Encoding fixed
ä → ä
Columns split
1 col → 3
Cleaned up
trim · dedup
Any language
中文 АБВ
0K+
rows supported
0
fix types
Files stay on
your device
Drop your CSV file here
or click to browse
No account, no upload, no wait — drop a file and walk away with a fix.
When you double-click a CSV file and Excel shows gibberish, one long column, or an error — it's almost always one of three things:
You don't need to know which one. Drop the file above — we detect and fix it in one click.
This is the most common CSV problem. All your data is crammed into column A.
It happens because the file uses semicolons or tabs instead of commas, and your version of Excel doesn't know how to split them.
The usual fix: Data → Text to Columns → choose the right separator. Or just drop the file here and we'll convert it automatically.
Seeing ä instead of ä? That means the file was saved in one text format but opened in another.
This is extremely common with files from European or Asian systems. Customer names, addresses, product descriptions — any text with accents gets scrambled.
Drop the file here. We detect the correct format and convert everything so it displays properly.
The manual way: open in Notepad, search Google, try five things, give up and ask IT.
The fast way: drop the file here. We scan for 14 types of problems — columns, text format, invisible characters, empty rows, duplicates — then fix everything with one click. Takes seconds, not minutes.
Nowhere. Everything runs in your browser. Your file never leaves your computer. You can verify this by checking the Network tab in your browser — zero data is sent anywhere.
Your file uses a different column separator than your program expects. For example, files from European systems use semicolons instead of commas. We detect the right separator and convert it.
Column separation issues, garbled text (like ä instead of ä), empty rows, duplicate rows, extra spaces, invisible characters, and more — 14 types of problems total.
Tested with 200,000+ rows. Files up to 100 MB are supported — above that, browser memory starts to matter. Everything runs in your browser, no upload.
Yes. The fixed file is a standard CSV that works in all spreadsheet programs.
That's the single most common reason people come here. German umlauts, French accents, Japanese kanji — the file is fine, your computer is just reading it with the wrong encoding. We fix it.