Data & Security • QR Code & Barcode Studio

Online QR Code & Barcode Generator & Scanner Tool

Generate high-resolution QR codes and Code 128 barcodes for URLs, Wi-Fi networks, vCards, text payloads, and phone IMEI tracking with instant PNG and SVG export.

100% Client-Side Privacy Universal Hardware Compatibility Zero Server Data Upload Instant Execution • No Install
100% Client-SideExecution Mode
HTML5 • WebAPICore Engine
Zero Data StoredUser Privacy
Free • No InstallAccess Tier

QR Code & Barcode Generator & Scanner

Data & Security

Create high-density barcodes and styled QR codes with customizable colors, sizing, and error correction levels. 100% browser-based.

Ready
Click or Drag & Drop Barcode / QR Image
Supports PNG, JPEG, and WebP camera captures
Quick Actions Ready
Hardware Barcoding: Code 128 barcodes use high-density variable width bars and spaces to encode numeric and alphanumeric character sets with mandatory modulo 103 checksum bytes. In mobile servicing, Code 128 is preferred over QR codes on battery trays and packaging because it can be read accurately by narrow 1D laser barcode wands without camera autofocus latency.

Frequently Asked Questions

What barcode format is used for Android IMEI and serial numbers?

Code 128 is the global telecommunications and manufacturing industry standard for encoding 15-digit Android IMEI numbers, MEID, and hardware serial numbers. It provides high data density and built-in checksum verification.

Does this QR code and barcode tool upload data to external servers?

No. All QR matrix calculations, Reed-Solomon polynomial math, and Code 128 canvas drawing execute 100% locally in your web browser. Sensitive WiFi passwords, contact details, and serial numbers never leave your device.

Which QR error correction level should I select?

For standard website URLs and clean digital screens, Level M (15% restoration) is recommended. If printing on hardware labels, stickers, or packaging subject to scratches or dirt, choose Level H (30% restoration).

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FlashTool Online Utility Suite

Browse All 27 Online Diagnostic Utilities

Complete client-side browser tools for Android phone technicians, hardware testers, and software engineers. Runs 100% locally with zero external uploads.

Display & Touch Diagnostics

Screen Dead Pixel Tester Multi-Touch Digitizer Tester Screen Resolution & DPI Inspector Color Studio & WCAG Contrast Tool

Audio & Sensor Testers

Speaker Stereo Channel Tester Audio Frequency Tone Generator Microphone Input & VU Meter Phone Vibration Motor Tester

Android & Firmware Utilities

ADB & Fastboot Command Builder IMEI Validator & Luhn Checker Firmware Checksum Hash Calculator Battery Fast Charge Calculator WebUSB & Fastboot API Tester

Network & Hardware Diagnostics

IP Address & WebRTC Leak Detector User-Agent & Hardware Inspector Network Latency & Ping Tester Gamepad & USB OTG Controller Tester

Data, Security & Developer Tools

Base64, Hex & ASCII Converter Android KeyCode Keyboard Inspector PIN & Password Entropy Checker UUID & Android ID Token Generator QR Code & Code 128 Barcode Utility JSON Formatter, Validator & Tree Inspector Text & Code Diff Checker Client-Side Image Compressor & EXIF Stripper Unix Epoch Timestamp & Timezone Converter Firmware Download Time Calculator
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