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Set up your own letterhead & PDF branding in einzly

Your invoices are the face of your business. Every document your client receives shapes their impression of you — consciously or not. With einzly, you set up your PDF branding in just a few minutes: logo, accent colour, letterhead. After that, all documents look consistent and professional, without any manual adjustments each time.

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einzly Redaktion
Tax & Finance Editorial · einzly
6 min read
7 Mar 2026
Related topics
PDF brandingLetterheadInvoices

01Why professional branding matters

Imagine two invoices. The first: black text on white, no logo, generic sender. The second: your logo in the top left, your brand colour on headings and totals, your letterhead as the background. Which one looks more professional?

Professional branding on your documents builds trust, increases recognition, and signals to your client: this is someone who takes their business seriously. This applies not just to invoices, but also to quotes and payment reminders.

Research shows that documents with consistent branding are perceived as more trustworthy. Clients pay invoices faster when they look professional and can be clearly attributed.


02How to set up your branding

Setting up the complete PDF branding in einzly takes less than 5 minutes. Three steps — done.

Upload your logo & choose an accent colour

einzly branding settings: logo upload and accent colour picker with 13 colours

In the settings under 'Branding', upload your company logo (PNG, SVG, or JPG, max 2 MB). Below that, choose from 13 accent colours the one that matches your business. This colour is automatically applied to all documents — on headings, totals, and buttons.

Choose an accent colour that matches your logo. If your logo uses a blue tone, for example, select the matching blue accent colour for a cohesive look.

Upload your letterhead PDF

Letterhead upload with A4 preview and safe zone sliders for header and footer

Optionally, you can upload a letterhead as a PDF. This is the blank template with your company header and footer — einzly places the invoice content on top. Use the safe zone sliders to define how much space is reserved at the top (header) and bottom (footer) for your letterhead. einzly automatically positions the content in between.

Letterhead is optionalIf you don't upload a letterhead, einzly uses a clean default layout with your logo and accent colour. This already looks professional. The letterhead is an upgrade for businesses that want to replicate their existing print design digitally.

Check the preview

Finished invoice with logo, accent colour on title and total, and letterhead background

In the invoice preview, you can immediately see the result: your logo in the top left, your accent colour on the invoice title and totals, your letterhead as the background. Check if everything looks right — you can make changes in the settings at any time.



03What einzly applies automatically

Once you've set up your branding, einzly applies it consistently across all documents — without any manual intervention on each invoice.

  • Logo on all documents — Invoices, quotes, reminders, and credit notes display your logo in the top left.
  • Accent colour on headings & totals — The invoice title, table headers, and total amount appear in your chosen colour.
  • Letterhead overlay on all pages — If uploaded, your letterhead is placed as a background on every page. Exception: the QR payment page stays without letterhead, so the QR code can be reliably scanned.
  • White-label email sending — When you send an invoice by email, your client sees your logo and company name — not einzly.
  • Multilingual PDFs — Your branding stays the same whether you create the invoice in German, French, Italian, or English.
The online view of your invoices also uses your branding. When your client clicks the link in the email, they see your logo and colour — a consistently professional experience.


04Comparison: Without vs. with branding

CriterionWithout brandingWith einzly branding
Logo on invoiceNone or manually insertedAutomatic on all documents
ColoursBlack on whiteYour accent colour on titles & totals
LetterheadNot possible or print templatePDF upload with safe zones
ConsistencyVaries per documentUniform across all documents
Effort per documentManual adjustmentsZero — fully automatic
Client impressionGenericProfessional and recognisable

The difference is subtle but powerful. Clients who regularly receive branded documents associate your business with professionalism and reliability. And you save yourself the manual formatting on every single document.



05Further customisation options

PDF branding is just one part of customisation in einzly. If you have additional specific requirements — an extra field on the invoice, a special export, or an industry-specific adjustment — you can request it directly. More on this in the article Customise your accounting software.

Together with the automatic QR invoice and direct email sending, you get a consistently professional document workflow — from creation to payment.


einzly accepts PNG, SVG, and JPG. For the best quality, we recommend SVG or a high-resolution PNG with a transparent background. The maximum file size is 2 MB.
No, the letterhead is optional. Even without a letterhead, your documents look professional — with your logo and accent colour. The letterhead is an upgrade for businesses that want to replicate their existing print design digitally.
Yes, at any time. The new colour is applied to all new documents immediately. Documents that have already been created keep the colour they were created with.
No. The QR payment page deliberately has no letterhead background. This ensures the QR code can be reliably scanned by all banking apps.
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