JSK Multi URL Opener documentation

Installation

Install from your browser's store, or load an unpacked build during testing.

Chrome and Edge — install from the store listing, then pin the toolbar icon so it is one click away.
Firefox — requires Firefox 140 or newer (desktop). The side panel appears as a Firefox sidebar, which opens once after installing.
Opera — the workspace lives in Opera's sidebar; the popup's Workspace button opens it in a tab.

On first install a documentation tab opens once. Updates never reopen it.

The first time you open the popup you will see a short card with a Try an example button, which loads three sample links so you can see the whole loop immediately. Dismiss it and it will not come back.

Setup and account

You do not need an account. Opening links, big-batch controls, cleanup, ordering, import and export, number-range patterns and three saved lists all work anonymously, with no permissions granted and nothing leaving your device.

Signing in unlocks more. To sign in, open Settings — the gear in the side panel, or the extension's Options page — and:

In JSKAPPS account, click Get your key from your JSKAPPS dashboard.
Create a key and scope it to this product. The key is shown only once, so copy it immediately.
Paste it into API key and click Connect. You will be asked to allow access to the JSKAPPS API at this point (Firefox also asks consent for the data sent); it is used only to check which plan you are on.

The section then shows your plan line — for example Multi URL Subscription · access until 8 Nov 2026, … trial · 5 days left (ends 23 Oct), Free or Free · no plan yet — the first characters of your key, and when the plan was last checked, with Check again. Offline, your plan keeps working from the last successful check for up to 14 days; a trial always ends on its end date.

Rotating your key keeps all your data. Your lists belong to your account, not to a particular key, so use Replace key freely. If a key from a different account is connected on the same browser, the extension asks first; continuing clears that browser's lists, history, templates, environments and schedules (settings stay) so nobody inherits someone else's data — this cannot be undone.

To sign out, use Disconnect. Signing out keeps your local lists and settings.

Core concepts

Four ideas make the rest of this page make sense.

The editor is the workspace. Everything operates on the list of lines in the text box: patterns expand it, cleanup shrinks it, managers write into it. The counter underneath always tells you what will actually happen — how many links are ready, how many were skipped, how many duplicates were removed.

Skipped is not an error. Lines that are not usable links are counted as skipped and never opened, rather than opening something unexpected. Bare domains such as example.com get https:// added automatically, and unsafe schemes are always blocked.

Modes decide the shape, Advanced decides the pace. The Mode dropdown chooses where tabs land. The Advanced drawer controls how fast they arrive and what is cleaned up on the way.

Tiers gate depth, never volume. There is no limit on how many links you can open on any plan. Paid features add capability — advanced patterns, environments, scheduling — not headroom.

Feature guide

Open modes

Choose from the Mode dropdown. Available on all plans.

New tabs — every link in a tab in the current window. The default.
New window (each) — one new window per link.
One window (all) — a single new window containing every link.
Group by domain — tabs grouped into a tab group per site, named after the site (Firefox: grouped but unnamed).
Single tab group — everything in one named tab group (Firefox: unnamed).
One by one — reuses a single tab, loading each link in turn. Requires a delay; without a pause the pages flash past and only the last remains visible.
Incognito window — all links in one private window. Firefox opens it only if you allow the add-on in private windows (Add-ons ▸ Multi URL Opener ▸ Run in Private Windows); the extension tells you when that's needed.

Big-batch controls

In the Advanced drawer. Available on all plans.

Lazy-load — tabs open instantly but only load when focused. The single most useful setting for large lists.
Delay — milliseconds between tabs, so a site does not throttle you.
Open first N — caps the batch without editing your list.
New window per batch of N — splits a long list into manageable windows.
Auto-close — closes each opened tab after a set number of seconds.
Stop, Pause and Resume — available from the progress bar during any run.

A confirmation appears above your large-batch threshold, and a single batch is capped at 10,000 links.

Cleanup and ordering

Duplicates, blank lines and unusable links are handled automatically. Optionally:

Clean tracking — strips utm_*, gclid, fbclid and similar, and collapses links that differ only by them. Requires Free.
Order — original, reverse, random, A–Z, or grouped by domain. All plans.
Remove opened after run — clears what you just opened out of the editor. All plans.

