01
Paste or upload
CSV, TSV, JSON, or Excel. The file stays in this browser.
Ten CSV tools
CSV tools that stay on this device.
Transpose, fix encoding, dedupe leads, split columns, convert JSON, merge files, clean cells, split lists, reorder columns, and extract emails and phones.
CSV
name,email Ada Lovelace,ada@analytical.example Grace Hopper,grace.hopper@navy.example
JSON
[
{
"name": "Ada Lovelace",
"email": "ada@analytical.example"
},
{
"name": "Grace Hopper",
"email": "grace.hopper@navy.example"
}
]Tools
Each one runs in this browser.
- CSV Transposer01Turn each row into a column, including the header.
- Encoding fixer02Convert UTF-8 to ANSI, ANSI back to UTF-8, add an Excel BOM, or repair mojibake.
- CRM lead deduplicator03Remove duplicate leads by email, phone, name and company, or one column.
- Text and column splitter04Split one cell into columns on a comma, space, semicolon, pipe, or a custom mark.
- CSV to JSON / JSON to CSV05Convert CSV to JSON, or JSON back to CSV.
- CSV merger06Stack two files, or join them on a shared column.
- CSV data cleaner07Trim spaces, collapse gaps, and set capitalization.
- CSV list splitter08Split a list into smaller CSV files for bulk email.
- Column reorder and delete09Reorder columns and drop the ones you do not need.
- Email and phone extractor10Pull unique emails and phone numbers from pasted text or a table.
02
Set the options
Delimiter, join key, batch size, or which columns to keep.
03
Copy or download
The preview updates as you type. Then take the file with you.
Privacy
Every tool runs in this browser. Files are not uploaded.
There is no account. Closing the tab clears the file.
Excel files are read on this device. A paste from Excel is treated as tab-separated text.
Exported CSV prefixes cells that look like spreadsheet formulas, so Excel does not run them.