Finnish Toolkit — Y-tunnus & VAT

Name: Finnish Toolkit — Y-tunnus & VAT
Author: Otto.Maenpaa

Validate Finnish Business IDs (Y-tunnus) and VAT numbers, look up companies, and autofill business forms. Runs locally.

As of June 2026, Finnish Toolkit — Y-tunnus & VAT has — users in the Productivity category.

Otto.Maenpaa Productivity

Chrome Web Store ↗.crx

Users0%

—

Rating0%

—

— reviews

Reviews0%

—

Version

0.1.0

Manifest V3

History

1 snapshots

Tracking since Jun 18, 2026.

Not enough history yet for this metric — the chart fills in as we collect more snapshots.

View as table

Date	Users	Rating	Reviews	Version
Jun 18, 2026	—	—	—	0.1.0
Now	—	—	—	0.1.0

Permissions & access

Permissions: storage
Host access: https://avoindata.prh.fi/*, https://api.polar.sh/*, https://ph.vahtikone.fi/*

Screenshots

Finnish Toolkit — Y-tunnus & VAT screenshot 1

About

Finnish Toolkit speeds up everyday Finnish business admin. Validate a Y-tunnus (Business ID) instantly with the official checksum, convert it to a VAT number, and autofill business details into forms.

• Y-tunnus validation (official PRH algorithm)
• VAT-number conversion and checking
• One-click business lookup and form autofill

Validation runs locally and instantly. Free for validation; an upgrade unlocks live PRH company lookup and bulk checks. Made in Finland for Finnish businesses, bookkeepers, and anyone filling in company forms.

Technical

Version: 0.1.0
Manifest: V3
Size: 25.75KiB
Min Chrome: 88
Languages: 1
Featured: No

Metadata

ID: jaohjnchaiphphkmoefeebfgjbehkcjh
Developer ID: u1ff38ab1e66cb1037316d155a1368045
Developer Email: [email protected]
Created: Jun 17, 2026
Last Updated (Store): Jun 17, 2026
Last Scraped: Jun 18, 2026
Website: —
Support URL: —
Privacy Policy: https://boohi.github.io/nordkit-legal/

Data sourced from the Chrome Web Store · last verified Jun 18, 2026.