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UTF-16 Code Unit Inspector

Inspect JavaScript UTF-16 code units, escape sequences and paired or unpaired surrogate status.

Browser processingNo tool account neededTXT · CSV · JSON exports

1Start with your input
2Adjust the options
3Review & download

1Prepare & customize

Text to inspect

Up to 5,000 UTF-16 units. Each unit gets its own row; grapheme segmentation is not performed. Results are generated in a background worker with a 15-second limit.

Open input or save a project

Open UTF-8 text in the first inputOpen this tool’s saved project

A project contains both input fields and options. Nothing is saved automatically. Keep private inputs out of files you share.

2Review your result

Ready. Try the example.

Text result & clipboard

Full generated text

Read the result notes before using exported files. SVG paper sizes require actual-size printing; browser fit-to-page can change scale. HTML downloads are self-contained reports, not live projects.

How to use UTF-16 Code Unit Inspector

Load the example to see the expected input format: Text to inspect.
Review the source before processing; no extra settings are required. Open a UTF-8 file if that is easier than pasting.
Choose Create result. Review the table, preview and tool-specific notes; changing an input clears the previous result.
Download the full result or a printable report. Save a project to reopen these inputs and settings later.

What this tool focuses on

Inspect JavaScript UTF-16 code units, escape sequences and paired or unpaired surrogate status. Up to 5,000 UTF-16 units. Each unit gets its own row; grapheme segmentation is not performed.

The displayed table shows up to 100 rows at a time; exports include all supported rows. Parsed JSON uses JavaScript numeric precision, so exact large identifiers should be strings. No input is fetched from a URL or uploaded for this processing. Site advertising and analytics are described in the privacy information.

Using UTF-16 Code Unit Inspector

Inspect JavaScript UTF-16 code units, escape sequences and paired or unpaired surrogate status.

Start with the example or enter text to inspect.
Create the result and inspect its rows.
Review tool-specific notes, then download a report or save your project.

Example

Hello 👋 café

Questions & answers

What does this tool do?

Inspect JavaScript UTF-16 code units, escape sequences and paired or unpaired surrogate status.

What input should I provide?

Text to inspect. The built-in example demonstrates the expected syntax.

What limits should I know?

Up to 5,000 UTF-16 units. Each unit gets its own row; grapheme segmentation is not performed. Processing stops after 15 seconds and output is capped at 8 million characters. Result notes describe the algorithm and assumptions.

Can I save or print the result?

Yes. Download TXT, CSV, JSON, or a self-contained printable HTML report. A separate project JSON preserves input and settings for this tool.

Is anything uploaded or saved automatically?

No processing upload or automatic draft saving is performed. Downloads can contain your input or derived data. Site advertising and analytics are covered by the privacy information.