§
§ · free tool
CSV viewer & editor. A spreadsheet that never phones home.
Drop or paste a CSV, then sort, search and edit it like a spreadsheet — with correct quoted-field parsing and automatic delimiter detection. Export tidy CSV or JSON. Everything runs in your browser; nothing is uploaded.
A free online tool by Digital Heroes§ 01 · the tool
Drop a .csv file here
or click to browse — also .tsv / .txt
Files never leave your browser
or
A spreadsheet that never phones home
Most online CSV editors upload your file to a server. This one parses and edits everything in your browser: quoted fields, commas and line breaks inside quotes, and tab, semicolon or pipe delimiters are all detected automatically. Edit inline, rename or add columns, sort by any column, filter rows, then export tidy CSV or JSON — no account, nothing uploaded, free forever.
§ 02 · what you can do
Everything a CSV tool should do.
- View any CSV as a table instantly, with automatic delimiter detection for comma, tab, semicolon and pipe files.
- Sort by any column with one click, cycling ascending → descending → unsorted, with numeric-aware comparison.
- Search and filter rows in real time across every column at once.
- Edit cells inline and rename, add or delete columns and rows without leaving your browser.
- Export to CSV or JSON, or copy the CSV straight to your clipboard.
- Handle quoted fields correctly, including commas and line breaks inside quoted values (RFC 4180).
§ 03 · how to use it
Four steps, no manual.
- Drop a CSV file onto the upload area, click to browse, or paste raw CSV text. There's a Load sample button too.
- Tick or untick First row is header to control whether the top row becomes column names.
- Use the search bar to filter rows, click any column header to sort, and click any cell to edit it. Use + Row / + Column to grow the table.
- Click Download CSV or Download JSON to save your result — your data stays on your device.
§ 04 · faq
Frequently asked questions.
Is the CSV Viewer & Editor free?
Yes — completely free for everyone. No sign-up, no account and no usage limits.
Is it private? Are my files uploaded anywhere?
No. The viewer parses and edits your CSV entirely in your browser on your own device, so your data never leaves your computer and nothing is uploaded to a server.
Which delimiters and quoted fields does it handle?
It auto-detects comma, tab, semicolon and pipe delimiters, and follows RFC 4180 for quoted values — so commas, line breaks and escaped double-quotes inside a quoted field are parsed correctly. A byte-order mark at the start of the file is stripped automatically.
How big a file can I open?
Files up to 25 MB. For responsiveness only the first 2,000 matching rows are drawn to the screen at once, but sorting, searching, editing and export all operate on the full data set — every row is included when you download.
Can I export to JSON?
Yes. Download JSON turns each row into an object keyed by your column names, and numbers, booleans and null are coerced to real JSON types where the value looks like one. You can also download CSV or copy CSV to the clipboard.
Published · Last updated .
