Web Demos

BARCODE READER SDK DEMO

Explore the flexibe barcode reading settings to optimize for your specific usage scenario.

WEB TWAIN SDK DEMO

Try the most popular web scanner features: scan images, import local images and PDF files, edit, save to local, upload to database, and etc.

BARCODE READER JAVASCRIPT DEMO

Transform any camera-equipped devices into real-time, browser-based barcode and QR code scanners.

MRZ SCANNER WEB DEMO

Detects the machine-readable zone of a passport, scans the text, and parses into human-readable data.

APP STORE DEMOS

BARCODE READER SDK FOR IOS

BARCODE READER SDK FOR ANDROID

VIEW MORE DEMOS >
Dev Center
Table of contents

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FAQ - JavaScript

  1. How to get a copy of (Dynamsoft Barcode Reader) Dbr JS deployable files (source code, etc.) ?

  2. How to use the JavaScript SDK in offline mode?

  3. What are the server requirements for Dbr JS deployment?

  4. What are the pros and cons of using the CDN?

  5. What are the differences between the compact edition and the full edition?

  6. Is HTTPS absolutely required?

  7. When to use onFrameRead and when to use onUniqueRead?

  8. Do we have to call loadWasm proactively?

  9. What are the differences between updateScanSettings/updateVideoSettings/updateRuntimeSettings?

  10. What are the different ways to customize the UI?

  11. How to get the logs for the JavaScript SDK?

  12. How to upgrade from an old to new version?

  13. How to change the domain binding of your product key?

  14. When is singleFrameMode enabled?

  15. How to get intermediate result images?

  16. How to read an inverted image?

  17. How to read barcodes from existing files?

  18. What file/image formats are supported when reading barcodes from files in local memory?

  19. How to scan the barcode on a US Driver’s License and get the first name, last name, DOB, etc.?

  20. How to add/remove a “beep” sound once a barcode is found?

  21. What is the size of the JavaScript SDK (.wasm)?

  22. How to check the version of the JavaScript SDK I am currently using?

  23. How to stop the camera stream from opening right away after DBR JS demo is loaded? How can you enable the camera on the click of a button?

  24. What is the difference between the BarcodeReader class and the BarcodeScanner class? Can they be used interchangeably?

  25. Why are newline characters not being rendered when displaying the barcode results in a textbox?

  26. How to resolve the expected magic word error that occurs when using the JavaScript SDK?

  27. What are the general troubleshooting steps if an image fails to decode with the JavaScript SDK?

  28. What are the differences between the ‘speed’, ‘coverage’, ‘balance’, and ‘single’ runtime templates?

  29. How to avoid incorrect barcode results?

  30. How does license tracking work with the three standard licensing options - Per Scan, Per Device, Per Concurrent Device?

  31. When is a new license required in per-device licensing model?

  32. How to get rid of the delay when opening the camera?

  33. How can I hide the laser bar and Dynamsoft message in the default UI of the BarcodeScanner?

This page is compatible for:

Version 7.5.0

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