Developer Tools

A handy set of utilities for developers and power users. Format and validate JSON, encode and decode Base64 and URLs, generate and scan QR codes, pick colors and build gradients, test regular expressions, generate hashes and passwords, and convert timestamps. All free and running in your browser.

JSON Formatter

Format, validate, and minify JSON

100% LocalLocal

Base64 Encode/Decode

Encode or decode Base64 strings

100% LocalLocal

URL Encoder/Decoder

Encode or decode URL parameters

100% LocalLocal

Color Picker

Pick colors, convert formats, generate palettes

100% LocalLocal

QR Code Generator

Generate QR codes for URLs, text, UPI

100% LocalLocal

QR & Barcode Scanner

Scan QR codes, UPI, barcodes with camera

100% LocalLocal

Regex Tester

Test regular expressions with live matching and groups

100% LocalLocal

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes

100% LocalLocal

Password Generator

Generate secure random passwords with custom rules

100% LocalLocal

Timestamp Converter

Convert Unix timestamps to dates and vice versa

100% LocalLocal

CSS Gradient Generator

Create beautiful CSS gradients with live preview

100% LocalLocal

Color Palette Generator

Generate harmonious color palettes from any base color

100% LocalLocal

12 free developer tools — all private, with most running entirely in your browser. Browse all FixMyFile tools.