Readable records 67,606 monthly visits with -0.1% month-over-month growth and Free Trial, Paid, Contact for Pricing pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.
AI PDF translation that keeps the original layout intact
AI sidebar and browser agent for reading, writing and research
| Dimension / Metric | ||
|---|---|---|
| Official Domain | readable.jp | sider.ai |
| Pricing Model | Free Trial, Paid, Contact for Pricing | Freemium |
| Monthly Visits | 67.61K (67,606) | 2.64M (2,644,740) |
| MoM Traffic Delta | -55 (-0.1%) | -314.2K (-10.6%) |
| Primary Market & Share | 🇯🇵 Japan (97.9%) | 🇺🇸 United States (13.3%) |
| Direct Visits / mo | 32.64K | 1.7M |
| User Rating | 4.3 | 4.5 |
| Supported Platforms | Website | Website |
AI PDF translation that keeps the original layout intact
Tables, figures and diagrams stay where they were, so context and data structure survive translation and you can share the result as-is.
Pro Premium and Business plans accept a single file of up to 1,000 pages and 200 MB, so long reports and manuals do not need splitting.
Register your own glossary so product names, abbreviations and internal terminology always come out with the same wording.
Translate and download as often as you like on a flat monthly plan, and work with online files directly through the Chrome extension.
AI sidebar and browser agent for reading, writing and research
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 long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material.
Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move.
Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider.
Free AI document translation that keeps your original layout intact
Free AI document translation that keeps your original layout intact
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
AI document translation that keeps your original layout intact
AI document translation that keeps your original layout intact
SpecialistTranslate documents of any format while keeping the original layout
SpecialistTranslate documents of any format while keeping the original layout
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.
Free AI-powered PDF translation with layout preserved
Free AI-powered PDF translation with layout preserved
