How do I use the npm Package Name Validator?

Paste your npm input on the left and click Validate — results appear instantly on the right. Click "Try Sample" to load an example that demonstrates what the npm Package Name Validator does. Copy the output with the button above the panel, or download it as a file with the icon next to it. Related keywords: npm, package, name. If you're looking for a specific variant, check the Related tools strip below.

What can I use the npm Package Name Validator for?

Quick npm transformations during development Debugging production payloads without leaving the browser Generating sample data for tests, demos, and documentation Sharing reproducible tool output with teammates

Anything interesting to know about npm Package Name Validator?

JavaScript was written by Brendan Eich in 10 days in May 1995. The syntax was intentionally made to look like Java.

npm Package Name Validator

DevTools Surf

Example: npm Package Name Validator

A worked example, rendered from real sample data. Sign in to run the tool on your own input.

Input

@my-org/awesome-thing

Output

Name: @my-org/awesome-thing
Status: VALID — publishable as a new package
Scope: @my-org
Length: 21 / 214

Checklist:
✓ Not empty
✓ At most 214 characters — 21 / 214
✓ All lowercase
✓ Does not start with . or _
✓ No spaces or ~ ' ! ( ) *
✓ Only URL-safe characters
✓ Not a Node.js core module
✓ Not a reserved name
✓ Scope format @scope/name — @my-org

No warnings — looks great.
Install: npm install @my-org/awesome-thing

About npm Package Name Validator

npm Package Name Validator preview - JavaScript tool

Check whether a name passes npm's publish rules (length, casing, reserved prefixes). Part of the DevTools Surf developer suite. Browse more tools in the JavaScript collection.

Use Cases

Quick npm transformations during development
Debugging production payloads without leaving the browser
Generating sample data for tests, demos, and documentation
Sharing reproducible tool output with teammates

Tips

Paste your npm input on the left and click Validate — results appear instantly on the right.
Click "Try Sample" to load an example that demonstrates what the npm Package Name Validator does.
Copy the output with the button above the panel, or download it as a file with the icon next to it.
Related keywords: npm, package, name. If you're looking for a specific variant, check the Related tools strip below.

Fun Facts

JavaScript was written by Brendan Eich in 10 days in May 1995. The syntax was intentionally made to look like Java.
JavaScript has nothing to do with Java — Netscape named it JavaScript as a marketing strategy to ride the Java hype of the mid-1990s.
The ECMAScript specification is updated annually since 2015. Before that, ES3 (1999) to ES5 (2009) was a 10-year gap caused by the abandoned ES4 proposal.

FAQ

How do I use the npm Package Name Validator?: Paste your npm input on the left and click Validate — results appear instantly on the right. Click "Try Sample" to load an example that demonstrates what the npm Package Name Validator does. Copy the output with the button above the panel, or download it as a file with the icon next to it. Related keywords: npm, package, name. If you're looking for a specific variant, check the Related tools strip below.
What can I use the npm Package Name Validator for?: Quick npm transformations during development Debugging production payloads without leaving the browser Generating sample data for tests, demos, and documentation Sharing reproducible tool output with teammates
Anything interesting to know about npm Package Name Validator?: JavaScript was written by Brendan Eich in 10 days in May 1995. The syntax was intentionally made to look like Java.

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