# Auto Highlight vs Sider Auto Highlight records 0 monthly visits with — month-over-month growth and Free pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing. | Metric | [Auto Highlight](https://openaitools.app/tool/auto-highlight) | [Sider](https://openaitools.app/tool/sider) | | :--- | :--- | :--- | | Website URL | https://chromewebstore.google.com/detail/auto-highlight/dnkdpcbijfnmekbkchfjapfneigjomhh | https://sider.ai | | Categories | AI Article Summarizer, AI Summarizer, Open Source AI Models | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader | | Pricing Model | Free | Freemium | | Monthly Visits | 0 | 2,644,740 | | MoM Growth Rate | — | -10.6% | | Primary Market | Global | United States | | Direct Visits | 0 | 1,699,535 | | Review Score | 3.6 | 4.5 | | Saved Count | 0 | 31 | | Supported Platforms | Browser Extension | Website | ## Auto Highlight 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. **Pricing & Plans:** Free. Auto Highlight has no paid plans, no subscription and no in-app purchases — it is distributed at no cost through the Chrome Web Store. - **One-click page highlighting:** Click the highlighter icon in the address bar and the extension immediately marks the sentences that carry the article's core meaning. - **Adjustable coverage on repeat clicks:** Each additional click increases or reduces how much of the article gets highlighted, so you can dial coverage up or down to taste. - **Term-frequency sentence ranking:** Important sentences are ranked from term frequencies across the full article, a lightweight extraction-based summarization technique. - **Visual ink-level indicator:** The toolbar icon visually shows "ink" running out as more highlighting is applied, giving instant feedback on current coverage. - **Open source and privacy-first:** The source code is published on GitHub, the privacy policy states no data is collected or transmitted, and options stay local. **Strengths:** Free and open source with code you can inspect; Instant tl;dr directly on the page — no copy-pasting into another tool; No account, no sign-up and no data collection; Adjustable highlight coverage via repeated icon clicks **Limitations:** Term-frequency approach can highlight obvious or repeating sentences instead of the truly key points; Coverage is adjusted by clicking the icon repeatedly rather than by fine-grained controls; Last updated March 2024 and only rated 3.6, reflecting some inconsistent page results; No native support for PDFs or images — it is built for HTML article text [Profile (Markdown)](https://openaitools.app/tool/auto-highlight.md) ## Sider Sider's premise is that you should not have to leave the page you are reading to use an AI assistant. Its sidebar overlays the browser, detects the content in view, and responds with chat, summaries, translations or explanations using frontier models from multiple providers. The result is a lightweight research and reading workflow: highlight a paragraph, ask for a simpler explanation, translate a PDF and keep the original in sight. Recent versions push Sider beyond chat. Sider Hand is a browser agent that works across real websites and uses your logged-in sessions to carry out multi-step jobs such as comparing prices while shopping, filling forms, doing cross-site research or triaging a Gmail inbox. Sider Code goes the other way, letting you instruct changes to a website's appearance or behaviour in plain language and preserving the customisation for next time. A Create module generates images, videos, slides and documents from the same panel. Pricing moves from a limited free tier to credit-based paid plans aimed at heavier users. Lower plans suit occasional chat, summarisation and translation, while higher tiers add a dedicated cloud computer that keeps the browser agent running around the clock and a larger monthly credit allowance. Sider ships as browser extensions for Chrome and Edge plus desktop and mobile apps for macOS, Windows, iOS and Android, and is used by a very large installed base. **Pricing & Plans:** Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans. - **AI sidebar on any page:** A persistent panel that reads the page you are on and answers follow-ups with GPT, Claude or Gemini without copying content into another tab. - **Summarise and chat with documents:** Summarise long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material. - **Translation and read-aloud:** Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move. - **Sider Hand browser agent:** Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions. - **Sider Code page customisation:** Describe a change in plain words and have Sider restyle or simplify any website, remembering the modification for future visits. **Strengths:** Works inside the browser you already use, with no context switching; Access to multiple frontier models from one subscription; Strong reading toolkit: PDF chat, YouTube summaries, translation and read-aloud; Increasingly capable agent features for multi-step browser tasks **Limitations:** Useful credits run out quickly on the free and lower tiers; Model availability and quota rules change over time, so expectations must be checked per plan; Some agent and code features depend on a cloud machine and heavier plans [Profile (Markdown)](https://openaitools.app/tool/sider.md) ## Frequently Asked Questions ### How do Auto Highlight and Sider compare in monthly traffic? Auto Highlight has 0 monthly visits, while Sider has 2,644,740. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? Auto Highlight has a month-over-month growth rate of —; Sider has -10.6%. ### How does pricing compare? Auto Highlight: Free. Free. Auto Highlight has no paid plans, no subscription and no in-app purchases — it is distributed at no cost through the Chrome Web Store. Sider: Freemium. Freemium. Free tier available with limited credits; paid plans advertised at roughly US$10/month for occasional use up to around US$100/month at the top tier, with higher credit allowances and a dedicated cloud computer on the upper plans. ## Alternatives | # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | [ChatGPT](https://openaitools.app/tool/chatgpt-4) | 6,048,022,723 | +2.2% | Freemium | OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research. | [.md](https://openaitools.app/tool/chatgpt-4.md) | | 2 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing. | [.md](https://openaitools.app/tool/claude-2.md) | | 3 | [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | -11.3% | Freemium | Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools. | [.md](https://openaitools.app/tool/monica-ai.md) | | 4 | [Blinkist](https://openaitools.app/tool/blinkist) | 1,633,056 | +19.3% | Freemium, Free Trial, Paid | Bite-sized book and podcast insights you can finish in 15 minutes | [.md](https://openaitools.app/tool/blinkist.md) | | 5 | [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | +13.1% | Freemium | Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features. | [.md](https://openaitools.app/tool/merlin-ai.md) | | 6 | [Glasp](https://openaitools.app/tool/glasp) | 889,564 | -14.1% | Freemium | Highlight the web, learn in public, and build your AI clone | [.md](https://openaitools.app/tool/glasp.md) | | 7 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider. | [.md](https://openaitools.app/tool/harpa-ai.md) | | 8 | [Summarizer.org](https://openaitools.app/tool/summarizer-org) | 398,509 | +1.3% | Freemium | Free AI Summarizer for text, articles, URLs and images | [.md](https://openaitools.app/tool/summarizer-org.md) | | 9 | [Glarity](https://openaitools.app/tool/glarity-summarize-google-and-youtube) | 188,823 | -49.6% | Freemium | Summarize YouTube, Google, and any page with AI — free in your browser | [.md](https://openaitools.app/tool/glarity-summarize-google-and-youtube.md) | | 10 | [Kome AI](https://openaitools.app/tool/kome-ai) | 174,910 | -6.5% | Freemium | Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider. | [.md](https://openaitools.app/tool/kome-ai.md) | --- Source: https://openaitools.app/compare/auto-highlight-vs-sider More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)