10 tools · runs on your device

Developer tools

Format, decode and test without pasting sensitive data into someone else’s server. Every tool runs locally in your browser.

Data & Code

JSON Formatter

Validate and pretty-print JSON with clear error messages.

JSONFormat

Data & Code

JSON to CSV

Flatten JSON arrays into a CSV you can open in Excel.

JSONCSV

Data & Code

JWT Decoder

Decode JWT header, payload and expiry in your browser.

JWTAuth

Data & Code

Base64 Encoder / Decoder

Encode or decode Base64 with full UTF-8 support.

Base64

Data & Code

Timestamp Converter

Unix timestamps to readable dates and back.

TimestampDate

Data & Code

Regex Tester

Test regular expressions with live match highlighting.

Regex

Edit PDF

PDF Merger

Combine PDFs into one file, in the order you choose.

PDFMerge

Edit PDF

PDF Splitter

Extract page ranges or split every page into its own file.

PDFSplit

Convert PDF

PDF to JPG / PNG

Export PDF pages as JPG or PNG images at the resolution you need.

PDFJPGImage

Convert PDF

JPG to PDF

Turn JPG, PNG photos and scans into a single PDF.

JPGImagePDF
31 toolsUtility toolsEveryday file, text and calculation tools.6 toolsFinance toolsCalculators for investing, loans and GST in India.