Bulk URL Opener
A Whole List, One Press

Why Opening Tabs Needs A Tool At All

Opening twenty addresses by hand is twenty copies, twenty pastes and a lost place in the list. A minute of work, several times a day.

A page can do it in one press. The catch is that browsers treat a page opening tabs as a popup, and every browser has blocked popups by default for twenty years.

The rule is narrow and sensible. A tab that opens while the browser still handles your click gets through, and window.open after that moment does not.

So this opener does everything synchronously from the button press. If your browser still blocks them, the message says so rather than leaving you guessing.

Who Actually Needs This

SEO and content teams checking a list of pages after a deploy. Support staff opening a batch of tickets. Anybody comparing twenty competitor pages at once.

Researchers with a list of sources, and developers opening every environment of one app. The list is always somewhere else, in a spreadsheet or a report.

That is why this takes a plain list rather than a saved collection. The list you have is already the list you want.

Links the Opener Ignores, and the Reason

Every address that uses a scheme other than http or https. A pasted document can carry javascript: or data: lines, and opening either from a page is how a scam works.

Duplicate URLs, unless you switch that off. A list exported from a crawl usually has the same address three times, and three identical tabs help nobody.

Lines that are not addresses at all. The panel counts those and shows the reason, so nothing disappears quietly.

How Many Tabs A Browser Will Take

Twenty is comfortable on a laptop. Fifty is slow. Two hundred will make most machines swap to disk and stop responding for a while.

Memory is the limit, not the browser. Each tab loads its own page, its own images and its own scripts, so a heavy site costs far more than a light one.

So work in batches. Paste twenty, check them, close the lot with one keystroke, then paste the next twenty.

On a phone, halve every number above. Mobile browsers quietly unload background tabs, and a reloaded tab loses whatever you had scrolled to.

Jobs This Actually Saves Time On

Checking a redirect list after a migration. Paste the old addresses and watch where each one lands.

Reviewing a competitor set. Ten product pages side by side tell you more in five minutes than a spreadsheet does in an hour.

Opening every page a crawl flagged. The crawler gives you a column of addresses, and this turns that column into something you can read.

Checking your own site after a deploy. Keep a saved list of the twenty pages that matter, and paste it whenever anything ships.

Each Tab Gets noopener

Denwix opens every tab with noopener, so the page that opens cannot reach back into this one. One word, and it closes a real hole.

Where the Tab Count Starts to Hurt

Twenty tabs is comfortable on most machines. Fifty is the cap here, and it is a cap rather than a suggestion for a reason.

Each tab is a process with its own memory. A hundred at once will slow any laptop to a crawl, and some of them will fail to load at all.

Work in batches instead. The limit box remembers what you set, so a long list becomes five presses rather than one bad decision.

Cleaning A List Before You Open It

Exports arrive messy. Quotes around each row, a trailing comma, a stray bracket from a JSON dump.

All three get trimmed here. What they cannot fix is a list with the wrong column in it, so check the first row before you press.

Repeated URLs cause the second most trouble. A crawl export repeats an address once per link to it, which can mean forty copies of one page.

The skip switch handles those. The count tells you how many it removed, which is often the more interesting number.

When A Tab Fails To Load

A tab can open and still show nothing. Usually the address is dead, or the site refuses a request that arrives without a referrer.

Check the list with a status checker first when that keeps happening. Twenty tabs of error pages is a slow way to learn a list is stale.

Some sites also block being opened in a background tab. That is their choice, and nothing on this side can change it.

Nothing Here Is Loaded By This Page

The addresses go straight to your browser. This site never fetches them, never sees the responses, and keeps no record of your list.