New
File Operations - Convert, Crop, Resize, Rotate, and more
All-in-one toolkit for developers
50+ essential tools in a single desktop app. Work offline, keep your data private, and boost your productivity without the browser tab chaos.
Lightweight - Under 40MB
Offline
Near-Native Speed
Built with Rust
Why Choose Our Dev Toolkit?
A better way to work as a developer
Stop pasting your data into random websites
Keep your sensitive data private and secure with SelfDevKit. It works offline, and the data stays on your device.
"I just want to code, man" Sure, we fixed it
No more ads & cookies. Every developer is tired of cookie popups and ads. Focus on what matters in a clean, distraction-free environment.
Close your 50+ browser tabs
SelfDevKit is one app for all your developer needs. Time to forget browser tab shortcuts
Features
Developer Tools & Utilities. Offline and Privacy Focused.
JSON Tools
- Format, beautify, customize the view of JSON data
- Minify JSON for production
- Validate JSON structure
- Convert JSON to other formats
File Generator
Generate test files for development and testing. Create PDF, CSV, PNG, JPG, TXT and more with customizable content and sizes.
Video Converter
- Convert between multiple video formats (MP4, AVI, MOV, WEBM, MKV)
- High-quality video processing with adjustable settings
- Audio-to-video conversion with customizable backgrounds
- Local processing for complete privacy
Audio Converter
- Support for lossless (WAV, FLAC) and compressed (MP3, AAC, OGG) formats
- Quality settings optimization for bitrate and compression
- Preserve metadata when possible
- Fast processing with optimized codecs
HTML tools & Markdown editor
- Format and minify HTML code
- Validate HTML structure
- Edit Markdown with live preview
- Convert Markdown to HTML
JWT Tools
Decode, verify, and debug JSON Web Tokens. JWK signature verification with automatic key fetching from identity providers.
Secret Generators
- Generate secure API keys
- Create key pairs for encryption
- Generate random secrets
- Customize secret formats
ID Generate & Analyze
Generate and analyze various ID formats. Create UUIDs, GUIDs, and custom IDs, plus decode and extract information from existing IDs.
Regex Validator
Test and validate regular expressions with real-time feedback. Debug and optimize regex patterns with detailed explanations.
Text Inspector & Lorem Ipsum Generator
- Count characters and words
- Analyze text content
- Generate Lorem Ipsum text
- Customize placeholder content
URL Parser & DNS Lookup
Parse and analyze URLs with detailed component breakdown. Perform DNS lookups and check domain records for comprehensive information.
Utility Tools - Time & Date & Cronjob
- Convert Unix timestamps
- Format dates and times
- Create cron expressions
- Validate cron schedules
Settings - Dark & Light Mode
- Toggle between dark and light themes
- Customize sidebar and tools
- Save settings and preferences
Pricing
One-time payment, lifetime access. All updates are free.
BASIC
$20
- All Features Included
- Free Updates Forever
- Single Device License
- Priority Support
Buy Basic Plan →
Perfect for individual developers
Popular
PRO
$49
- All Features Included
- Free Updates Forever
- Three Device Licenses
- Priority Support
Buy Pro Plan →
For developers who work across multiple devices
TEAM
Customper license
- All Features Included
- Free Updates Forever
- Custom Number of Licenses
- Priority Support
Contact Sales
Need more than 3 licenses? Contact us for custom pricing.
FAQ
Everything you need to know about SelfDevKit