What if my CSV doesn't have a header row?

The first row is always read as the header row. If your file has no real headers, the first data row will be used as column names, so it is worth adding one before uploading.

Are number and currency values kept as numbers, or strings?

The workspace infers a real type per column (number, currency, date, text) before export, so numeric-looking columns export as real JSON numbers rather than quoted strings.

Does this use AI, like the PDF and image tools?

No. CSV is already a structured format, so it's parsed deterministically, the same way JSON, XLSX, and XLS are.

What does the JSON output look like?

A JSON array of objects, pretty-printed with two-space indentation: one object per CSV row, keyed by the header names from the first row.

Are blank lines and quoted commas handled?

Blank lines are skipped. Fields wrapped in double quotes can contain commas and are read as a single value.

Which columns are used as JSON keys?

The names in the header row, exactly as written. Duplicate or empty header names are worth fixing in the CSV first, because each key can only hold one value per object.

How accurate is the AI data extraction?

Datafromfile uses AI vision models to read document structure (tables, totals, and line items) directly from PDFs, scans, and photos. Extraction quality varies by document: a clean digital PDF extracts more reliably than a blurry photo, and clearly printed text is more reliable than handwriting or a heavily irregular table layout. Every result is flagged as either high confidence or needs review, never a fabricated precision percentage, and you can check the data yourself in the editable workspace before exporting. Every plan uses the same extraction models; paid plans get more monthly volume and faster concurrent processing, not a different or more accurate model.

What file types can I upload, and what can I export to?

Upload PDF, JPG, PNG, WebP, XLSX, XLS, CSV, JSON, XML, or HTML. Every plan, including Free, exports to Excel (.xlsx), CSV and JSON; Pro and above add Markdown export too, see the plan comparison on the Pricing page for the exact breakdown.

What if my file is too large, or has a lot of pages?

Each plan has its own real per-file limit, enforced on the actual file you upload, not just a claim: 3 MB on Free, 10 MB on Pro, 25 MB on Business, and 100 MB on Enterprise. A multi-page document, like a 10-page bank statement, is supported and read as one continuous result as long as the whole file stays under your plan's limit; a scan larger than that may need to be compressed or split first.

Is my financial and business data private and secure?

Yes. Each user’s documents are isolated at the database level, every upload travels over TLS, the original file is not kept once extraction finishes, and nothing you upload is used to train AI models.

Is the Free plan really free, and what actually triggers an upgrade?

Yes: 15 real AI operations a month (an extraction, an Ask Your Data question, or an AI transform each count as one), no credit card required, indefinitely. Excel export and AI-powered cleaning are included on Free. You'd look at a paid plan once you need more than 15 operations a month, bigger files, larger batch uploads, or Markdown export, all Pro and above.

Convert CSV to JSON Online

Convert a CSV file into clean, structured JSON: deterministic parsing, no AI model involved, ready for a script, an API request, or a database import.

Drop your file here

or browse your computer

CSV · up to 3 MB

Features

Deterministic parsing, not guessed by an AI model, so the same input always produces the same output
The first row is read as column headers automatically
Each subsequent row becomes one JSON object keyed by those headers
Review and edit every value in the workspace before exporting

How it works

Upload your CSV: A .csv file with a header row.
Automatic structure parsing: Headers become keys; each row becomes one JSON object.
Export JSON: Download as .json or copy straight to your clipboard.

Frequently asked questions

What if my CSV doesn't have a header row? The first row is always read as the header row. If your file has no real headers, the first data row will be used as column names, so it is worth adding one before uploading.
Are number and currency values kept as numbers, or strings? The workspace infers a real type per column (number, currency, date, text) before export, so numeric-looking columns export as real JSON numbers rather than quoted strings.
Does this use AI, like the PDF and image tools? No. CSV is already a structured format, so it's parsed deterministically, the same way JSON, XLSX, and XLS are.
What does the JSON output look like? A JSON array of objects, pretty-printed with two-space indentation: one object per CSV row, keyed by the header names from the first row.
Are blank lines and quoted commas handled? Blank lines are skipped. Fields wrapped in double quotes can contain commas and are read as a single value.
Which columns are used as JSON keys? The names in the header row, exactly as written. Duplicate or empty header names are worth fixing in the CSV first, because each key can only hold one value per object.
How accurate is the AI data extraction? Datafromfile uses AI vision models to read document structure (tables, totals, and line items) directly from PDFs, scans, and photos. Extraction quality varies by document: a clean digital PDF extracts more reliably than a blurry photo, and clearly printed text is more reliable than handwriting or a heavily irregular table layout. Every result is flagged as either high confidence or needs review, never a fabricated precision percentage, and you can check the data yourself in the editable workspace before exporting. Every plan uses the same extraction models; paid plans get more monthly volume and faster concurrent processing, not a different or more accurate model.
What file types can I upload, and what can I export to? Upload PDF, JPG, PNG, WebP, XLSX, XLS, CSV, JSON, XML, or HTML. Every plan, including Free, exports to Excel (.xlsx), CSV and JSON; Pro and above add Markdown export too, see the plan comparison on the Pricing page for the exact breakdown.
What if my file is too large, or has a lot of pages? Each plan has its own real per-file limit, enforced on the actual file you upload, not just a claim: 3 MB on Free, 10 MB on Pro, 25 MB on Business, and 100 MB on Enterprise. A multi-page document, like a 10-page bank statement, is supported and read as one continuous result as long as the whole file stays under your plan's limit; a scan larger than that may need to be compressed or split first.
Is my financial and business data private and secure? Yes. Each user’s documents are isolated at the database level, every upload travels over TLS, the original file is not kept once extraction finishes, and nothing you upload is used to train AI models.
Is the Free plan really free, and what actually triggers an upgrade? Yes: 15 real AI operations a month (an extraction, an Ask Your Data question, or an AI transform each count as one), no credit card required, indefinitely. Excel export and AI-powered cleaning are included on Free. You'd look at a paid plan once you need more than 15 operations a month, bigger files, larger batch uploads, or Markdown export, all Pro and above.

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