Clean data.
Clearer work.
Convert, compare and prepare Excel, CSV, JSON and SQL data.
No installation. No account. Your files stay in your browser.
id,name 0012,Alex 0024,Sam
[ { "id": "0012", "name": "Alex" },
{ "id": "0024", "name": "Sam" } ]Batch image workflow
Resize photos with padding: worked example →
Start with a practical example
Excel to CSV
Extract saved values from an XLSX worksheet and download UTF-8 CSV.
Merge CSV files
Append CSV files with matching headers into one table.
Compare two CSV files
Find added, removed and changed records using a unique key column.
Find your next data tool
Batch image resizer and converter
Resize multiple photos, add padding, convert JPG, PNG or WebP and download a ZIP. Process files in your browser without uploading them.
Excel to CSV
Extract saved values from an XLSX worksheet and download UTF-8 CSV.
CSV to JSON
Convert CSV rows into a JSON array while preserving identifiers as strings.
CSV to SQL INSERT
Generate reviewable INSERT statements for PostgreSQL, MySQL or SQLite.
Remove duplicate CSV rows
Keep the first or last complete row for each key, in original source order.
Merge CSV files
Append CSV files with matching headers into one table.
SQL IN list generator
Turn one value per line into a quoted SQL IN list.
Compare two CSV files
Find added, removed and changed records using a unique key column.
CSV lookup and JOIN
Add matching lookup columns using a LEFT or INNER join.
Edit CSV columns
Select, reorder and rename columns without changing cell values.
JSON to CSV
Convert a flat array of JSON objects into a rectangular CSV table.
CSV to Excel
Create an XLSX workbook with text cells to preserve identifier values.
JSON formatter and validator
Validate JSON syntax, pretty-print it or remove unnecessary whitespace.
Transpose CSV
Swap rows and columns in a small table.
Split CSV into ZIP
Split data rows into smaller CSV files with a repeated header.
Remove duplicate text lines
Keep the first occurrence of each nonempty line.
Clean CSV whitespace
Trim surrounding cell whitespace and remove empty data rows.
CSV and TSV converter
Convert comma-separated and tab-separated tables with proper quoting.
CSV to Markdown table
Build a Markdown table with escaped cell contents.
Sort CSV rows
Sort one column as text or exact decimal values while keeping ties stable.
Filter CSV rows
Extract rows using one column and an exact or text-matching condition.
JSONL and JSON converter
Convert one JSON value per line to an array, or an array to JSONL.
Compare JSON structures
Find added, removed and changed values using JSON Pointer paths.