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Privacy-First CSV Tools

Your Data, Your Browser, Zero Uploads

View, convert, format, and compare CSV files — all processed in your browser. No uploads. No servers. GDPR-compliant by design.

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Every CSV Tool You Need

From viewing large files to comparing datasets — every tool runs entirely in your browser. Your data never touches a server.

CSV Viewer

View, sort, and filter any CSV file in a clean, responsive table. Handles 100K+ rows with virtual scrolling — no freezing, no lag.

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CSV to JSON

Convert CSV to JSON and back instantly. Choose array-of-objects or array-of-arrays format. Pretty-print or minify with one click.

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CSV to Excel

Convert between CSV and Excel formats. Reads multi-sheet Excel workbooks. Preview your data before downloading.

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CSV Formatter

Fix messy CSV files. Change delimiters, trim whitespace, remove BOM, fix quoting issues — normalize any CSV to clean data.

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CSV Diff

Compare two CSV files side by side. See added, removed, and modified rows with cell-level highlighting.

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Your Data Never Leaves Your Device

CSVArc processes everything in your browser using JavaScript. There are no servers to upload to, no accounts to create, and no data to collect.

  • 100% browser-based JavaScript processing — your CSV files never leave your device
  • No accounts, no tracking, no cookies — completely anonymous usage
  • GDPR-compliant by design — no data transmission means no data processing to regulate
  • Works offline once loaded — no ongoing server connection required

How It Works

Step 1: Choose a Tool

Pick from CSV Viewer, Converter, Formatter, Excel export, Diff, and more.

Step 2: Drop Your File

Drag and drop your CSV file or click to browse. No server-imposed size limits.

Step 3: Get Instant Results

View, convert, or compare your data instantly. Download the result when ready.

Who Uses CSVArc?

Developers

Convert API response data between CSV and JSON formats. View large dataset exports without crashing your spreadsheet app.

CSV Viewer CSV to JSON

Data Analysts

Clean messy exported CSVs before importing into analytics tools. Compare data snapshots to catch changes between runs.

CSV Formatter CSV Diff

Business Teams

Convert Excel reports to CSV for database imports. Handle sensitive employee data, customer lists, and financial records without uploading to third-party servers.

CSV to Excel CSV Formatter

How CSVArc Compares

Feature CSVArc convertcsv tableconvert csvjson
100% Client-Side Processing — — ~
No File Uploads — — ~
CSV Viewer (100K+ rows) — — —
CSV to JSON
CSV to Excel —
CSV Formatting / Fixing ~ — —
CSV Diff / Compare — — —
Modern Design — —
Mobile Friendly ~ ~ ~
No Account Required

Frequently Asked Questions

Is my data safe with CSVArc?
Absolutely. CSVArc processes everything in your browser using JavaScript. Your CSV files are never uploaded to any server — they stay on your device. There is no server-side processing, no temporary file storage, and no way for anyone (including us) to access your data.
How large a CSV file can CSVArc handle?
The CSV Viewer uses virtual scrolling to handle files with 100,000+ rows without freezing your browser. Other tools like the converter and formatter work well with files up to 50 MB. The practical limit depends on your device's available memory.
What makes CSVArc different from convertcsv.com or tableconvert.com?
Privacy. The largest CSV tool sites process your data on their servers — meaning your files leave your device. CSVArc runs entirely in your browser. For teams handling customer lists, salary data, financial records, or any PII, this is a compliance requirement, not just a preference.
Do I need to create an account?
No. CSVArc has no accounts, no login, and no signup. You can use all tools immediately without providing any personal information.
Is CSVArc GDPR compliant?
Yes, by design. Since your data never leaves your browser, there is no data processing to regulate. CSVArc doesn't collect, store, or transmit any user data. This makes it the simplest GDPR-compliant choice for CSV processing.
What file formats are supported?
CSVArc supports CSV, TSV, and plain text files with delimited data (auto-detected delimiters including comma, semicolon, tab, and pipe). The Excel converter also supports XLSX and XLS files. JSON conversion supports both array-of-objects and array-of-arrays formats.

Ready to Process Data Privately?

Start using CSVArc now — no signup, no uploads, completely free.

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