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URL Opener

開発者

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入力

出力

クライアント側

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ガイド

URL Opener

Open multiple URLs at once by pasting a list and clicking a single button. Instead of opening links one by one, paste your entire URL list and let this tool open them all in new browser tabs simultaneously. Ideal for QA testing, checking multiple pages, reviewing search results, or opening a batch of bookmarks.

使い方

Paste your URLs into the text area (one per line), optionally set a delay between tab opens to avoid popup blockers, and click Open All. Each URL opens in a new browser tab. The tool auto-adds https:// to URLs missing a protocol and reports how many tabs were successfully opened.

特徴

Bulk Tab Opening – Open dozens of URLs in new tabs with a single click
Auto Protocol – Automatically prepends https:// to URLs missing a protocol
URL Validation – Skips empty lines and invalid URLs, reports any that couldn’t be opened
Adjustable Delay – Set delays between tab opens (0ms, 500ms, 1s, 2s) to avoid popup blocker interference
Popup Blocker Detection – Alerts you if the browser blocks tab opens so you can allow popups
クライアントサイドのみ – All processing happens in your browser with no data sent to any server

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 よくある質問

Why does my browser block some tabs from opening?

Modern browsers include popup blockers that prevent websites from opening multiple tabs without direct user interaction. When this tool opens many URLs rapidly, the browser may interpret some as unwanted popups. To resolve this, allow popups for the site in your browser settings, or use the delay option to stagger tab opens — a 500ms-2000ms delay between opens typically avoids triggering popup blockers.
Is there a limit to how many URLs I can open at once?

There is no hard limit in the tool itself, but practical limits depend on your browser and system resources. Opening 50-100 tabs simultaneously can slow down most computers significantly. For very large URL lists, consider opening them in batches of 20-30 with a delay between opens to give your browser time to load each page.
What URL formats are supported?

The tool accepts any valid URL including http://, https://, and protocol-relative URLs. If you paste a URL without a protocol (like example.com), the tool automatically prepends https://. Each URL should be on its own line. Empty lines and whitespace are automatically ignored.