Available
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AI Assistant AI Prompt Optimizer
Optimize AI prompts to improve response quality. Essential for lazy users.
Structured Optimization Template Library One-Click Copy Multi-Model Support
ONLINE TOOLS
Online Tools
35+ curated tools for AI assistance, lazy workflows, and everyday tasks.
Free / No Installation / Browser-Based / Privacy Safe
30
Tools
6
Categories
🔍
🔥 Popular Searches
Available
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AI Assistant Token Counter
Calculate token count for GPT/Claude models and estimate costs.
Multi-Model Support Real-Time Calculation Cost Estimation Character Count
Available
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AI Assistant Prompt Library
100+ curated prompt templates for writing, coding, analysis scenarios.
Categorized Templates Quick Search Custom Favorites Regular Updates
Available
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AI Assistant ChatGPT History Export
Export ChatGPT conversations to Markdown/JSON, preserve code blocks.
Formatted Export Preserve Code Batch Processing Privacy Safe
Available
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Lazy Tools Screenshot Annotator
Upload screenshots, add arrows, text, highlights. Perfect for communication.
Drag & Drop Preset Styles One-Click Export Multiple Shapes
Available
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Lazy Tools Quick Notes
Quickly capture ideas with auto-save, supports Markdown.
Auto-Save Markdown Full-Text Search Export Backup
Available
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Lazy Tools Clipboard Manager
Track recent copies, quick paste. No more repetitive copying.
History Quick Paste Favorites Categorize
Available
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Lazy Tools Batch File Renamer
Batch rename files with regex and templates. Essential for organization.
Batch Processing Preview Results Undo Operation Regex Support
Available
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Image Image Converter
Convert between PNG, JPG, WebP formats with batch processing
Batch Convert Quality Control Custom Compression
Available
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Image Image Compressor
Smart compression to reduce file size while maintaining quality
Smart Compress Quality Compare Size Preview
Available
✂️
Image Image Cropper
Crop with custom dimensions, aspect ratio lock and free crop
Ratio Lock Free Crop Multiple Presets
Available
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Image Image Filter
Real-time filter preview, adjust brightness, contrast, saturation
Live Preview 20+ Filters Fine Tuning
Coming Soon
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Image Watermark Remover
AI-powered watermark removal, simple and efficient
AI-Driven One-Click Batch Process
Available
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Image Image Encryption
Encrypt images with password, protect privacy, fully local processing
AES Encryption Password Protection Secure & Reliable
Available
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Text JSON Formatter
Format, compress, validate JSON with syntax highlighting
Format & Compress Syntax Validate Highlighting
Available
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Text Base64 Tool
Base64 encode/decode for text and images
Text Encode Image Encode Batch Process
Available
📝
Text Markdown Editor
Real-time Markdown editor with live preview and export
Live Preview GFM Support Export HTML
Available
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Text Text Diff
Visualize text differences with highlighted changes
Visual Compare Highlight Changes Side-by-Side
Available
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Text Regex Tester
Test regular expressions with real-time match feedback
Live Test Match Highlight Common Patterns
Available
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Developer Color Picker
Convert between HEX, RGB, HSL color formats with palette
Format Convert Color Picker Schemes
Available
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Developer UUID Generator
Batch generate UUID/GUID with multiple versions
Batch Generate V1/V4/V5 One-Click Copy
Available
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Developer Timestamp Converter
Convert between Unix timestamp and datetime
Live Convert Multi-Timezone Batch Process
Available
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Developer Hash Calculator
Calculate MD5, SHA1, SHA256 hash values
Multiple Algorithms File Hash Text Hash
Available
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Developer API Tester
Simple HTTP client to test API endpoints
GET/POST Header Config Response Preview
Available
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Developer JSON ⇄ YAML Converter
Convert between JSON and YAML with syntax validation
Bidirectional Convert Syntax Highlighting Error Tips Formatting
Available
📱
Utility QR Code Generator
Generate QR codes for text, links, WiFi, etc.
Multiple Types Custom Style HD Download
Available
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Utility Base Converter
Convert between binary, octal, decimal, hexadecimal
Four Bases Live Convert Batch Process
Available
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Utility Unit Converter
Convert length, weight, temperature, time units
Multiple Units Precise Calc Common Presets
Available
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Utility Random Generator
Generate random passwords, numbers, strings
Strong Password Custom Rules Batch Generate
Coming Soon
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Utility URL Shortener
Convert long URLs to short links for easy sharing
One-Click Custom Suffix Analytics
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More Coming Soon
We're constantly developing more practical tools.
If you have suggestions, feel free to contact us.
💡 Tip: All tools run locally in your browser, no data uploaded