DataFrog Tools

DataFrog is a completely free collection of 40+ data conversion tools that runs entirely inside your browser. No signup, no account creation, no file uploads to any server — nothing. You paste your data or load your file, it processes everything locally on your own machine using JavaScript, and boom, your converted file is ready. Simple as that. The tool covers pretty much every format a developer deals with on daily basis — JSON, CSV, Excel (XLSX/XLS), XML, YAML, SQL, QIF, PDF, and more. Whether you are converting an API response from JSON to CSV for your client, turning an Excel sheet into JSON for some frontend work, generating SQL inserts from CSV data, or even converting QIF bank files for finance reporting — DataFrog has a tool for it. What I personally like most is that it also works offline after first visit. So even if you are sitting somewhere with bad internet (we all know how that feels), it still works. No tension. Tools Available:

Excel Tools: Excel to JSON, HTML, TXT, PDF, SQL, CSV, XML — plus Remove Excel Duplicates CSV Tools: CSV to Excel, HTML, JSON, PDF, TXT, XML, SQL — plus Remove CSV Duplicates JSON Tools: JSON to CSV, Excel, PDF, SQL, TXT, XML, YAML, JSON Schema — plus converters to Dart, HTML, TypeScript, Java, C#, Go Structs — plus Minify/Prettify JSON XML Tools: XML to JSON, XML to XSD Generator SQL Tools: SQL to CSV, Excel, XML — plus Remove Duplicates in SQL YAML Tools: YAML to JSON QIF Tools: QIF to CSV, Excel, QBO PDF Tools: PPTX to PDF, PDF to PPTX Utilities: UUID Generator, Base64 Encoder/Decoder, Hash Generator, Recordset Converter

Who should use this? Developers who work with APIs, analysts who handle data exports, finance people dealing with bank statements, DevOps folks working with YAML configs, or basically anyone who needs to convert data formats without writing a script every single time. Privacy? Full privacy, yaar. Nothing goes to any server. All processing happens on client side. You can even use it for confidential or proprietary data without any worry. Verdict: One of those rare free tools that actually does what it says, with zero nonsense. Bookmark kar lo — you will need it.