https://www.coreshift.cn/ 2026-02-26 daily 1.0 https://www.coreshift.cn/#pdf2word 2026-02-26 weekly 0.9 https://www.coreshift.cn/#pdf2excel 2026-02-26 weekly 0.9 https://www.coreshift.cn/#pdf2ppt 2026-02-26 weekly 0.9 https://www.coreshift.cn/#merge 2026-02-26 weekly 0.8 https://www.coreshift.cn/#split 2026-02-26 weekly 0.8 https://www.coreshift.cn/privacy 2026-02-26 monthly 0.3 https://www.coreshift.cn/terms 2026-02-26 monthly 0.3