PDF to JSON
Upload a PDF and describe the data you want, and get back structured JSON — pull tables, form fields, invoices, or key values out of a document and into a format your code can use. Best for structured PDFs; results vary on complex scanned layouts. Free to start.
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How it works
Upload your PDF
Provide the document — an invoice, form, report, or any PDF with data you want extracted.
Describe what to extract
Say which tables, form fields, or specific values you want, and how to structure them.
The tool extracts to JSON
The data is pulled out and returned as structured JSON — an array for tables, an object for fields.
Review and use
Check the important values against the source, then copy or download the JSON for your app.
Who is this for
Developers automating document intake
Pull invoice, form, or report data out of PDFs into JSON your code can process.
Finance and ops teams
Turn recurring PDF documents into structured data without manual re-keying.
Anyone stuck with data locked in PDFs
Extract tables and fields into JSON instead of copying values by hand.
Six prompt-engineering tips that move the needle
Small changes in how you write a prompt make the biggest difference in output.
Prefer digital PDFs
Digitally-generated PDFs extract far more accurately than scanned images.
Describe the exact fields
Name the values or columns you want so you get just that, not the whole document.
Point to the right page or table
If the PDF has several tables, say which page or table to extract.
Give the table's headers
Naming the columns helps map a table into a clean JSON array of objects.
Verify scanned results
For scanned or low-quality PDFs, always check the extracted values against the source.
Redact before uploading
Remove sensitive personal or financial data you don't need extracted.
What to expect
For a clean, digitally-generated PDF with clear tables or fields, the tool extracts accurate structured JSON in under a minute. Invoices, forms, and reports with consistent layouts work best. Scanned documents, multi-column layouts, and merged table cells are the main sources of extraction errors and should be double-checked.
Example: A user uploaded a digital invoice PDF and asked for the line items as a JSON array with description, quantity, and price. The tool returned an array of objects — one per line item — with the descriptions as strings and quantities and prices as numbers, matching the invoice table.
Good to know
- Scanned or image-based PDFs rely on text recognition and are less accurate than digital PDFs, especially at low quality.
- Complex layouts — multiple columns, merged cells, or irregular tables — can produce misaligned or incomplete JSON.
- No extraction is perfect; important values should be verified against the source document before use.
Frequently asked questions
What does a PDF to JSON converter do?
It reads a PDF and pulls the data you describe — tables, form fields, or specific values — into structured JSON your code or app can use, rather than leaving it locked in a document layout.
What kinds of PDFs work best?
Digitally-generated PDFs with clear structure — invoices, forms, reports, and data tables — give the most accurate results. The clearer the layout, the more reliable the extraction.
Does it work on scanned PDFs?
It can attempt scanned documents using text recognition, but accuracy drops with low-quality scans, unusual fonts, or complex layouts. Always review the JSON from a scanned source before relying on it.
Can it extract tables into arrays?
Yes — a table can be turned into a JSON array of objects, using the header row as keys and each data row as an object. Specify which table or page if the PDF has several.
Can I extract just specific fields?
Yes — describe the fields you want (like vendor, date, and total from a receipt) and it returns just those as a JSON object, rather than dumping the whole document.
How accurate is the extraction?
For clean, structured PDFs it's quite reliable, but no extraction is perfect — column alignment, merged cells, or ambiguous layouts can cause errors. Treat the output as a strong starting point and verify important values.
Is my document private?
Your PDF is used only to perform the extraction and isn't published. Avoid uploading documents with sensitive personal or financial data unless you're comfortable doing so, or redact those parts first.
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