FnOLensJump between environments
From UAT to DEV to PROD in one click, on the same page, company and language. Or press Alt+Shift+H.
FnOLens compares D365 Finance & Operations environments and lists only what differs: dual-write maps down to each field mapping, parameter and setup forms, and records, even the one line that fails in one environment and works in the other.
And it shows what sits behind every page: point at any field to see its table, search by the label you see, hop between environments without losing your place. Read-only, in your browser.
FnOLens is being published on the Chrome Web Store and Microsoft Edge Add-ons; the install links open here very soon. 30-day Pro trial included. Just your email to start, no card. Read-only: it never changes data in D365.
Functional consultants, developers, architects and key users: everyone who asks "which table is this?" ten times a day.
FnOLens never writes to Dynamics 365. It reads, explains and exports.
The extension has no accounts, no tracking and no analytics. Your D365 data never leaves your browser.
Search 18,000+ tables, 220,000+ fields and 5,800 data entities as you type.
Everything works on the D365 page you already have open. See every feature with a short clip →
From UAT to DEV to PROD in one click, on the same page, company and language. Or press Alt+Shift+H.
Tables, fields, data entities, forms, menu items and enums. Type what you see on screen, like "customer group". Typos are fine.
Click ◎ Pick, then any field or button on the page. FnOLens shows the table and field, its type and enum values, relations, every form it appears on and the data entities that expose it.
Data sources, staging table, OData names and field-by-field mapping to tables, with string lengths and enum values.
Fields, relations, references, the forms and entities that use a table, and every button and calculated value on a form.
How many maps are running or stopped, search by name, see record and delete sync status, and export maps with their field mappings, directions and value maps to Excel.
Start with a 30-day Pro trial. Just your email, no card. The install links for Chrome and Edge open here very soon; you can buy a licence already.
For everyone
For one person · renews monthly, cancel anytime
For companies and partners · minimum 5 users · renews yearly
| Feature | Free | Pro | Team |
|---|---|---|---|
| Environment hop | ✓ | ✓ | ✓ |
| Search by name or label (result list) | ✓ | ✓ | ✓ |
| Table, field, entity, form and enum details | – | ✓ | ✓ |
| This page, find a field, highlight on page | – | ✓ | ✓ |
| ◎ Pick fields and buttons | – | ✓ | ✓ |
| Technical field names on the page | – | ✓ | ✓ |
| Table Browser, Open form, OData | – | ✓ | ✓ |
| Excel / CSV field lists, DMF Excel template | – | ✓ | ✓ |
| Dual-write maps and exports | – | ✓ | ✓ |
| Click trail | – | ✓ | ✓ |
| Your own metadata (custom models) | – | – | ✓ |
FnOLens Free (environment hop and search) costs nothing and includes a 30-day Pro trial. Pro is USD 2 a month or USD 19.99 a year as a subscription you can cancel any time, or USD 19.99 for one year paid once. Team is USD 39.99 per user a year, minimum 5 users, and adds your own metadata including custom models. See pricing.
No. FnOLens is read-only. It reads the page you are on and its own metadata, opens D365 pages in new tabs, and exports to files on your computer.
No. The extension has no analytics or tracking, and your D365 data stays in your browser. FnOLens sends only your email address when you start (and your licence key when you activate Pro). The only thing FnOLens reads from D365 (and its linked Dataverse) is the dual-write map list, and only when you open that view, with your own sign-in.
Google Chrome (from the Chrome Web Store) and Microsoft Edge (from Microsoft Edge Add-ons). Other Chromium browsers such as Brave can install it from the Chrome Web Store.
FnOLens includes Microsoft's standard models. With the Team plan you can load your own metadata, including your custom models and extensions.
Pro starts as a 30-day trial when you first open FnOLens and enter your email. Dual-write compare and Compare environments can be tried for 24 hours each, counted from their first use. After that, Free keeps working; Pro features need a licence key.
In FnOLens on the old computer, open Options → Licence → Remove key from this browser, then activate the key on the new one. Old computer already gone? Sign in on My licence with the email you bought with and remove it there, or email [email protected] and we will free it for you.
Sign in on My licence with the email you bought with to see it or have it emailed again. You can also email [email protected].
Chrome and Edge update FnOLens automatically, including new metadata when Microsoft releases a new D365 version.