Your tabs. Your vault. Your device. A retro terminal vault for the tabs you want to keep.
CofreTabs is a Manifest V3 browser extension that turns the tab you are reading into a permanent, searchable entry in a private local vault. It is built for people who hoard “read later” tabs, research sessions and rabbit holes — without handing their browsing history to a bookmark service.
Everything lives in IndexedDB inside your browser profile. There is no backend, no account, no sync, no analytics and no remote code. CofreTabs never saves a page automatically: the slide-over panel shows exactly what will be saved, and nothing is written until you press SAVE THIS TAB.
Version 1.1.0 completes the original roadmap — Favorites, custom folders, a compact folder grid, light and dark themes and in-app update notifications — all verified by a 98-test automated suite that runs against the real storage and UI code.
Latest release: v1.1.0
♥ SUPPORT — PAY WHAT YOU WANTOfficial release — not in any browser store yet
CofreTabs is not distributed through a browser store yet — it is installed from this official GitHub release. Extract the ZIP and load the extracted folder as an unpacked extension (one-time developer mode). The release page shows the ZIP’s SHA-256 digest, and existing installs check the same GitHub releases feed for updates. All CofreTabs releases →
Chrome / Edge / Brave / Vivaldi / Opera · Unzip, then “Load unpacked” in chrome://extensions (developer mode).
Chrome / Edge / Brave / Vivaldi / Opera · Unzip, then “Load unpacked” in chrome://extensions (developer mode).
Chrome / Edge / Brave / Vivaldi / Opera · Unzip, then “Load unpacked” in chrome://extensions (developer mode).
CofreTabs is free — every download, every store listing, forever, for everyone. Nothing is behind a paywall and paying unlocks no extra features: if the extension saves you time, you can support the studio with a pay-what-you-want donation — 1, 2.99, 5 or 10 — or simply keep it free and star the repository instead.
A right-side slide-over shows the page title, host, automatic folder and duplicate status before you commit — nothing is written until you press SAVE THIS TAB
Progress is tied to the real database write: double-clicks are rejected, and success is shown only after IndexedDB confirms the write — failures are shown as failures
A bundled ICANN Public Suffix List (6,949 rules) files pages by registrable domain — news.bbc.co.uk goes under BBC, not co.uk — with www, subdomains, IP literals and malformed URLs handled
Search across title, URL, hostname, folder and notes; sort by newest, oldest, title, domain or folder; filter by folder
Heart any saved tab to collect it in the built-in Favorites view, in both the library and the panel — favoriting is a non-destructive tag, the tab stays in its folder
Create, rename and delete your own folders from the library sidebar — deleting a folder moves its tabs to Trash instead of destroying them
An inline MOVE selector on every row re-files a saved tab immediately, preserving title, URL, favicon and notes
The panel shows up to nine folders in a 3×3 grid with icons, names and counts; accessible up/down controls step one row at a time when you have more
Move entries to Trash, restore them, or permanently delete them from Trash with confirmation — restored tabs return to their original folder when it still exists, otherwise they are re-filed by domain
Add context to a tab, fix a noisy page title, or add a URL manually when a page cannot be injected
Export active and trashed entries with a versioned schema; import supports merge and replace, validates the entire file before writing, and reports duplicate/invalid counts
A theme switch in the library sidebar, applied to the library and the injected panel, persisted across launches, defaulting to your system preference
The library checks the official GitHub releases feed at most once every 12 hours and shows a dismissible banner when a newer version exists — nothing is downloaded or installed without you
On browser-internal pages (chrome://, the Web Store, PDF viewers) Chromium blocks injection — CofreTabs opens the library with an explanation and a manual-add option instead
Escape closes the panel or dialogs, focus is moved in and restored on close, status uses polite live regions, and animations respect prefers-reduced-motion
Only activeTab and scripting — no tabs, history, bookmarks, host permissions or background network access
Deliberately absent today — JSON export/import is the supported way to move a vault manually
Click the toolbar icon and a slide-over panel shows the page title, host, the automatic folder it will be filed under, and a warning if the exact URL is already in your vault. The progress animation is tied to the real database write — a failed save is reported as a failure, never as success.
