サイトマップ

csr.plus のすべての公開ページ（13言語）と、検索エンジンや AI エージェントがサイトをインデックスするのに役立つ機械可読ファイル（sitemap.xml と llms.txt）。

XML サイトマップ

csr.plus のすべての公開ページ（13言語）——ツール、記事、API 概要、API リファレンス、法務ページ。サイトマップはリリースのたびに自動生成され、検索エンジンは常に最新のコンテンツを発見できます。

LLMS.txt

llms.txt 標準に従い、このプレーンテキストファイルは AI エージェントと言語モデルにサイトの信頼できる索引を提供します：すべてのツール、API エンドポイント、記事に短い説明付き。エージェントを https://csr.plus/llms.txt に向けて開始できます。

llms.txt

# CSR.plus

> Free, privacy-first online SSL/TLS certificate tools. All cryptographic operations run locally in your browser — private keys never leave your device. Available in 13 languages (en, zh, zh-Hant, es, fr, de, ja, ko, ru, it, ar, vi, th).

## Tools

- [CSR Generator](https://csr.plus/tools/csr-generator): Create CSR (RSA 2048/4096, ECDSA P-256/P-384) with optional SANs, directly in the browser.
- [CSR Decoder](https://csr.plus/decoder): Parse CSR subject, public key and full X.509v3 extensions.
- [SSL Certificate Checker](https://csr.plus/check): Check certificate validity, expiry, chain and hostname coverage for any domain.
- [Bulk SSL Checker](https://csr.plus/bulk): Check up to dozens of domains in one request.
- [SSL Monitor](https://csr.plus/monitor): Track certificate expiry and renewal health over time.
- [SSL/TLS Tracer](https://csr.plus/tools/ssl-tracer): Trace the exact TLS handshake, protocols and cipher suites.
- [Certificate Inspector](https://csr.plus/tools/cert-inspector): Inspect a full certificate chain, key usage and extensions.
- [OpenSSL Trace](https://csr.plus/openssl-trace): Simulate and explain OpenSSL commands step by step.
- [Uptimeless](https://csr.plus/uptimeless): Browser-based website uptime monitoring with local history.
- [SSL Toolkit](https://csr.plus/tools): Growing set of free SSL/TLS utilities.

## API

- [CSR Generation API](https://csr.plus/api): Free REST API to generate CSRs programmatically. No signup, no API keys.
- [API Reference](https://csr.plus/docs/api): POST /api/generate endpoint, parameters, response format, error codes and rate limits.

## Articles

- [SSL/TLS Statistics 2026](https://csr.plus/articles/ssl-tls-statistics-2026): Report with TLS 1.3 adoption, CA market share and certificate trends. (13 languages)
- [What is OCSP Stapling](https://csr.plus/articles/what-is-ocsp-stapling): Guide to OCSP stapling, handshake latency and how to enable it. (13 languages)
- [TLS 1.2 Deprecation 2026](https://csr.plus/articles/tls-1-2-deprecation-2026): News: Apple/Google/Mozilla cutover timeline and what site owners must do. (13 languages)
- [How to Generate a CSR](https://csr.plus/articles/how-to-generate-csr)
- [SSL Certificate Guide 2026](https://csr.plus/articles/ssl-certificate-guide)
- [RSA vs ECDSA](https://csr.plus/articles/rsa-vs-ecdsa)
- [Common SSL Errors](https://csr.plus/articles/common-ssl-errors)
- [SSL Security Best Practices](https://csr.plus/articles/ssl-security-best-practices)
- [Ultimate Guide to CSR and SSL Certificates](https://csr.plus/articles/ultimate-guide-csr-plus-ssl-certificate)
- [Why Website Security Matters](https://csr.plus/articles/why-website-security-matters)
- [CSR.plus vs Traditional Methods](https://csr.plus/articles/csr-plus-vs-traditional-methods)
- [Common SSL Certificate Problems Solved](https://csr.plus/articles/common-ssl-certificate-problems-solved)

## Pages

- [Home](https://csr.plus/)
- [About](https://csr.plus/about)
- [Privacy Policy](https://csr.plus/privacy)
- [Terms of Service](https://csr.plus/terms)

## Facts

- Domain: csr.plus
- All tools are free and run client-side; no private key data is ever uploaded.
- Contact: support [at] csr [dot] plus