Slice CSV
Extract a slice from a CSV file. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Slice CSV
- 1. Paste the source CSV. Put the full file in the input pane. The slicer treats it as a grid of rows and columns and lets you carve out any rectangular region of it.
- 2. Set the row range. From row and To row bound the records you keep, counted from 1. Setting To row to 0 means through the last row, handy when you want everything from row 100 onward.
- 3. Set the column range. From column and To column work the same way across the width. Combine both ranges to grab, say, columns 2 through 4 of rows 10 through 50 in one operation.
- 4. Copy the extracted block. The output contains exactly the rectangle you described, still valid CSV. Copy it out as a smaller, focused dataset.
When to use Slice CSV
Slice CSV extracts a rectangular window from a larger file by row and column numbers. It is spreadsheet range selection without the spreadsheet, useful whenever you need a specific chunk of a file and the rest is noise.
- Taking a sample from a huge file. A million-row export is too big to eyeball. Slice out rows 1 through 200 to get a representative sample your editor and your reviewers can handle.
- Dropping metadata columns. An export pads real data with internal ID and timestamp columns on the left. Slicing from column 3 onward yields just the fields the report needs.
- Splitting a file at a known boundary. Rows 1 to 5000 belong to one batch and the rest to another. Two slice operations produce the two files without scripting a split.
- Isolating a problem region. A parser complains about something near row 8,214. Slice rows 8200 through 8230 to inspect the offending neighborhood in isolation.
Examples
Take rows 2–3
Input
name,age Ada,36 Grace,45
Output
Ada,36 Grace,45
About the Slice CSV tool
Slice CSV does its work locally, right in the browser. Extract a slice from a CSV file. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the CSV Tools collection on EditSafely, a set of 133 small, focused CSV utilities that share the same instant, private workspace.
You can shape the output with 4 settings, including From row, To row (0 = last), From column and To column (0 = last), and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Does Slice CSV cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.