DocQR Lite - PDF & QR Tools

Looking for a lightweight, fast, and secure all-in-one utility app? DocQR Lite brings together essential daily tools—from PDF management and invoice creation to QR scanning and unit conversion—all in one compact package that works 100% offline.

Save phone storage, protect your battery, and maximize your daily productivity without needing an internet connection or sign-up!

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📄 1. PDF Utilities
- Merge PDFs: Combine multiple PDF documents into a single file.
- Split & Extract: Extract specific pages or split large PDFs easily.
- Compress PDF: Reduce file size while preserving document quality.
- Built-in PDF Viewer: Smooth navigation, zoom, and text search.

🧾 2. Invoice Generator
- Instant Invoices: Create professional PDF invoices in seconds.
- Custom Branding: Add your business details, client info, and line items.
- Smart Calculations: Automatic subtotal, tax, discount, and grand total calculations.
- QR Code Stamps: Embed custom text or payment URLs directly into your invoice.
- Multi-Currency Support: Full support for standard global currencies ($, €, £, ₹, A$).
- Professional Templates: Choose from Minimal, Modern, or Professional themes.

🔍 3. QR Code & Barcode Tools
- Instant Scanner: Scan any QR code or barcode using your camera.
- QR Generator: Convert text, URLs, or contact info into custom QR codes.
- Save & Share: Export generated QR codes as images instantly.

🧮 4. Smart Calculators
- Basic & Scientific: Features sin, cos, tan, log, ln, sqrt, parentheses, and operator precedence.
- History Log: Keep track of past calculations.
- Date Calculator: Find differences between dates, calculate days of the week, or quick-add durations.

🔄 5. Unit Converter
Convert units seamlessly across 8 essential categories:
- Length: Meter, kilometer, mile, foot, inch, etc.
- Weight: Kilogram, gram, pound, ounce, ton.
- Temperature: Celsius, Fahrenheit, Kelvin.
- Data Storage: Byte, KB, MB, GB, TB.
- Other Categories: Area, Volume, Speed, and Time.

🖼️ 6. Image & Text Tools
- Image to PDF: Convert photos into clean, professional PDF documents.
- Image Compressor: Drastically reduce image size using a precise quality slider.
- Text to PDF: Convert notes and text into ready-to-share PDF documents.
- Text Formatting: Case conversion (UPPERCASE, lowercase, Title Case) and whitespace cleaner.

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⚡ Why Choose DocQR Lite?

- Ultra-Small App Size: Uses minimal storage space on your device.
- Battery-Friendly: Efficient design with zero heavy background processes.
- 100% Offline & Private: No internet required, no data leaves your device.
- No Sign-Up Needed: Open the app and get to work immediately.
- Dark Mode Included: Reduce eye strain and save OLED screen battery.
- Clean & Elegant UI: Simple, focused design optimized for all devices, including low-RAM phones.

Stop downloading dozens of separate apps. Save space, save time, and streamline your workflow with DocQR Lite!