Quote / Estimate Builder

Build a quote, send it, and turn the accepted one into an invoice with one click — no account, no upload, works offline.

A local, single-file quote generator for freelancers and small businesses: fill in your business info, a client, and a few line items to build a clean, printable quote. Once the client says yes, click one button and the same document becomes an invoice — new invoice number, accepted date stamped, ready to print or save as PDF. Everything runs in your browser; nothing is ever uploaded, and your business profile and recent clients are remembered locally so you're not retyping them every time. One-time purchase, works offline forever.

What it does

What it does: A two-pane editor — form on the left, a live styled document on the right that updates as you type. Enter your business details once (remembered for next time), add a client (or pick one from your last six), add line items with quantity and unit price, set a tax rate and optional notes, and the preview renders a proper quote: header, bill-to block, itemized table, subtotal/tax/total, and a signature line. Set an optional expiry date — past it, a clear warning banner appears both in the editor and on the printed document itself. When the client accepts, one button flips the whole document into an invoice: a new sequential invoice number is generated, the accepted date is stamped, the signature line is replaced with a "converted from quote Q-0001" note, and the quote number is preserved for reference. Printing uses the browser's own print-to-PDF — no PDF library, no server round-trip.

Who it's for: A freelancer or small-business owner who quotes jobs before starting them and wants the accepted quote to become the invoice without retyping anything — the clearest fit is a photographer quoting a wedding or event package, but the same shape covers a contractor, a consultant, or anyone who sends a price before doing the work.

Example scenario: A wedding photographer gets an inquiry, opens the tool, and in two minutes has a quote for full-day coverage, a second shooter, and a printed album — total $3,472 including tax. She emails the PDF. The couple books. She reopens the file, clicks "Mark accepted → convert to invoice," and the same document is now Invoice INV-0001, ready to send for the deposit.

What it explicitly does not do:

• Does not send anything anywhere. There is no email delivery, no client portal, and no way for the tool itself to know a client "accepted" a quote in any real sense — converting to an invoice is a local action you take after the client has told you yes some other way (email, a phone call, a signed print-out). This is a real, honest limitation of a single-file, no-backend tool: there is no shared state between the copy you sent the client and the copy sitting in your browser.
• Does not store documents in the cloud or sync between devices. Your draft, business profile, and recent-clients list live in this browser's localStorage on this one device only — a new browser, a new computer, or clearing site data starts fresh.
• Does not do real e-signatures, payment collection, or accounting (no ledger, no tax filing, no bank sync).
• Does not batch-generate multiple quotes at once — one document at a time, by design.
• Does not track a history of past quotes/invoices inside the tool. Each PDF you print is the record; the tool itself only ever holds the current in-progress document.

Features

• Live-updating quote/estimate document as you fill in the form — no separate "preview" step
• One click converts an accepted quote into an invoice: new sequential invoice number, accepted-date stamp, and a "converted from" note, without retyping any client or line-item data
• Optional expiry date with a clear warning banner, both in the editor and on the printed document, once it's passed
• Remembers your business profile and your last six clients locally, so repeat quotes take seconds
• Native print-to-PDF via the browser's own print dialog — no PDF library, no upload, no watermark
• Runs entirely offline in your browser — no network requests, no analytics, no account, verifiable by reading the page's own source

Browser support

Functional testing covered: empty state, a fully filled quote (business + client + three line items + tax + notes), the expiry-warning banner (both triggering it with a past date and clearing it), the quote → invoice conversion (new invoice number generated, accepted date stamped, conversion note shown), reverting an invoice back to a quote, starting a new document while keeping the saved business profile, dark mode, a 150-line-item performance stress test (rendered cleanly, no freeze), and a real generated PDF via print-to-PDF. All of this was run through each engine's actual rendering — not inferred from reading the code.

FAQ

Does my data get uploaded anywhere?
No. The entire tool is one static HTML file with no server component and no network calls. Your business profile, recent clients, and current draft are saved only in this browser's local storage on this device — nothing is sent anywhere, and you can confirm that yourself by reading the page's source or watching your network traffic.

How does quote-to-invoice actually work — does the client see it update too?
No, and it's important to be upfront about that: converting a quote to an invoice is a local action in your copy of the tool, not a shared, synced document. There's no way for this single-file tool to know a client clicked "accept" somewhere, because there's no server in the middle. In practice this means: send the quote, get a yes some other way (email, a call, a signature on the printed copy), then come back and click "Mark accepted → convert to invoice" yourself, and send the resulting invoice.

Does this work on my iPhone/iPad?
Almost certainly for viewing and light editing, since iOS Safari supports the same standard form and print APIs the tool relies on — but this has not been tested on a physical iOS device, so it isn't claimed as verified. The two-column layout does collapse to one column under 880px width in the CSS, which should suit a phone screen, but that's read from the code, not confirmed on real hardware.

Does this work offline?
Yes, completely, once the file is open. There's no CDN dependency, no font loaded from the internet, no API call.

Can I use this for client or commercial work?
Yes — personal and commercial use are both fine, including client deliverables.

Is there a subscription?
No. One-time purchase, yours to keep and reuse forever, for as many quotes and invoices as you want.

What happens to my data if I clear my browser or switch computers?
Your business profile, recent clients, and current draft live only in that browser's local storage — clearing site data, using a different browser, or moving to a new computer starts fresh. This is the honest tradeoff of a tool with no account and no cloud sync: nothing to leak, but also nothing to fall back on if you don't keep your own PDFs.