How to use
- Paste CSV or open a UTF-8 file; select the delimiter and header setting.
- Search, sort or choose columns in the table.
- Export the current filtered and sorted view as CSV or JSON.
CSV Viewer
Paste CSV or open a UTF-8 file, then view the table. Detect the delimiter automatically or select comma, semicolon, tab or pipe. Choose whether the first record contains column names.
Processing stays in your browser. DevToolsy does not receive the pasted data or selected file.
Input and processing
Search all columns, toggle visible columns and sort a column by clicking its header. Numeric comparison uses exact decimal arithmetic. The table shows 50 records per page; duplicate column names remain separate columns.
name,role,score
Ada,Developer,98
Lin,Reviewer,92
Maya,"Designer, UI",95{
"columns": [
"name",
"role",
"score"
],
"rows": [
[
"Ada",
"Developer",
"98"
],
[
"Lin",
"Reviewer",
"92"
],
[
"Maya",
"Designer, UI",
"95"
]
],
"delimiter": ","
}This example uses the default settings.
Result and limitations
Cells stay strings, including leading zeros and large IDs. CSV/JSON export uses the filtered rows, sort order and selected columns. CSV formula protection prefixes risky cells; JSON exports columns and rows as arrays.
Using the output
Export the current filtered and sorted view as CSV or JSON.
UTF-8 input up to 1 MiB, 50,000 data rows, 1,000 columns and 250,000 cells. The table displays 50 rows per page.
Frequently asked questions
How are CSV cells and column names interpreted?
Paste CSV or open a UTF-8 file, then view the table. Detect the delimiter automatically or select comma, semicolon, tab or pipe. Choose whether the first record contains column names.
How do search, sorting and column selection work?
Search all columns, toggle visible columns and sort a column by clicking its header. Numeric comparison uses exact decimal arithmetic. The table shows 50 records per page; duplicate column names remain separate columns.
What is included in exported files?
Cells stay strings, including leading zeros and large IDs. CSV/JSON export uses the filtered rows, sort order and selected columns. CSV formula protection prefixes risky cells; JSON exports columns and rows as arrays.
Is the input uploaded?
Processing stays in your browser. DevToolsy does not receive the pasted data or selected file.
Can I keep the result?
Export the current filtered and sorted view as CSV or JSON.