What is Instapaper?
Direct Answer: Instapaper is an app operated by Instant Paper that lets people save articles to read later.
Instapaper is a service that allows users to save articles for later reading. It is operated by Instant Paper. The bot uses user-agents 'Instapaper/4.0' and 'Instaparser/1.0'.
User-Agent Identification
The following user-agent strings identify Instapaper in your live traffic data:
Instapaper/4.0Instaparser/1.0
robots.txt Rules for Instapaper
Respects robots.txt: No
Robots.txt has limited effect on user-initiated bots
Instapaper is triggered by user actions within Instant Paper's products. While Instant Paper states it respects robots.txt, the bot operates differently from autonomous crawlers — it fetches specific URLs on demand rather than systematically spidering your site. Server-log monitoring is the only reliable way to verify what actually happens.
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Crawl Behavior
Frequency:Not Documented
Request Pattern:Not Documented
Crawl Activity Index
Relative crawl activity for Instapaper over the past 28 days. Higher values indicate increased crawling intensity compared to the period baseline.
View recent activity data (last 7 days)
| Date | Activity Index |
|---|---|
| Mar 28, 2026 | 2.8 |
| Mar 29, 2026 | 2.9 |
| Mar 30, 2026 | 2.4 |
| Mar 31, 2026 | 3.8 |
| Apr 1, 2026 | 29.4 |
| Apr 2, 2026 | 5.0 |
| Apr 3, 2026 | 5.3 |
Source: Cloudflare Radar
Why track Instapaper traffic?
Identify and classify unknown crawler activity. Instapaper may appear in your live traffic data with varying frequency. Tracking its behavior helps you decide whether to allow, throttle, or block it based on actual data.
Protect your crawl budget. Every bot request consumes server resources. Understanding what Instapaper crawls helps you prioritize the crawlers that matter.
Log Verification
To verify Instapaper traffic in your live traffic data:
- Search access logs for the user-agent strings listed above
- Check if the IP addresses match documented ranges (if provided by Instant Paper)
- Verify the crawl pattern matches documented behavior
- Use reverse DNS lookup for additional verification if available
Note: Observed behavior in production environments may differ from official documentation. Live traffic monitoring provides the only reliable verification of actual bot behavior.
Undocumented Information
The following information is not officially documented for Instapaper:
- crawl frequency
- IP verification
- JavaScript rendering
- purpose details
Official Documentation
View Official Instapaper Documentation →
Information sourced from official documentation. Content generated with AI assistance.