Visual editor
A WYSIWYG canvas in millimeters with 11 element types. Each element can be shown or hidden based on conditions over the data.
About ZERTI
Everything that happens between designing a certificate and proving it's real
ZERTI is the cloud platform where an organization designs, distributes and enables verification by serial and QR of digital certificates in bulk. It offers a drag-and-drop visual template editor, participant import from Excel, blockchain integration and a public verification page that no one can fake.
11element types in the editor
15professional typefaces
3languages (ES · EN · PT)
QRpublic verification
A certificate's journey
From a blank template to a verifiable credential
Follow the path every certificate travels inside ZERTI. At each stage you have full control, without leaving the platform.
1
Design
You design the template in a visual editor
A canvas in millimeters where you place each element with precision. What you see is exactly what comes out in the PDF.
- Styled text, rich text, images, tables, QR, serial and buttons
- Letter, A4, legal, ID card or custom size, portrait or landscape
- One or multiple pages per certificate
- Preview of the real PDF before saving
2
Data
You load the participants
Import a spreadsheet or add them by hand. You define the fields you need and ZERTI turns them into variables for your template.
- Import from Excel or CSV with column mapping and duplicate control
- Text, date, number, email, selection, image and link fields
- Each field is inserted as {variable} and reordered by dragging
3
Issuance
You issue to thousands in one click
Generate every certificate at once. ZERTI produces each PDF on the fly, with its unique serial, and notifies every participant.
- Bulk issuance with a unique serial per certificate
- Automatic email with validation link and portal access
- Individual download or a ZIP of every certificate from your event
- Automatic backup of every certificate to your Google Drive, Dropbox, OneDrive, SharePoint, Amazon S3 or Backblaze B2
4
Verification
Anyone verifies it in seconds
The QR and the serial lead to a public verification page. No sign-up, no calls, no room for doubt.
- Public verification by QR or serial, in the visitor's language
- Shows only what's public — never email or ID document
- A record of every validation: source, device and language
5
The holder
The participant receives and uses their credential
Each person enters a portal with your branding, downloads their certificate and shares it where it matters.
- A "My certificates" portal with your logo, colors and your own domain
- An Add to LinkedIn button in one click
- They see how many times their certificate has been verified
6
Stage 6 · Trust
Verifiable by anyone: blockchain and Open Badges
Each certificate can carry two independent seals: one anchors it on the blockchain (proof of existence and that it wasn't altered) and the other turns it into a signed Open Badge 3.0 credential that anyone verifies without depending on ZERTI. No personal data on the chain.
- Proof of existence on blockchain (OpenTimestamps, free)
- Signed Open Badge 3.0 credential (1EdTech / W3C standard)
- Third-party verifiable: 1EdTech validator, CertLister and blockchain explorers
15typefaces with real PDF rendering
5customizable portal themes
8field types per participant
3native languages, Spanish · English · Portuguese
The platform from the inside
Every piece, built to operate for real
It's not a diploma generator. It's a complete issuance and verification system, with the tools an organization needs to work at scale.
PDF engine
Generates each PDF on the fly, never saving it to disk. Exact size, orientation, 15 typefaces and metadata with variables.
Participants at scale
Import from Excel, define custom fields, issue to everyone at once and export whenever you want. A global view of your whole account.
Public verification
A page anyone can check by QR or serial, in their language, showing only what's public. Every lookup is logged.
Your brand, your domain
A portal for your participants with 5 themes, your colors, fonts, logo and favicon. Publish it at certificates.yourdomain.com.
Multi-language and teams
The entire system in Spanish, English and Portuguese. Each client lives isolated from the rest, with its own quota and separate data.
For your users
A certificate portal with your brand
Every account includes a public page where your users check and download their certificates, and where anyone can validate one by its serial. With your identity, not ours.
With your identity
Your logo, favicon, colours and fonts. Five different designs, your own welcome message and a preview before publishing.
Your address and your language
Start at zerti.co/yourname and connect your own domain or subdomain whenever you want. Available in Spanish, English and Portuguese: each visitor sees theirs.
What your users can do
They log in with their email and see only their own: download the PDF as often as they need, share their verification link and update their details. Without writing to you.
What a verifier sees
With no sign-up, anyone types the serial or scans the QR and sees who the person is, what they earned, who issued it and when. If it was revoked or altered, it says so too.
Trust by design
Enterprise-grade security in every issuance
A certificate is only worth as much as its proof. That's why security isn't a checkbox, it's the foundation of how ZERTI is built.
Privacy first
Public verification never exposes the holder's email or ID document.
Protected PDF
Encryption, opening password and permissions configurable per template.
Full isolation
Each client and its data live apart; no one sees what isn't theirs.
Protected documents
PDFs with personal data are generated on the fly and never left on the server.
Protected access
Encrypted passwords, protection against repeated attacks and secure sessions.
Traceability
Every validation is logged with its source, device and language.
Issue your first verifiable certificate today
Create your free account and see in minutes how simple it is to certify with confidence.
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