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Clean CSV File

Clean a CSV by trimming spaces, removing empty rows, and optionally deduplicating rows.

✓ Free to use
⚡ Queue-powered
🔒 Privacy-first

How it works

1

Upload your CSV file

Select the CSV that needs cleaning. Works with exports from any database, CRM, spreadsheet tool, or scraper.

2

Whitespace is trimmed from every cell

Leading and trailing spaces are removed from every cell value in every row. This prevents join failures and formatting issues on import.

3

Empty rows and duplicates are removed

Rows where all cells are empty or whitespace-only are dropped. Then rows identical across all columns are deduplicated, keeping the first occurrence.

4

Download the cleaned CSV

Download a clean, normalised CSV with the original column structure preserved and all cleaning operations applied.

Quick start

Start in under 10 seconds: choose file, process, download.

No signup required. Files are automatically cleaned up based on your plan retention settings.

Step 1

Upload

Drag files in or browse from your device.

Step 2

Process

Queue runs the conversion with smart defaults.

Step 3

Download

Get your output instantly when done.

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Step 1 — Upload a file

Drag a JPG, PNG, or WebP image onto the drop zone below, or click Browse. Drop a PDF onto the upload zone below to get started. Select a file or drag it onto the upload zone below.

Step 2 — Processing in the cloud

Your file is in the queue. This usually takes a few seconds — Pro users get priority processing.

Step 3 — Compare, download, or share

Drag the compare slider to see before/after. Use ← → keyboard arrows for precision. Download when ready. Your result is ready. Download the output or save it to your workspace.

Usage

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Drag & drop your image here

or

Max file size: 10MB

Max files per run: 1

Supported formats: CSV

Upload exactly one CSV file, up to 10MB. It will be cleaned by trimming spaces, removing empty rows and deduplicating identical rows.

Smart file detection

✓ 1 image uploaded successfully

Ready to compress

✓ images uploaded successfully

Ready to compress

Saved tool settings

Save your current settings and apply them with one click.

Pipeline Builder

Build a multi-step flow (compress, convert, resize, merge) and run it in one upload.

Saved presets

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Files are uploaded and processed in the background. You will see links and previews when the run is finished.

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PDF workspace

Keyboard: Left/Right to change page, [ or ] to rotate the focused page, +/- to zoom, 0 to reset zoom.

Delete/restore, duplication, and page rotation apply to the reordered PDF output. Bulk rotate uses the marked target pages.

Pages

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Input summary

Results

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Conversion Summary

Original size

Result size

Compression

Saved ratio:

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💡

Tip:

Move the slider to compare the original and optimized images side-by-side. Look at the compression badge for quality metrics.

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Reduction

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Saved ratio:

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Downloads

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Read-only viewer results

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Pages

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Workbook tabs

Preview

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PDF compression summary

Original size

Compressed size

Reduced by

Success! Your PDFs are merged. Success! Your PDF is compressed. Success! Your PDF was split. Success! Your PDF is ready. Success! Your PDF is ready.

Download your output now or save it to your workspace.

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CSV processing summary

Input rows

Output rows

Output files

Rows removed

Output size

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Smart next steps

Based on this run, here are two high-impact follow-up actions.

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About Clean CSV File

CSV files exported from databases, CRMs, or spreadsheets often carry quality issues that cause import failures and silent data errors: extra spaces around values that break exact-match joins, empty rows inserted by a delete operation that appear as blank records, and duplicate ro...

→ Clean a CRM export before re-importing it to remove empty rows left by deleted contacts. → Deduplicate a merged CSV file after combining exports from two systems with overlapping records. → Trim whitespace from a legacy system export where column values have trailing spaces. → Prepare scraped data for analysis by removing blank rows and accidental repeated header rows.

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📦 Supported formats 1 file types

CSV

❓ Frequently asked questions 4 answers

Three operations are applied: (1) leading and trailing whitespace is trimmed from every cell value, (2) rows where all cells are empty or whitespace-only are removed, and (3) rows with identical values in every column are deduplicated, keeping the first occurrence.

No. Only leading and trailing whitespace is removed from cell values. All other characters, the column structure, and the header row are preserved exactly.

When two or more rows have identical values in every column, the first occurrence is kept and subsequent duplicates are removed. Row order in the output follows the original file.

Currently deduplication compares all columns. Column-specific deduplication — for example, removing rows with a duplicate email address regardless of other fields — is not yet available.