FeiLv
Lightweight browser utilities, anywhere, anytime.
Built for Modern Browsers
Streamlined Workflows
Developer-friendly interfaces designed for rapid repetitive workflows.
Current Focus
Multilingual Support
Complete Chinese and English support, accessible anywhere.
Design Goal
Minimal Design
Distraction-free interface, focused on work efficiency.
All Tools
Pick a feature, get started.
Get your public IPv4 / IPv6 and lookup geo/network details.
Convert values between YAML, TOML, and JSON with synchronized editors.
A fully featured timer with custom durations and local save support.
A visual and audible metronome with tap tempo and subdivisions.
Quick case conversion, space removal, and other text operations.
Convert HTML to Markdown format with code block and list support.
Build cron expressions visually and understand every field instantly.
Toggle read/write/execute bits and get symbolic + octal modes clearly.
Generate secure passwords with controllable character sets and copy instantly.
Generate SSH key pairs fully in-browser with Ed25519 and RSA options.
Translate between docker run commands and docker-compose YAML definitions.
Generate Apache .htpasswd entries and matching .htaccess snippets quickly.
Assemble realistic browser User-Agent strings for desktop and mobile testing.
Pick one option from your custom list with animation and useful presets.
Encode and decode URL, Base64, and more with instant, side-by-side results.
Decode common web encodings quickly when troubleshooting logs and payloads.
Run FFmpeg in the browser for clipping, remuxing, and quick media transforms.
Generate and scan QR codes directly in your browser.
Read Stable Diffusion WebUI / ComfyUI prompts, options, and raw PNG text chunks.
Remove shadows from white-background document photos using AI image processing.
Remove handwritten markings from printed document photos using color detection and stroke width analysis