Does Char Count Unique upload my file or text to Tool-You servers?

No. Char Count Unique runs in this browser tab. Files stay on the device. Limit note: Unique and total counts. Empty fails.

Should I use UTF-8 Byte Length instead of Char Count Unique?

Use Char Count Unique when you need Unique character count. Use UTF-8 Byte Length when you need UTF-8 bytes, code points, and UTF-16 code units. They share a category (Developer) but not the same job.

Char Count Unique

Unique character count.

Counts unique characters and total length. Unlike UTF-8 Bytes this is character uniqueness. Unlike Count Lines this ignores newlines as lines. Empty fails.

What Char Count Unique does

Counts unique characters and total length. Unlike UTF-8 Bytes this is character uniqueness. Unlike Count Lines this ignores newlines as lines. Empty fails.

Char Count Unique sits in the Developer group on purpose. It is not UTF-8 Byte Length (UTF-8 bytes, code points, and UTF-16 code units.) and not Count Lines (Line count and non-empty lines.). Choose this page when you need Unique character count. If you stretch Char Count Unique into a neighbor’s job, the result will look wrong even though the site chrome looks the same.

How to use Char Count Unique

Keep this tab on Char Count Unique (/developer/char-count-unique). Pasting into the wrong Developer tool (for example UTF-8 Byte Length) changes the job.
Paste or type the input Char Count Unique expects. Path hint: developer · char count unique. Unique character count.
Apply the Char Count Unique action only. Count Lines is a different transform (Line count and non-empty lines.). Counts unique characters and total length. Unlike UTF-8 Bytes this is character uniqueness. Unlike Count Lines this ignores newlines as lines. Empty fails.
Copy the output of Char Count Unique if you need it elsewhere. Size/complexity still follows: Unique and total counts. Empty fails.
If the text job is actually UTF-8 bytes, code points, and UTF-16 code units., leave Char Count Unique and open UTF-8 Byte Length.

When not to use Char Count Unique

Skip Char Count Unique when a neighbor tool matches better — start with UTF-8 Byte Length or Count Lines — or when the description already warns the job will fail. In the tool’s own words: Counts unique characters and total length. Unlike UTF-8 Bytes this is character uniqueness. Unlike Count Lines this ignores newlines as lines. Empty fails.

Questions about Char Count Unique

What does Char Count Unique do that other Developer pages on this site do not?: Counts unique characters and total length. Unlike UTF-8 Bytes this is character uniqueness. Unlike Count Lines this ignores newlines as lines. Empty fails. Short version: Unique character count.
Does Char Count Unique upload my file or text to Tool-You servers?: No. Char Count Unique runs in this browser tab. Files stay on the device. Limit note: Unique and total counts. Empty fails.
Should I use UTF-8 Byte Length instead of Char Count Unique?: Use Char Count Unique when you need Unique character count. Use UTF-8 Byte Length when you need UTF-8 bytes, code points, and UTF-16 code units. They share a category (Developer) but not the same job.
What are the limits of Char Count Unique?: Unique and total counts. Empty fails. Also: Counts unique characters and total length. Unlike UTF-8 Bytes this is character uniqueness. Unlike Count Lines this ignores newlines as lines. Empty fails.