Instant tl;dr on any article — key sentences highlighted right on the page
This is our editors' assessment out of 5, not an average of user ratings. The viewpoints on this page are written by AI from what we know about the product. They are not customer reviews.
According to OpenAITools.app telemetry verified on 2026-11-11, Auto Highlight (chromewebstore.google.com) is an AI platform indexed under AI Article Summarizer generating 0 monthly visits with a month-over-month traffic delta of +0 (0.0%). Its primary geographic market is Global (— traffic share), and it operates on a Free pricing model. Top competing alternatives by monthly volume include Summarizer.org (398.51K visits/mo), tl;dr AI Summarizer (2.14K visits/mo), Glarity (188.82K visits/mo).
Instantly highlights key sentences, saves me reading endless walls of text.
Open source and no data tracking, absolute legend of an extension.
Sometimes misses the actual thesis statement in academic papers.
Quick visual summary right on the page without loading external tabs.
AI-synthesized perspectives grounded in live site inspection, pricing structure, and category benchmarks — presented as editorial viewpoints rather than individual customer testimonials.
Click the highlighter icon in the address bar and the extension immediately marks the sentences that carry the article's core meaning.
Each additional click increases or reduces how much of the article gets highlighted, so you can dial coverage up or down to taste.
Important sentences are ranked from term frequencies across the full article, a lightweight extraction-based summarization technique.
The toolbar icon visually shows "ink" running out as more highlighting is applied, giving instant feedback on current coverage.
The source code is published on GitHub, the privacy policy states no data is collected or transmitted, and options stay local.
Auto Highlight is a free Chrome extension built by independent developer Danny Adam (dannyadam.com). Instead of generating a summary somewhere else, it works directly on the page: click the highlighter icon in the address bar and the extension paints the most important sentences of the article in a highlight colour, giving you an instant visual tl;dr.
Under the hood it uses extraction-based summarization — sentences are scored by how frequently their terms appear across the whole article. That keeps it fast, entirely client-side and easy to understand, but also means it highlights important-sounding sentences rather than producing polished abstractive prose. The amount of highlighting is adjusted by clicking the icon repeatedly, and the icon itself shows less "ink" as coverage grows.
The extension is open source, with code hosted on GitHub, and its privacy policy states that it does not collect user data or transmit anything remotely. It is rated around 3.6 stars from roughly 25 reviews with about 20,000 users, and the last update (v3.6.0) landed in March 2024. It is best suited to standard HTML articles — news, blogs, long-form posts — rather than PDFs or scanned documents.
Skim the essential sentences of a long news or blog piece before deciding whether to read it in full.
Speed up literature and source scanning by jumping straight to the sentences carrying the main information.
See the load-bearing sentences of a competitor or reference article quickly to grasp its arguments.
Users who want short control over consent and analytics can enjoy a reading aid that never transmits data remotely.
Side-by-side telemetry comparison of competing AI tools in the same primary category
| Rank | AI Tool | Monthly Visits | MoM Growth | Direct traffic share | Pricing | Head-to-Head |
|---|---|---|---|---|---|---|
| ● | Auto Highlight | 0 | — | — | Free | Current |
| 1 | Summarizer.org | 398.51K | +1.3% | 26% direct | Freemium | vs Summarizer.org |
| 2 | tl;dr AI Summarizer | 2.14K | -11.5% | 40% direct | Free | vs tl;dr AI Summarizer |
| 3 | Glarity | 188.82K | -49.6% | 7% direct | Freemium | vs Glarity |
| 4 | Kome AI | 174.91K | -6.5% | 30% direct | Freemium | vs Kome AI |
| 5 | Glasp | 889.56K | -14.1% | 45% direct | Freemium | vs Glasp |
| 6 | TLDR This | 82.61K | -20.5% | 28% direct | Free | vs TLDR This |
Free AI Summarizer for text, articles, URLs and images
Free AI Summarizer for text, articles, URLs and images
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A smart reading companion that instantly condenses any web article into short bullet points
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Turn any long article or webpage into a clean, clickable summary in one click
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One free Chrome extension that summarizes websites, YouTube videos and PDFs in a single click
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One-click AI summaries of any web page
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One-click AI summaries for everything you have to read or watch
Bottom Line Up Front for every page, PDF and video you read
Bottom Line Up Front for every page, PDF and video you read
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Bite-sized book and podcast insights you can finish in 15 minutes
Free / Open-sourceRight-click any text and get an AI summary
