CSV Delimiter Auto-Detector & Re-formatter
CSV Delimiter Auto-Detector & Re-formatter: Detects semicolon delimiter, parses quoted values, and reformats into RFC 4180 comma-separated syntax.
About this csv delimiter auto-detector & re-formatter
Detects semicolon delimiter, parses quoted values, and reformats into RFC 4180 comma-separated syntax Applies Unicode-compliant text transformations and parsing directly in the browser tab without data leakage.
Text processing & transformation mechanics
Counts comma, semicolon, tab, and pipe outside simple quote toggles in the first row, selects the first highest count, parses with the local CSV parser, and returns JSON plus converted CSV. It is not comprehensive dialect detection or a full RFC 4180 validator.
Worked text manipulation example
Scenario: Convert one semicolon-delimited CSV text with the tool's first-row delimiter heuristic.
Sample input:
Processing: Counts comma, semicolon, tab, and pipe outside simple quote toggles in the first row; it chooses semicolon, parses rows, and defaults the output delimiter to comma.
Illustrative output:
Character encoding & string length boundaries
Source detection counts comma, semicolon, tab, and pipe outside simple quote pairs in the first row only; unusual quoting or a delimiter present only later may be misdetected. The target accepts only those four one-character delimiters (literal \t means tab). Review parsed rows and converted text before using them; this is not a full CSV dialect detector.
Text formatting and transformations in CSV Delimiter Auto-Detector & Re-formatter preserve character integrity. Check edge cases such as multi-line inputs and special characters before downstream use.
In-memory text processing boundary
String operations and Unicode manipulations in CSV Delimiter Auto-Detector & Re-formatter execute entirely in local browser memory without transmitting input text.
Unicode Consortium & text formatting standards
Unicode Consortium standard annexes (UAX) and character encoding specifications:
CSV Delimiter Auto-Detector & Re-formatter verification · Audit standards
How to use it
- Enter delimited text with a header or first row in the input box.
- Optionally enter comma, semicolon, pipe, or literal \t as the target delimiter; leave it empty to switch comma to semicolon or any other detected delimiter to comma.
- Run locally and read or copy JSON with detectedDelimiter, targetDelimiter, parsed rows, and converted text.
Frequently asked questions
How does CSV Delimiter Converter detect the source delimiter?+
It inspects only the first line and counts commas, semicolons, tabs, and vertical bars outside double quotes. The delimiter with the highest count wins; if counts are tied, the first candidate in this order wins: comma, semicolon, tab, then vertical bar.
What local example can I run?+
Paste two lines: `name;score` and then `Ada;10`. The result reports `detectedDelimiter: ";"` and `converted: "name,score\nAda,10"`.
How is the target delimiter chosen?+
A nonblank second input selects the target delimiter after trimming. Only comma, semicolon, tab or vertical bar is accepted; enter the literal \t to request a tab. A blank value changes a detected comma source to semicolon and every other detected source to comma. Any other target string produces an error.
Does it support every CSV dialect?+
No. Parsing uses the project's RFC4180 helper. Detection uses only the first row and does not infer locale, comments, malformed quotes, or a custom source delimiter.