Is my Arc file uploaded anywhere?

No. The page reads the file with your browser and builds the downloads on your computer. Nothing is sent to a server, and nothing is stored after you close the tab.

Does Arc have its own export?

No. Arc keeps your sidebar in a file called StorableSidebar.json and has no button to export it. This page reads that file.

What are "Today tabs"?

The unpinned section of each Arc space. Arc archives them after a while, so they are off by default. If nothing in your spaces is pinned but Today has links, the page turns them on for you — otherwise you would get only your Favorites.

What does not transfer?

Easels, live folders and anything without a URL are skipped; the preview tells you how many. Split views are flattened into their separate tabs. Space colours and emoji stay in the JSON file but have no place in a bookmarks file.

Which browsers accept the bookmarks file?

Any browser that reads the standard Netscape bookmarks format: Chrome, Edge, Brave, Vivaldi, Firefox and Safari. Your spaces arrive as folders inside one "Arc" folder.

How is this different from importing into Leap?

Bookmarks give you a list of folders. Leap reads the same StorableSidebar.json directly and rebuilds it as spaces in a Chrome sidebar — Favorites become pinned sites, folders stay folders (up to three levels deep). Leap is free and needs no sign-up.

Export your Arc sidebar

Free, and it runs in your browser.

Arc has no export button. Drop its StorableSidebar.json below and get a bookmarks.html that any browser accepts, or a JSON of your spaces, folders and links. The file is read on your computer and never sent anywhere.

Where Arc keeps the file

macOS

~/Library/Application Support/Arc/StorableSidebar.json

Windows

%LOCALAPPDATA%\Packages\TheBrowserCompany.Arc_ttt1ap7aakyb4\LocalCache\Local\Arc\StorableSidebar.json

1
Quit Arc
Arc rewrites StorableSidebar.json while it runs. Quit it first so the file is complete.
2
Find the file on macOS
In Finder press Cmd+Shift+G and paste ~/Library/Application Support/Arc/StorableSidebar.json — the Library folder is hidden, so this is the quickest way in.
3
Or find the file on Windows
Paste %LOCALAPPDATA%\Packages into the Explorer address bar, open the TheBrowserCompany.Arc_… folder, then LocalCache → Local → Arc → StorableSidebar.json. The full path is %LOCALAPPDATA%\Packages\TheBrowserCompany.Arc_ttt1ap7aakyb4\LocalCache\Local\Arc\StorableSidebar.json. Some installs keep it in %LOCALAPPDATA%\Arc instead.
4
Drop the file on this page
The page reads it in your browser and shows your spaces, folders and links. Nothing is uploaded.
5
Download
Save bookmarks.html and open it from any browser’s bookmark import menu, or save the JSON to keep the full tree.

What comes across, and what doesn't

Comes across

✓Spaces, as folders with their names
✓Folders, nested as deep as Arc had them
✓Pinned tabs in every space
✓Favorites (the icons at the top), once per profile
✓Today tabs — only if you tick the box

Doesn't

✗Easels and live folders — skipped and counted in the preview
✗Split views — flattened into separate tabs
✗Links that are not web addresses (arc://, file://) — kept in the JSON, left out of bookmarks.html
✗Space colours and emoji — in the JSON only; bookmarks have no place for them
✗Archived tabs, history, passwords and Boosts — they are not in this file

Frequently asked questions

Keep working in spaces after Arc

Leap is a free Chrome sidebar with spaces, pinned sites and saved tabs. It reads StorableSidebar.json itself — on the first screen, pick “Moving from Arc, OneTab, Toby or Workona? Import”. No sign-up.

Add Leap to Chrome — Free

Leap as an Arc alternative →