Tools for People Who Work with Data

6 tools useful for format conversion and data validation.

A good chunk of working with data goes into getting it into the right format before any actual analysis starts. JSON to CSV and CSV to JSON move between two common formats without losing anything along the way, while JSON Formatter makes a minified blob readable and JSON Validator flags syntax errors. PDF to Excel pulls a table out of a PDF report and turns it into something you can actually work with. Data Size Converter handles quick conversions between units like bytes, KB, MB, and GB — useful for checking whether a file fits under a size limit.

What are these tools good for?

Analysts, office staff who build reports, and people wiring up small integrations hit the same problem again and again. The data arrives in one format and is needed in another. This collection covers the conversion and checking steps in between.

JSON to CSV: Turn a JSON list from an API or an app export into a table you can open in Excel or Google Sheets. Flat arrays of objects with the same fields give the cleanest result.
CSV to JSON: Move a hand-built spreadsheet into a system that takes JSON, a test fixture, or a data file for a web page.
JSON Formatter: See the structure of a big JSON blob squashed onto one line, and where nested fields start and end.
JSON Validator: Check a config file or hand-edited JSON for syntax errors before loading it into a system.
PDF to Excel: Get reports and lists that are only shared as PDFs into rows you can analyze.
Data Size Converter: Work out whether an export will fit an upload limit, or how much of a storage quota it will use.

A sample workflow

An organization publishes its branch list only as a PDF, and you need it as JSON for a map app. PDF to Excel puts the rows in a spreadsheet, where you fix column names and drop empty rows. You save it as CSV and convert it with CSV to JSON. After a few manual edits, the JSON Validator confirms the file is valid and the JSON Formatter shows the fields landed in the right place. If the file is large, the Data Size Converter helps you compare it with the app's upload limit.

Tip

The most common CSV problem is delimiters and encoding. Excel set to a Turkish or other European locale may separate columns with semicolons and use a comma for decimals, so check both before converting. With data sizes, whether 1 KB means 1,000 or 1,024 bytes depends on the tool, which matters when you're close to a limit.