The full-page library is your vault: every saved tab with its folder, note and time. Website folders are created automatically from the real domain using a bundled ICANN Public Suffix List, and you can create your own folders, rename them, and move tabs between them with the inline MOVE selector.
Heart any saved tab to collect it in the built-in Favorites view, in both the library and the panel. Favoriting never moves or duplicates the tab — it stays in its folder and is only tagged, and the Favorites collection itself can’t be deleted.
Search across title, URL, hostname, folder and notes; sort by newest, oldest, title, domain or folder; and filter by any folder or the Trash. Results update as you type, so a vault with hundreds of entries stays navigable.
Moving a tab to Trash hides it without destroying it. From the Trash you can restore entries — they return to their original folder when it still exists, otherwise they are re-filed by domain — or delete them permanently with confirmation. Deleting a folder also moves its tabs to Trash instead of wiping them.
Export the whole vault — active and trashed entries, folders, notes and favorites — as plain JSON. Import validates the entire file before anything is written, then merges into your current vault or replaces it, reporting duplicate and invalid counts. Backups never leave your machine unless you move the file yourself.
The whole interface — panel and library — comes in dark and light themes. The default follows your system preference until you choose, and the choice persists across launches. Both themes keep the phosphor-green terminal identity the vault was designed around.
Real captures of the extension, grouped by build — every slide carries the exact version it represents. Browse with Previous/Next, arrow keys or swipe; click any screenshot to enlarge it. Provenance for each file is recorded in public/screenshots/cofretabs-MANIFEST.md.
Captured 2026-10-26 from the packaged v1.1.0 build (tag v1.1.0, commit 729c500): the real library page with real IndexedDB (three chrome.* APIs stubbed) and the real, unmodified panel script saving through the real vault write path — the same documented method the repository uses for its own screenshots. Demo fixture data only.
Slide-over panel over an article: detected page, SAVE THIS TAB, and the 3×3 folder grid with Favorites and recent saved tabs.
After a real save: the success state appears only once IndexedDB confirms the write, with the duplicate notice and updated vault count.
The same panel in the light theme — an already-saved page is flagged as a duplicate before you commit.
Favorites, custom folders, MOVE controls, notes, the theme switch and the Trash count in the dark theme.
The identical vault in the light theme — the switch persists across launches and defaults to your system preference.
Heart any saved tab to collect it here — favoriting is a tag, so the tab stays in its original folder and is never duplicated.
Search matches title, URL, hostname, folder and notes — three hits for “vault” across different fields.
Restore a trashed tab to its folder, delete it forever, or empty the Trash — nothing disappears by accident.
The import dialog validates the whole file first and previews it before you choose merge or replace mode.
Scroll, swipe or use ← → keys · click any screenshot to enlarge
Copied unchanged from the CofreTabs repository (docs/screenshots/): captured in headless Chrome via CDP Extensions.loadUnpacked against the v1.0.0 build.
The original review-before-save state — title, host and automatic folder shown before anything is written.
The panel after a save acknowledgement, with the updated vault beneath it.
The original full-page library with demo tabs grouped by folder.
Scroll, swipe or use ← → keys · click any screenshot to enlarge
CofreTabs v1.1.0 was released on 25 October 2026 and is free everywhere — the download links on this page serve that exact release, and future store listings will be free too. The source, tests (98/98 passing at release), build pipeline and release packaging are complete. The Chrome Web Store is a planned distribution channel — store listing copy is prepared in the repository, but the extension has not been submitted or published to any browser store yet. Until then, installation is from the GitHub release via “Load unpacked”. Development is documented on the dev log; donations are optional and never unlock features.
CofreTabs is actively developed at Madwolf Studios. Development progress is documented through the Dev Log — new features, improvements, technical decisions and lessons learned.