CSV Editor (Preview & Remove Columns) Local processing
Українська
English 日本語 ລາວ Монгол Oʻzbekcha Тоҷикӣ Кыргызча Қазақша Azərbaycan Հայերեն ქართული العربية Български বাংলা čeština Dansk Deutsch Ελληνικά Español Eesti Suomi Français हिन्दी ગુજરાતી ಕನ್ನಡ मराठी മലയാളം Srpski Slovenčina Slovenščina Kiswahili Hrvatski Magyar Indonesia Italiano 한국어 Lietuvių Latviešu Nederlands Norsk Svenska Polski Português Română Русский Українська Беларуская Shqip اردو தமிழ் తెలుగు Türkçe ภาษาไทย Tiếng Việt 简体中文 繁體中文 עברית ខ្មែរ Melayu မြန်မာ ਪੰਜਾਬੀ සිංහල Tagalog नेपाली فارسی
Local processing

CSV Editor (Preview & Remove Columns)

Preview CSV before editing. Choose columns to keep, delete the rest, split one column into many, or merge several columns into one — all in your browser.

Preview and pick columns instantly
Delete columns / reorder / split / merge
No uploads — processed locally
Download a new CSV (original stays intact)

CSV preview and CSV edit stay local. Useful for CSV column delete, CSV column split, CSV column merge, and CSV column selection.

Voltage Drop Calculator

CSV preview + CSV edit in one place: delete columns, choose CSV columns, reorder, split columns, and merge columns before downloading.

What this CSV editor can do

CSV preview (first N rows)

Check the CSV preview first. Auto-detect delimiters (comma/tab/semicolon/pipe) and switch manually if needed.

Select columns & remove the rest

Keep only the columns you need to reduce mistakes. Verify column names and counts before export.

Reorder columns (advanced)

Drag to change column order — this is not value sorting.

Split a column

Split one column into multiple columns using a delimiter or regex. Control max parts and how unsplittable rows are handled.

Merge columns

Combine multiple columns into one with a chosen separator and empty-cell handling.

Load CSV

Local only
Drop your CSV here
Drag & drop a file or choose one
File name
Not loaded
File size
—
Import settings

Перегляд

Preview shows only the first N rows.
—

Columns to keep

—
Use the column search above
Advanced: reorder columns

Drag to change column order (not sorting by value).

    Split column

    Merge columns

    Download edited CSV

    Local-only download
    Original file stays unchanged.

    UI & settings

    Import

    • Delimiter: Auto / comma / tab / semicolon / pipe / custom
    • Encoding: Auto / UTF-8 / Shift_JIS
    • Header row: treat first row as column names

    Перегляд

    • Rows to show: 50 / 100 / 200
    • Search: column names and values

    Column operations

    • Keep columns only (delete the rest)
    • Show selected columns only
    • Advanced: drag to reorder columns

    Split

    • Target column (dropdown)
    • Split by delimiter or regex
    • Max split count and handling for unsplittable rows
    • Auto-generated column names (editable)

    Merge

    • Select multiple columns
    • New column name
    • Separator: _ / / / - / space / custom
    • Empty-cell handling: skip or keep

    Завантажити

    • Auto file name: original_edited.csv
    • Line endings: LF / CRLF

    How to use (3 steps)

    1. Load a CSV (Choose CSV or drag & drop).
    2. Preview and edit: keep columns, reorder, split or merge if needed.
    3. Download the edited CSV. The original file is untouched.

    Example: split & merge

    Вхід
    id,last,first,region
1,Smith,Anna,CA-San Francisco
2,Lee,Ken,WA-Seattle
    Вивід
    full_name,region_state,region_city
Smith Anna,CA,San Francisco
Lee Ken,WA,Seattle

    Примітки

    • Preview shows only the first N rows for speed. The conversion applies to the whole file.
    • Proper CSV parsing is required when quoted fields contain commas or line breaks (supported by this tool).
    • Performance depends on your device for large files. Keep preview light.
    • This tool runs entirely in your browser. No data is uploaded.

    Tips

    • Use regex split for mixed separators (e.g. commas + spaces).
    • Merge columns with a custom separator to create stable IDs.
    • If you see garbled text, switch the encoding to Shift_JIS.

    Поширені запитання

    Are uploaded CSV files sent to a server?

    Ні. Все працює локально у вашому браузері.

    Can I change column order?

    Yes. Use the advanced option and drag columns to reorder them.

    How many rows are shown?

    Preview shows only the first N rows for speed, but the conversion applies to the full file.

    Can I handle CSVs with multiple delimiters?

    Yes. Use the advanced regex delimiter option for mixed separators.

    Can I choose the separator when merging columns?

    Yes. You can set _, /, -, space, or any custom separator.

    Will the original file be modified?

    No. The edited CSV is downloaded as a new file.

    Can I open Shift_JIS CSVs?

    Yes. Switch the encoding to Shift_JIS or use Auto detection.