Bringing links in and out

From the Add menu: From tabs, From page, Extract from text, and Import file (.txt or .csv — the most link-like column is detected automatically and a header row is ignored). You can also drag a file onto the editor.

From page reads the page you opened the toolbar popup on; from the side panel it can only read a page you clicked the toolbar button on, and it tells you so. Extract from text keeps only the links in pasted text — full http(s) links, plus bare domains like example.com/page — and ignores email addresses, file names and the punctuation around links.

From the Export menu: copy to clipboard, save as .txt or JSON, or export into a bookmarks folder.

The optional right-click menu adds Open links in selection: select text on any page, right-click, and every link inside the selection opens. It reads real hyperlinks, not only URLs written out as visible text.

URL patterns

Turn on Templating in the Advanced drawer, then write one line instead of many.

example.com/page/[1-50] — pages 1 to 50. All plans.
example.com/[001-050] — zero-padded, width inferred from how you write it. All plans.
example.com/[0-100:25] — steps of 25. All plans.
example.com/[a-e] — letter range. Pro.
example.com/{us,uk,de} — one URL per value. Pro.
example.com/{2026-01-01..2026-01-07} — one URL per date. Pro.
example.com/{token} — one URL per value of a saved named token. Pro.

Combining tokens on one line produces every combination, so example.com/[1-3]/{a,b} gives six URLs. Watch the counter before opening — combinations multiply quickly. Patterns you reuse can be saved in the Templates tab.

Search mode

Requires Free. Set Search in the Advanced drawer and any line that is not a link is run as a search instead of being skipped — Google, Google SEO mode, Google UK or IN, Bing, or DuckDuckGo. Add a site: filter to restrict every query to one domain.

Saved lists

In the side panel's Lists tab. Name a list, add comma-separated tags, and optionally a folder — there is no folder-creation screen; type a name and the filter builds itself from the names in use. You can search, sort, reorder manually, and tick also save current open settings so a list remembers how it should be opened.

Limits: 3 lists with no account, 25 on Free, unlimited on Pro. Folders require Free. Turn on sync in Settings (Free) and lists travel between your own devices through your browser's built-in account sync — never our servers.

Environments

Requires Pro. Define base URLs such as staging and prod, put paths like /login in the editor, then expand paths across every enabled profile at once. Useful when the same set of pages must be checked on more than one host.

Schedules

Requires Pro. Auto-open a saved list on browser startup, every N minutes, daily at a time, or once at a set time. Timed schedules are armed the moment you add them — no browser restart is needed; only the on startup kind waits for one. The first run of an every N minutes schedule happens N minutes later, not immediately. The browser must be running for a schedule to fire.

Settings and options

Open Settings from the gear in the side panel, or the extension's Options page.

Appearance — theme: System, Light or Dark. Default: System.
Features — switch off any feature you do not use. It disappears from the popup and side panel and stops running, so you only see the tools you want. Default: all on.
Open defaults — the mode, delay, large-batch confirmation threshold (default 25) and lazy-load setting that a new session starts with.
JSKAPPS account — connect an API key, see your plan (and the days left of a trial), check it again, replace the key or disconnect.
Data — export or import your settings as JSON, or reset to defaults. Resetting does not delete saved lists.
Right-click menu — adds Open links in selection. Default: off.
Sync saved lists across devices — requires Free. Default: off.
Trust and permissions — shows exactly what the extension has been granted.

Keyboard shortcuts

Open the popup — no shortcut is set by default; assign one at chrome://extensions/shortcuts (listed as Activate the extension), edge://extensions/shortcuts, or in Firefox under Add-ons ▸ ⚙ ▸ Manage Extension Shortcuts.
Ctrl+K / Cmd+K — open the command palette, to run any action or load a saved list without the mouse.
Esc — close the command palette or an open menu.

