The private key and password never leave your device — signing is processed locally. Plus: 2FA (TOTP), encryption, a document event history and full signature validation (certificate chain, OCSP/CRL, TSP).

Features

Everything for working with documents — from creation to signing

Q: Which keys and signature formats are supported?

File key, Diia.Signature and Smart ID (Privat24). The DSTU 4145 standard, plus ECDSA and RSA; CAdES-BES/T formats, multi-signature (co-signing) and timestamps (TSP).

Q: Can I send a document for signature to someone without an account?

Yes. External signing via a link lets a counterparty sign without registering. There is also batch signing of several documents at once.

Q: Can I edit documents online?

Yes. The built-in Office editor (docx/xlsx/pptx) runs right in the browser; a canonical PDF is generated automatically, and edits are available until the document is signed.

Q: Is there an API and webhooks for integrations?

Yes. The REST API is available in the base plan already, with webhooks on document events and real-time events over WebSocket.

A full-cycle platform: creation, approval, QES signing, exchange with counterparties, storage and AI. Complex inside — simple outside.

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QES signing in the browserDSTU 4145 · state-certifiedNo plugins or installsData in Ukrainian jurisdictionFree to start

Creation & templates

Documents from scratch or from templates with variables; any Office format automatically becomes a PDF.

✓Template editor with variables and auto-fill
✓A library of the company's standard documents
✓Office → PDF conversion, PNG page previews
✓Editing the source until it's signed

Online Office editor

Edit office documents right in the browser — no software to install (Collabora engine).

✓Edit docx / xlsx / pptx in the browser
✓A canonical PDF is generated automatically
✓Edits up until the document is signed

QES signing in the browser

Sign documents right in the browser — no plugins or installs. Your key and password stay on your device.

✓File key, Diia.Signature or Smart ID (Privat24)
✓Log in to the service with the same key — no password
✓DSTU 4145, ECDSA, RSA; CAdES-BES/T formats
✓Multi-signature (co-signing), timestamps (TSP)
✓No plugins or extensions — right on the page

External & batch signing

Send for signature even to those without an account, and sign several documents at once.

✓External signing via a link (no account)
✓Batch signing of multiple documents
✓Server signing

Exchange with counterparties

Inbound and outbound documents, a counterparty directory and delivery statuses — in one window.

✓Send to a counterparty for signature
✓Counterparty directory and exchange history
✓Import of M.E.Doc documents
✓Annulment of a document by mutual consent

Teams & companies

Collaborate on documents with roles, invitations and discussion right in the document.

✓Companies, roles and member invitations
✓Document comments with real-time statuses
✓Shared access and document permissions

Storage & search

A reliable document archive with a flexible structure and full-text search.

✓Folders, tags, document statuses
✓Full-text search (FTS) over content
✓Trash and recovery of deleted items

Artificial intelligence in every step

The only document flow where AI truly works with documents: it writes, reads, analyzes, edits and fills. See the full overview on the AI page.

✓A document from a description — requisites read from passport and vehicle-doc photos
✓“Document essence”: parties, amounts, terms and pitfalls before signing
✓Paper document recognition, translation, version comparison
✓AI edits on command (incl. live in the editor) with highlighted changes
✓Smart templates: anonymization, auto-fill, client fills via a link
✓A new document based on several existing ones

Integrations & API

Embed document flow into your systems — the API is in the base plan already.

✓REST API with no hidden fees
✓Webhooks on document events
✓Real-time events over WebSocket

Security

Legally valid and technically reliable — all built in Ukraine.

✓2FA (TOTP) to protect the account
✓Document event history (audit)
✓Full signature validation: chain + OCSP/CRL + TSP

Frequently asked questions about features

The essentials on signing, security and integrations.

Do I need plugins or software to sign?+

No. The QES is formed right in your browser — nothing to install. Your key and password stay on your device.

Which keys and signature formats are supported?+

Can I send a document for signature to someone without an account?+

Can I edit documents online?+

Is there an API and webhooks for integrations?+

How secure is it?+