Move your invoice records out of a subscription, without sending them anywhere

The rows below are typical — one line per invoice, semicolon-delimited because the export came from a European product, dates with dots, amounts with a comma:

Press Load a sample export above to put a machine-shaped version of this in the box and watch the mapping. The converter reads Rekening as the invoice number and Factuurdatum as the issue date because those headers match the patterns it knows; where a header is a language it does not recognise, the column lands on not used and you point it yourself in one click. Two invoices for the same client become one client record and two invoices, and betaald becomes a paid invoice. Its 12 hours at 85 multiply out to the 1.020,00 that was billed, so the line keeps its hours; where an export's total does not multiply out, the total wins, because that is what the client was charged, and the hours go into the time log marked as billed.

Usually yes, as a CSV. Nearly every invoicing product exports clients, invoices or time entries, because accountants ask for it; the button is often under Settings, Data or Reports rather than on the main screen. Free plans limit which exports you get and sometimes how many rows, but the client list and the invoice list are commonly available. Payment links, reminder schedules, bank feeds and message history do not export, because those are features of the service rather than your records.

No. There is no network code on this page. Your file is read by the browser's own file reader, the work happens in that page's memory, and the output is handed back as a download. It does not store to local storage either, so closing the tab leaves nothing behind. Check it yourself in the Network tab, or load the page once and then switch off your internet — it keeps working.

None by name. The header row is read, matched against known patterns, and shown to you as an editable mapping. It understands client, customer, company, account and billed to; date, issued, invoice date and factuurdatum; hours, quantity and duration; amount, total and bedrag; plus tax, VAT, discount, currency, status, due date and description. Minimum viable: a client name for the client list, a description or hours for time entries, or an invoice number with a line description for invoices.

Totals are recalculated from the lines rather than copied, because that is how the receiving app works. Rounding differences, percentage discounts and fees that never appeared in the export all show up as a cent or two. Compare one invoice against the PDF you actually sent before you start chasing anybody for the difference. The one that can be more than a cent is tax: a header row cannot tell you whether the money column was net or gross, and the app adds tax on top of the lines. If your export was VAT-inclusive, set the tax on those invoices to 0 after restoring, or the totals come out high by exactly that rate. The converter says so on screen whenever your file carries both an amount and a tax percentage.

Open the tracker, go to Settings, press Restore backup, pick the JSON. Records appear as clients, time entries and invoices, and numbering continues from the highest number found. Restoring replaces what was in that browser, so back up anything already there first.

Not live. Each browser holds its own copy and there is no merge, so pick one machine as the book of record. If more than one person invoices the same clients at the same time, a local file is the wrong shape of tool and a shared system is the honest answer.