Limitations and known issues

Tab groups have no names on Firefox. Group by domain and Single tab group group the tabs, but Firefox groups stay untitled.
The side panel is a sidebar on Firefox and Opera, hosting the same workspace.
"Allow file://" isn't offered on Firefox — Firefox doesn't let extensions open local file links.
Incognito on Firefox needs the add-on allowed in private windows.
From page works from the toolbar popup; the side panel can only read a page you opened the toolbar button on (a browser rule).
The interface is English only at present.
A single batch is capped at 10,000 links. A pattern that would exceed this is rejected with a clear message rather than attempted.
One by one requires a delay, by design.
Schedules only fire while the browser is running. A missed one-off runs shortly after the browser reopens.
This opens pages for a person to look at. It does not assert that a page loaded correctly, so it is not a replacement for automated testing.
Sync uses your browser's own account sync, so that must be enabled, and very large lists may stay local.

Troubleshooting

The Open button did nothing. Reopen the popup or side panel and try again. For a large batch, turn on lazy-load first.
A control I used has disappeared. It is probably switched off in Settings, under Features.
"Sign in" appears on a control. That feature needs the Free or Pro plan.
Fewer links opened than expected. Check Open first N in the Advanced drawer, and read the counter — duplicates and invalid lines are removed before opening.
A line was skipped. It was not a usable link, or used a blocked scheme such as javascript: or chrome:. Add https:// or correct the line.
A pattern did not expand. Templating is switched off, or the token is a Pro one on a lower plan — the line is then treated literally.
"JSKAPPS didn't accept that key." Create a new key in your JSKAPPS dashboard and paste it in.
"That key is for a different JSKAPPS app." Create a key for Multi URL Opener, or an account-wide key.
"…needs your permission to send your key to JSKAPPS." Click Connect again and choose Allow.
"Couldn't reach JSKAPPS." Your plan keeps working from the last check for up to 14 days; press Check again when online.
Incognito did not open (Firefox). Allow the add-on in private windows.
A schedule stopped firing. Open Schedules and toggle it off and on again to re-arm it.

Uninstalling

Remove the extension from your browser's extensions page, or by right-clicking the toolbar icon.

Uninstalling clears everything stored locally — saved lists, history, settings and your API key. Lists you had synced remain in your browser account's sync storage and reappear if you reinstall and sign in again.

A short, optional survey page opens when you remove it. Answering is voluntary, and the page carries no account identifier, no email, and nothing you opened or saved.

To clear data without uninstalling, use Settings, then Data, then Reset to defaults for settings, and delete lists individually in the Lists tab.

Release notes

0.2.0
- Trials work: a 15-day trial now unlocks Pro, and the popup shows how many days are left, with a reminder in the last three days
- A new JSKAPPS account section in Settings: your plan, trial days or renewal date, Check again, Replace key and Disconnect; the key shows only its first characters, like your dashboard
- If you go offline, your plan keeps working from the last check for up to 14 days
- Signing in also sends a random install ID with the plan check, so JSKAPPS can count how many devices a key is used on — random, never linked to you, and only if you sign in
- Firefox: signing in asks your consent for the data it sends; already signed in? Settings shows "Allow access"
- Firefox: scheduled opens can be created again, lazy-load really waits until you open a tab, and Incognito explains how to allow private windows
- "Extract URLs" keeps just the links — no more punctuation, email addresses or file names
- "From page" tells you what to do when the page can't be read, instead of failing silently
- A run now tells you if some links couldn't be opened
- Stop and Pause also control scheduled and right-click opens; pausing and then stopping during a delay always ends the run
- A revoked key or ended subscription no longer keeps paid features
- Fixed: typing quickly in the editor could drop characters; saved lists could be lost with sync on
- Saving a list under a taken name asks first; Random order reshuffles every time
- Now available for Opera, with the workspace in Opera's sidebar

0.1.1 (Firefox)
- Fixed sign-in and batch opening on Firefox

0.1.0 — first release
- Bulk opening in seven modes, with lazy loading, delays, batching, ordering and auto-close
- URL patterns, search mode, saved lists with tags and folders, and history
- Environment profiles and scheduled opens
- Side-panel workspace, command palette and right-click menu
- Settings with theme, per-feature switches, open defaults and data export/import