on content digestion and workflow integration via side-panel UI.

Review-backed pain points

Review-backed data is not available as all captured reviews are positive.

Observed feature gaps

No specific feature gaps identified; users report that the product functions as expected.

Tags
AI SummarizerYouTube SummarizerSide PanelProductivityKnowledge Management
Target users

- Professionals

- Students

- Content Creators

- Researchers

Primary use cases

- Summarizing YouTube video transcripts

- Extracting key insights from web articles

- Exporting research to Markdown or Notion

- Navigating video content via timestamps

Positive themes

- Ease of use

- Simplicity

- Reliable performance

Negative themes

No negative theme data.

Observed friction

- No pricing friction reported in current reviews.

Evidence boundary: Evidence is derived from the Chrome Web Store listing, the developer's privacy policy, and available user feedback. Review volume is low, providing limited sentiment depth.
Complaint summaries
Review-backed complaint signals grouped by operational area.

Support

No support complaints reported.

Reliability

No reliability complaints reported.

Privacy

No privacy complaints reported.

Access & pricing

- No clear monetization signal

- No account requirement observed

- No clear pricing signal

Store listing facts

Listing assets

- Screenshots: 5

- Videos: 0

- Languages: 1

Trust signals

- Privacy policy

- Developer contact

- Official website

Store metadata

- Version: 1.7.2

- Size: 61.38KiB

- Last updated:

Store description excerpt
Short excerpt from the public Chrome Web Store listing; full copy is available on the official store page.
Sumbox summarizes YouTube videos and web articles in seconds — right inside Chrome's side panel. Click Summarize on any video or article, and get structured insights without leaving the page. 🎯 WHAT YOU GET Every summary is structured into clear sections so you can go as deep as you need: 1. TL;DR — Bullet-point highlights of the most important takeaways. Perfect for deciding if something is worth your full attention. 2. Summary — A comprehensive narrative covering all major points. Understand the full picture without watching or reading. 3. Formatted Script (YouTube videos only) — A clean, readable transcript with clickable timestamps. Click any timestamp to jump directly to that moment in the video. ⚡ BUILT FOR SPEED Sumbox uses parallel processing to deliver results up to 5x faster than traditional summarizers. Long video? Sumbox splits the transcript into chunks, processes them sim…

Listing SEO keywords

Search intent keywords
Keyword signals for evaluating how users may discover, compare, or search for this extension category.

Core discovery

YouTube video summarizerAI article summary chrome extensionTL;DR generatorChrome side panel summarizer

Comparison

Sumbox vs Glaspbest YouTube summarizer extension

Problem

how to summarize long youtube videosquickly read long articles

Alternative

Notion AI alternativesYouTube transcript tools

Similar extensions

Jump to related discovery paths:

More in toolsMore from this developer

FAQ

What is Sumbox mainly used for?
Sumbox is a Chrome extension that provides AI-generated summaries, TL;DRs, and formatted transcripts for YouTube videos and web articles. It supports multi-language processing, multiple export formats, and operates directly within the browser's side panel.
What market signals stand out?
Early or small audience with limited review base. Last known update: 05/18/2026.
What should builders compare before entering this space?
Compare install concentration, rating quality, update recency, screenshots, developer portfolio, listing claims, and review-backed friction signals.
Is this page review-backed?
Backed by review samples. This page combines store metadata with selected review signals, while raw store metrics remain visible for comparison.

Screenshots

Sumbox - YouTube & web summarizer screenshot
Sumbox - YouTube & web summarizer screenshot
Sumbox - YouTube & web summarizer screenshot
Sumbox - YouTube & web summarizer screenshot
Sumbox - YouTube & web summarizer screenshot

Links

Website: sumbox.app

Privacy policy: http://www.sumbox.app/privacy

Recommended Chrome extensions

Related listings from the same category, trending peers, and the same publisher portfolio.

Browse tools
Sidecue - AI Meeting & Interview Copilot icon

Sidecue - AI Meeting & Interview Copilot

michal.wlosik

Real-time AI cues for meetings and interviews. Works with Google Meet, Zoom, and Teams in Chrome.

Installs

112

Rating

★ —

WebChatGPT: Prompt library with web access icon

WebChatGPT: Prompt library with web access

WebChatGPT

Augment your ChatGPT prompts with relevant web search results through web browsing.

Installs

1.0M+

Rating

★ 4.2

Ecosia - The search engine that plants trees icon

Ecosia - The search engine that plants trees

Ecosia GmbH

This extension sets your search engine to Ecosia and customizes your new tab page so you can plant trees with every search.

Installs

1.0M+

Rating

★ 4.7

BlockSite Block Websites & Stay Focused icon

BlockSite Block Websites & Stay Focused

BlockSite

Stay focused and boost productivity: Custom blocklist, Scheduled site blocking, and Password protection.

Installs

1.0M+

Rating

★ 4.5

YouTube Summary with ChatGPT & Claude icon

YouTube Summary with ChatGPT & Claude

Glasp

Summarize YouTube videos, web articles, and PDFs to save time, powered by ChatGPT, Claude, Mistral AI, and Gemini.

Installs

1.0M+

Rating

★ 4.3

Screen Recorder & Screenshot App for Chrome | Scrnli icon

Screen Recorder & Screenshot App for Chrome | Scrnli

scrnli

Screen recorder for Chrome: capture, edit, share screenshots and videos instantly

Installs

1.0M+

Rating

★ 4.7

Transpose ▲▼ pitch ▹ speed ▹ loop icon

Transpose ▲▼ pitch ▹ speed ▹ loop

Tune73

Change the pitch and speed of music and loop sections directly on YouTube, Spotify and many other streaming platforms.

Installs

1.0M+

Rating

★ 4.5

CSFloat Market Checker icon

CSFloat Market Checker

CSFloat Inc.

Shows the float value, paint seed, and more of Counter-Strike (CS:GO & CS2) items on the Steam Market or Inventories

Installs

1.0M+

Rating

★ 3.9

Video Downloader Plus icon

Video Downloader Plus

Video Downloader Plus

Download and save videos from any website instantly. A fast, simple video downloader that just works.

Installs

1.0M+

Rating

★ 4.5

Wordtune: AI Paraphrasing and Grammar Tool icon

Wordtune: AI Paraphrasing and Grammar Tool

Wordtune

Unlock your potential with Wordtune's free AI writer – paraphrase, rewrite, translate, fix grammar, and more.

Installs

1.0M+

Rating

★ 4.6