dev-tool-x

Whitespace Visualizer

Reveal hidden whitespace characters — spaces, tabs, non-breaking spaces, trailing spaces, and zero-width characters — with colour-coded visual markers.

·Space→TabNBSPNBSP·TrailingZWSZero-width
Lines
6
Spaces
19
Tabs
2
NBSP
1
Trailing lines
2
Zero-width
1

Input

Visualized

1function·hello(·name·)·{
2→ console.log(·'Hi·'·+·name·);→
3}
4​
5hello(·'world'·);···
6ZWSInvisible·zero-width·space·above·and·NBSPNBSPhere.

About Whitespace Visualizer

Whitespace Visualizer is a free online developer tool for developers who need a fast, reliable way to work with Whitespace data without installing software or sending data to an external server. Paste your input, run the tool in your browser tab, and copy or download the result. Everything runs locally, so sensitive payloads, credentials, and internal data stay on your machine throughout the workflow.

Common uses

  • Clean up and transform developer data during debugging, review, and documentation work.
  • Paste input, run the tool locally in the browser, and copy the result without any server round-trip.
  • Use the output directly in tests, API clients, config files, and shared technical examples.
  • Avoid switching to a separate desktop application for a quick one-off transformation.

Related tools

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FAQ

What does Whitespace Visualizer do?

Whitespace Visualizer helps you reveal hidden whitespace characters — spaces, tabs, non-breaking spaces, trailing spaces, and zero-width characters — with colour-coded visual markers. It runs entirely in your browser, so your data stays local and results appear instantly without any server round-trip.

What kind of input does Whitespace Visualizer accept?

You can paste text directly into the input area or upload a file. The tool processes the content on the client side and displays the result immediately. There are no file-size limits imposed by the tool itself.

Is Whitespace Visualizer free to use?

Yes — Whitespace Visualizer is completely free and requires no sign-up or account. There are no usage limits for standard developer tool tasks.

Does Whitespace Visualizer send my data to a server?

No. Whitespace Visualizer runs entirely in your browser using JavaScript. Text you paste and files you upload never leave your machine, so it is safe to use with sensitive payloads, API tokens, and internal configuration data.