# Sider vs Synopify

Sider records 2,644,740 monthly visits with -10.6% month-over-month growth and Freemium pricing. Synopify records 0 monthly visits with — growth and Free pricing.

| Metric | [Sider](https://openaitools.app/tool/sider) | [Synopify](https://openaitools.app/tool/synopify) |
| :--- | :--- | :--- |
| Website URL | https://sider.ai | https://chromewebstore.google.com/detail/synopify/cjambnblpmehbebdaedphlfglmlmedbn |
| Categories | AI Assistant, AI Chatbot, AI Writing Assistants, AI Reader | AI Summarizer, AI Article Summarizer, AI Assistant, AI Productivity Tools |
| Pricing Model | Freemium | Free |
| Monthly Visits | 2,644,740 | 0 |
| MoM Growth Rate | -10.6% | — |
| Primary Market | United States | Global |
| Direct Visits | 1,699,535 | 0 |
| Review Score | 4.5 | 4.2 |
| Saved Count | 31 | 0 |
| Supported Platforms | Website | Browser Extension |

## 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)

## Synopify

Synopify tackles a familiar problem: you land on a long page, a dense corporate site or an unfamiliar domain and you just want to know what it is about before investing time. The extension sits in your browser and, on demand, condenses all the content on the current page into a short, comprehensive overview. Instead of skimming headings and scrolling for minutes, you get the gist in a single view.\n\nWhat sets it apart from a plain summariser is the second half of its job. Synopify also tries to tell you who is behind the website. It uses the current tab's URL and title to extract insights about the page's content and to surface background information on the associated company, then presents a list of key facts alongside a condensed paragraph describing the page. That combination is useful for research, due diligence, sales prospecting and simply deciding whether a source is worth trusting.\n\nThe extension is distributed through the Chrome Web Store under the developer Synopify, based in Wellington, New Zealand. It is lightweight, installs as a normal Chrome add-on and runs in the browser where you are already reading. Its privacy disclosure notes that it handles personally identifiable information, authentication information, web history and website content, and that data is not sold to third parties.

**Pricing & Plans:** Free to install and use. There is no published paid tier; the extension is distributed through the Chrome Web Store at no cost.

- **One-click page summary:** Condenses all content on the current tab into a concise, comprehensive overview you can read in seconds.
- **Company background insights:** Uses the URL and page title to surface who the site belongs to, adding context beyond the article text.
- **Key information list:** Presents a structured list of key facts about the website next to the summary paragraph.
- **Skip manual scrolling:** Understand long articles, landing pages and corporate sites without reading through everything yourself.
- **Runs in Chrome:** A compact extension that works in the browser you are already using, with no separate app to open.

**Strengths:** Combines page summarisation with company background in one view; Removes the need to scroll through long pages to find the point; Free to install from the Chrome Web Store with no signup required; Works on the page you are already reading, so there is no context switching

**Limitations:** Quality depends on how clearly the target page is written and structured; Chrome-only, so it is not available for other browsers; Summaries of very short or media-heavy pages add little value

[Profile (Markdown)](https://openaitools.app/tool/synopify.md)

## Frequently Asked Questions

### How do Sider and Synopify compare in monthly traffic?

Sider has 2,644,740 monthly visits, while Synopify has 0. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Sider has a month-over-month growth rate of -10.6%; Synopify has —.

### How does pricing compare?

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. Synopify: Free. Free to install and use. There is no published paid tier; the extension is distributed through the Chrome Web Store at no cost.

## 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 | [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) |
| 5 | [Merlin AI](https://openaitools.app/tool/merlin-ai-plugins) | 1,382,634 | +13.1% | Freemium | One AI assistant that plugs ChatGPT, Claude and Gemini into every tab | [.md](https://openaitools.app/tool/merlin-ai-plugins.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 | One browser agent that combines every major AI model with web automation | [.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 | Summarize, bookmark and write with AI right in your browser | [.md](https://openaitools.app/tool/kome-ai.md) |

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Source: https://openaitools.app/compare/sider-vs-synopify

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)