Card Spend Tracker

Saved cards

Payment autofill (details restore when you sign in)

Tap a card to edit vault details. Card network is detected automatically from the number. Works on same-page checkout forms — not Stripe/PayPal iframes. When you are signed in, full card numbers restore after a reinstall.

Check / bank accounts

Full routing and account numbers restore on a new browser when you sign in. Last 4 digits also show on the dashboard.

Billing profiles

Reusable billing addresses for checkout autofill. Saved to your account when signed in, so they restore after a reinstall.

Label

Full name

Phone

Address

City

State

ZIP

Account & sync

Advanced: sign in with API token

API token

Checkout

Show log-payment popup on checkout pages Auto-log when payment is confirmed (processor API or success page) Block Pay until payment is logged (same-page checkout only)

When blocking is on, log the payment in the panel first — the site's Pay button stays disabled until then. Does not apply inside Stripe/PayPal iframes or wallet payments.

Default currency

Screenshot OCR

Verify checkout amounts locally before logging.

Use OCR to verify amounts

Screenshots

Enable checkout screenshots Capture while paying Capture on success page Capture on decline / cancel

JPEG quality 60

Site rules

Last card or bank used on each site is remembered and pre-selected next time.

My vendors

Private merchant labels for websites you pay on. Only you see these — they auto-fill on matching sites next time. Edit a name here or in the checkout prompt; remove to clear the auto-fill.

Custom payment URLs

Add URL patterns for custom payment endpoints.

Autofill debug log

Log autofill attempts (local only — no PAN/CVV)

When anyone clicks a saved card on a checkout page, each field match/skip is recorded locally here and uploaded (signed-in) so admins can review every employee’s attempts on the dashboard. Signed in as: not signed in. Download saves cst-autofill-debug-YYYY-MM-DD.json to your Downloads folder.

No autofill attempts logged yet.

Pinned payment pages

Pages you marked with “Always show on this page”. The log panel opens on every visit. Saved to your account when signed in, so they restore after a reinstall. Pinning a page removes it from the dismissed list (and vice versa).

Dismissed “not a payment page”

Pages you marked as not payment. Saved to your account when signed in, so they restore after a reinstall and the prompt stays off on those URLs. Remove an entry to allow checkout detection again.

Danger zone

Erase all local extension data. Cannot be undone.