The Privacy-First Developer Toolkit

No server uploads. No API keys leaked. 100% Client-side processing for peace of mind.

🛠️

Developer Utilities

11 tools

🆔

UUID Generator

Bulk generate v4 UUIDs

💻

JSON Formatter

Validate & beautify JSON

📸

Code Snap

Beautiful code screenshots

⏰

Cron Generator

Visual cron scheduler

🔢

Base64 Converter

Text & Image encoder/decoder

↔️

Diff Checker

Compare text differences

🔐

Password Generator

Secure random passwords

⏳

Unix Timestamp

Convert epoch time to date

📊

Local SQL Analyzer

Analyze CSV/JSON/Parquet files

🗄️

SQLite Viewer

Debug SQLite files locally

🔑

JWT Debugger

Securely decode JWTs offline

🖼️

Image & Media

6 tools

📉

Smart Compressor

Compress to specific size (MB)

🎨

Image Converter

WebP/PNG to JPG converter

📸

HEIC to JPG

Convert iPhone photos to JPG

📺

YouTube Thumbnail

Download 4K thumbnails

📱

QR Code Generator

Customizable QR codes

🎥

Screen Recorder

Record screen with no watermarks

📄

PDF Tools

2 tools

🗜️

PDF Compressor

Shrink PDF to target size

📑

PDF to Image

Convert PDF pages to JPG

🤖

AI & Text

2 tools

🎙️

AI Transcriber

Video to text (Whisper)

📝

Word Counter

Count words & convert case

Why Choose KNothing?

Privacy First

Logic runs in your browser. No data is sent to our servers. Your API keys and content are safe.

Offline Capable

PWA enabled. Works without internet. Install it on your device for instant access.

Blazing Fast

Frequently Asked Questions

Is it safe to paste my API keys?

Yes. KNothing is designed to be 100% client-side. We do not have a backend database to store your data. Everything happens in your browser.

Is it free?

Yes, all tools are free to use. The project is open source and community-driven.

Share KNothing

Help us grow by sharing these tools with your developer friends.