filestation.io
Workspace JSON & CSV tools
Nothing uploaded
HomeReturn to your dashboardDeveloper toolsJSON, encoding, checksums and moreCompress PDFMake a smaller PDF for easy sharing.PDF to WordExtract PDF text into an editable Word file.Merge PDFBring multiple PDFs together in one file.Edit PDFAdd text, handwritten numbers, highlights and drawings with a live preview.Images to PDFTurn JPG, PNG, BMP, GIF and WebP into a PDF.Sign PDFDraw your signature and place it on a page.Split PDFSplit at visual cut points or save separate pages.PDF to JPGExport PDF pages as high-quality images.PDF to PNGSave crisp PNG images of your pages.Rotate PDFTurn selected pages in the right direction.
Enter opens the first result · Esc closes search
All tools

Developer tools

JSON & CSV tools

Format, validate and minify JSON, or convert CSV data.

On your device

Input

0 characters · Drop JSON or CSV here or paste text · Processed in this tab

Output

Ready when you are.

For CSV to JSON, the first row supplies unique column names. Leading zeros stay intact. For JSON to CSV, use flat records; nested objects must be flattened first. Standard JSON number precision applies, and duplicate object keys keep their last value.

Nothing uploaded Choosing a file starts local processing in your browser. If you switch to a server conversion or save to your account, FileStation asks before upload.

Developer tools

JSON & CSV tools: how it works

Format or minify JSON, find syntax errors and convert flat JSON records to CSV or a CSV table to JSON. Paste data or open a local file; your content is processed in this tab.

  1. 1

    Paste JSON or CSV, choose a local file, or load an example.

  2. 2

    Choose formatting or conversion and review the output.

  3. 3

    Copy the result or download it as a JSON or CSV file.

Before you start: Up to 2 MB of text per operation. JSON formatting uses standard JavaScript number precision; keep long IDs and exact decimal values as quoted strings. CSV conversion supports comma, semicolon or tab separators.

JSON & CSV tools FAQs

Will CSV conversion keep my IDs and nested objects?

CSV to JSON keeps every cell as text, including leading zeros. JSON to CSV accepts an array of flat objects; nested objects need flattening first. Missing and null values become empty CSV cells, so a round trip is not type-preserving. Spreadsheet-safe export prefixes possible formula cells with an apostrophe.

Does my image or data leave my device?

The image and data tools process your input in this browser tab. They do not upload its contents to a conversion service. Download or copy your result before leaving the page.

Is Filestation free to use?

The Free plan includes 10 downloads per account each day and 3 saved files or PDF drafts, up to 25 MB each. Pro and Team remove download and saved-item count limits. Tool and device limits still apply. No card is required for Free.

Can I use a phone, tablet or desktop?

The tools run in a modern browser with JavaScript enabled. Results and performance depend on browser support, device memory and document complexity. If an in-app browser cannot save a result, open the site in your regular browser.

Related tools

CSV to PDFPDF to ExcelText to PDFPDF to textAssignment Pack

Practical guides

Document workspace workflowsCompress to a size limitMerge for universityHandwritten receipt numbersSecurity & file handling100 PDF questions answeredFix a rejected PDF uploadCombine photos into a PDFSplit or extract pagesReduce PDF size clearlyMerge and arrange documentsSave a PDF on iPhoneThe CLEAR document checkCheck an assignment PDFCompare compression methodsAll guides →
Explore resumestation.io ↗
FileStationⓘ