按设定间隔自动重新加载 iframe。目标若禁止嵌入则无法预览。
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A webpage auto refresh tool embeds the target page in an iframe and reloads it automatically at a set interval, which is handy for checking whether content has updated, watching dynamic data change, or bypassing cache with a cache-busting parameter. Each reload appends a timestamp parameter to help fetch the freshest content instead of cached copies.
_r=timestamp parameter to bypass cache, working alongside URL fragmentsGreat for watching live dashboards, testing cache refresh policies, or monitoring page changes automatically. Note that the target page must allow embedding in an iframe (no X-Frame-Options / frame-ancestors restriction), otherwise it cannot be previewed.