Ed25519-signed QR codes

Signed QR CodesThat Prove Authenticity

Generate cryptographically signed QR codes for menus, parking, and payments — so people can verify the issuer and integrity before they open the link.

Free secure QR generator·Ed25519 signatures·Verify before click
9:41
QRalo

Cryptographic Signatures

Every QR code is cryptographically signed with Ed25519. Prove authenticity of your official QR codes.

Secured

Custom Branding

Replace the default logo with your own brand. Professional, circular rendering.

Business
✓ Custom
Free

Real-time Analytics

Track scans, locations, devices. Export data as CSV/JSON. Revoke QR codes instantly.

247

Active

99.8%

Uptime

15K

Scans

Cryptographic Signatures

Every QR code is cryptographically signed with Ed25519. Prove authenticity of your official QR codes.

Secured

Custom Branding

Replace the default logo with your own brand. Professional, circular rendering.

Business
✓ Custom
Free

Real-time Analytics

Track scans, locations, devices. Export data as CSV/JSON. Revoke QR codes instantly.

247

Active

99.8%

Uptime

15K

Scans

Ed25519

Cryptographic Signatures

<20ms

Verification Speed

Revoke

Instant if a code is compromised

Enterprise Interface

Enterprise Dashboard

Manage all your QR codes from an intuitive and powerful interface

Dashboard

Sophie Tuetin

Active

247

+12%

Scans

15.2K

+28%

Trust

99.8%

HIGH

Speed

18ms

FAST

Recent QR Codes

Restaurant Menu

342 scans

Active

Parking Level 2

128 scans

Active
Real Use Cases

In Real Situations

Discover how QRalo integrates perfectly into your environment

Restaurant

The Garden

Verified
MenuWine ListAllergens

342

Scans

+15%

Trend

Ed25519

Signed

P

Parking

Level 2 • Spot A15

Validated

Entry time

14:30

Rate

$2.5/h

Restaurants & Hotels

Track menu QR scans in real-time. Branded QR codes. Analytics on customer engagement.

8.2K

Monthly scans

+34%

Growth rate

Parking & Transport

Manage parking QR codes centrally. Track usage by location. Revoke tickets instantly.

247

Active spots

2.1M

Total tickets

Events & Marketing

White-label QR codes for campaigns. Track conversions. Export analytics to CSV/JSON.

12.4%

Conversion rate

52K

Campaigns tracked

Real-time analytics

Powerful insights

Visualize your QR codes performance in real-time

Total Scans

15.2K

+28%

Mar 3–9

MonTueWedThuFriSatSun

Top Geo

Paris

42% of traffic

Device

iOS

67% vs Android

Peak Hour

7 PM

2,341 scans/hour

How it works

Cryptographic proof
for the QR codes you issue

A normal QR code is just a URL. QRalo adds an Ed25519 signature so a verifier can check issuer and integrity before redirect.

1

Cryptographic signature

Every QRalo code is signed with Ed25519. If the payload is altered, verification fails.

ISSUER + INTEGRITY
2

Centralized management

Track codes from one dashboard. Expire or revoke anytime. Analytics on scans.

LIFECYCLE CONTROL
3

Public verification

Anyone can check a code at qralo.com/scan or via the verify redirect — no app install required.

BEFORE THEY CLICK

Ed25519

Signature algorithm

Verify

Before redirect

Revoke

From dashboard

AES

256-GCM key storage

Issue signed QR codes for the stickers you control

Transparent pricing

Start free, scale without limits

Starter

0€/month
  • 3 active QR codes
  • 100 scans per QR code
  • Ed25519 cryptographic signatures
  • Basic analytics dashboard
  • Custom logo in QR codes
  • Geolocation map of scans
  • Limited to 1 QR per minute
Start for free

Perfect for testing · No credit card

MOST POPULAR

Business

9,99€/month
  • Unlimited QR codes
  • Unlimited scans per QR
  • Custom logo in QR codes
  • Advanced analytics dashboard
  • Geolocation map of scans
  • Export data (CSV, JSON)
  • No rate limits
  • Priority email support

Cancel anytime · Card required

Enterprise

Custom
  • Everything in Business
  • Custom features development
  • Dedicated infrastructure
  • White-label solution
  • Dedicated support
  • Custom SLA & contracts
Contact sales

For large organizations

Frequently Asked Questions

General Questions

What makes QRalo different from other QR code generators?

QRalo uses Ed25519 cryptographic signatures to prove QR code authenticity. You get real-time analytics, custom branding, instant revocation, and a centralized dashboard to manage all your QR codes.

Do I need special equipment to use QRalo?

No. You generate QR codes through our web dashboard, then print or display them anywhere. Standard camera apps can scan them like any QR code.

Can I track who scans my QR codes?

You can see scan counts, timestamps, locations, and device types. IP addresses are hashed for GDPR compliance, so individual users remain anonymous.

What happens if someone copies my QR code?

Each QRalo QR code contains a cryptographic signature that proves it was issued by your organization. Anyone can copy the visual QR code, but they cannot forge or modify the signature without your private key. The integrity is verifiable.

Does QRalo stop all QR phishing on menus and parking?

No product can. For QRalo-issued codes that people verify, a swapped non-signed sticker fails verification or is clearly not yours. Guests who scan random unsigned stickers with a normal camera and skip verification are not covered. Optional URL lists only catch already-known malicious destinations.

How much does QRalo cost?

We offer a free Starter plan (3 active QR codes, 100 scans per QR code). Business plan is 9.99€/month with unlimited QR codes, unlimited scans, custom branding, and advanced analytics. Enterprise plans available on request.

Technical Questions

Why Ed25519 instead of RSA?

Ed25519 signatures are only 64 bytes (vs 256 bytes for RSA-2048), perfect for QR codes where space is limited. It's also faster and just as secure.

Are private keys really secure?

Private keys are encrypted with AES-256-GCM using a unique salt and Scrypt key derivation. Even with database access, keys cannot be decrypted without the master encryption key.

Can I revoke a QR code instantly?

Yes! From your dashboard, you can revoke any QR code immediately. Revoked QR codes will show as invalid when scanned and verified.

How do I verify a QR code is authentic?

All QRalo QR codes redirect to our verification page which automatically checks the cryptographic signature. The QR code URL encodes the signature and destination—verification happens transparently before redirecting to the final URL.

Can I export my analytics data?

Yes! Business and Enterprise plans include CSV and JSON export of all scan data, including timestamps, locations, and device information.

Security Questions

What if someone tries to modify my QR code?

Any modification to a QRalo QR code will invalidate the cryptographic signature. The verification will fail, alerting users that the QR code has been tampered with.

What if my private key is compromised?

Contact support immediately at security@qralo.com. We can revoke all affected QR codes and issue new cryptographic keys. Previously issued QR codes will become invalid.

Can I use QRalo for GDPR or regulated data?

We hash IP addresses and support data export/deletion requests. We store QR metadata, not the full content of destination pages. For HIPAA or other regulated use cases, consult your compliance officer — we do not claim sector-specific certification by default.

Do you offer API access?

API access is on the roadmap for Business and Enterprise. Email contact@qralo.com if you need early access for an integration.

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Signed QR

Ed25519 verified

#

Ed25519

Crypto standard

EU

Privacy

Hashed scan IPs

Z

Instant

Revocation

Start generating
secure QR codes

Create signed QR codes in minutes. Prove authenticity, revoke anytime — free plan included.

Free plan: 3 active QR codes · No credit card required