Logged-in invoice feature

Invoice generator with signature support for logged-in users who need a signed PDF.

Free Invoice Kit lets signed-in users draw one default signature or upload an image, save it to the account, and place a frozen copy on every invoice that needs it. Guests can still build invoices, but signature saving stays behind sign-in.

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Why it is account-only

One saved signature is easier to reuse than a pile of local copies.

Draw once, name it once, and keep using it on future invoices.

The invoice stores a frozen snapshot, so old PDFs do not drift when you update it.

The same flow works on desktop and mobile without leaving the builder.

Feature set

Built for the last step before you send the invoice.

Draw it in the browser

Open a popup canvas, draw with a mouse, trackpad, stylus, or finger, and save the version you want to reuse.

Upload a clean image

If you already have a signature file, upload it from your device and make that the default in your account.

Keep one default signature

Logged-in users get one reusable signature profile, not a pile of duplicate drafts or extra settings to manage.

Freeze it on each invoice

Every saved invoice keeps its own signature snapshot, so older PDFs do not change when you redraw or replace the default.

The workflow

Draw it, save it, and keep the invoice history stable.

The feature is intentionally narrow. It gives logged-in users one default signature and preserves the exact version used on each invoice instead of changing historical files later.

Good fit for

Freelancers who sign invoices regularly and want a clean reusable signature.

Small businesses that want a signed PDF without adding another billing system.

People who already send invoices in chat and need the PDF to look finished.

How it works

Four short steps, no extra workflow detour.

Step 1

The signature block appears for logged-in users inside the invoice workspace. Guests can still create invoices, but signature saving is account-only.

Step 2

Draw or upload the signature

Use the canvas popup to draw a signature or upload an existing image from your device.

Step 3

Save one default for your account

Name it, save it once, and reuse it on future invoices without repeating the setup on every bill.

Step 4

Generate the PDF with a frozen snapshot

The invoice PDF uses the exact signature attached at save time, so the historical invoice stays unchanged.

FAQ

Questions people ask before they switch on signatures

Is the signature feature available without an account?

No. Signature saving is for logged-in users only. The invoice builder still works for guests, but the signature block is account-only.

Can I redraw or replace my signature later?

Yes. You can replace the saved signature with a new drawing or a new uploaded image whenever you need to update it.

Will old invoices change if I update my default signature?

No. Each invoice stores a frozen signature snapshot, so the PDF keeps the version that was used when that invoice was created.

Can I use a signature image from my phone or desktop?

Yes. You can draw a new signature in the popup canvas or upload an image file from your local device.

Related Guides

Other pages that explain the same workflow

How To Add A Signature To An Invoice

Read the step-by-step guide that explains the feature and the frozen snapshot behavior.

Open page

Free Invoice Maker For Freelancers

See the fastest no-signup invoicing flow for solo operators and service businesses.

Open page

Send Invoice On WhatsApp

Combine a finished PDF invoice with chat-first delivery when the client is already waiting.

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