Electronic signature · Ecuador · Free
Sign and verify PDF documents for free with your .p12 certificate
Free for personal use, no sign-up and no servers: everything happens in your browser and your key never leaves your device.
- Free
- AGPL-3.0
- ETSI EN 319 142
- ARCOTEL TSL
- Mozilla Observatory A+
- SSL Labs A+
- LOPDP nativa
First time signing?
Easy Signing — with a voice that guides you
A free guided mode that walks you through step by step, with spoken instructions and large buttons. No rush, no jargon.
How it works
Three steps. Zero trust required.
You don’t need to trust us with your private key because we never ask for it. The entire process happens on your device.
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Upload your PDF and certificate
Pick the document to sign and your .p12 file. Everything stays in your browser.
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Place the stamp and sign
Choose where the visible stamp goes (with verification QR). Confirm with your password and the signature is applied locally.
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Download the signed PDF
Your PDF is signed with PAdES (ETSI international standard). Ready to send to SRI, bank, counterparty, or anyone.
Explore
Everything else, one click away.
Security, compatibility, use cases and more — each topic has its own page.
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Why it is safe
Designed so you don’t have to trust us: verifiable technical choices, not promises.
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Live statistics
Real service usage, live and with no personal tracking.
Sponsors
Who keeps this sustainable
firmar.ec is free and open source. Its development, security audits and infrastructure are sustained by organizations that value technological sovereignty.
Be the first brand to appear here
Your logo on the home page of Ecuador’s open electronic signature, seen by professionals, businesses and public bodies. Direct payment, no intermediaries.
Operated by
firmar.ec is an open-source non-profit project by IDK Manager, a software studio and technical services workshop in Quito, Ecuador. We build and maintain this tool as a contribution to the Ecuadorian digital ecosystem. No charges. No premium tier. No tracking.
Contact: GitHub Issues · Personal data: idkmanager.com · Security: Private advisory