JB Toolbox
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About this app
Diagnose networks and use everyday utilities in one app with JB Toolbox. Test connections with Ping, IP, DNS, TCP port checks and subnet calculations, then use QR codes, checksums and converters when you need them.
Check your connection and troubleshoot networks:
• View public and local IP addresses
• Run Ping tests and review latency, packet loss, and stability
• Scan a LAN for devices on your local network
• Look up IP addresses for a domain with DNS
• Test whether a TCP port is open
• Inspect SSL certificate validity, expiry dates, and TLS security
• Calculate subnet ranges, masks, broadcasts, and usable hosts
Create, scan, and convert:
• Generate QR codes for text, URLs, Wi-Fi, and contacts
• Create barcodes in multiple formats, then save or share them
• Scan QR codes and barcodes with the camera or an image
• Count characters, words, and lines, or change text case
• Calculate SHA-256, SHA-384, SHA-512, SHA-1, MD5, and CRC32 for text or files, then compare an expected checksum
• Generate passwords with length and character options
• Convert length, mass, area, volume, temperature, speed, data, time, and pressure
• Convert Unix timestamps in seconds or milliseconds to dates and times, and convert between time zones
Hash and checksum calculations run only on your device. Entered text, selected files, file paths, and results are not added to History.
Add tools to favorites. For tools that support History, restore previous inputs, copy details, or export history as CSV.
Need a quick break or a simple group decision? Play Sudoku with notes, undo, pause, and autosave, or use the Ladder Game to match participants with results.
JB Toolbox is designed for IT staff, developers, technicians, students, and anyone who wants practical tools in one clear interface.
Date and time conversions run on your device. Inputs and results are not saved to History.
Supports 14 interface languages. Choose light mode, dark mode, or follow your device settings.
Check your connection and troubleshoot networks:
• View public and local IP addresses
• Run Ping tests and review latency, packet loss, and stability
• Scan a LAN for devices on your local network
• Look up IP addresses for a domain with DNS
• Test whether a TCP port is open
• Inspect SSL certificate validity, expiry dates, and TLS security
• Calculate subnet ranges, masks, broadcasts, and usable hosts
Create, scan, and convert:
• Generate QR codes for text, URLs, Wi-Fi, and contacts
• Create barcodes in multiple formats, then save or share them
• Scan QR codes and barcodes with the camera or an image
• Count characters, words, and lines, or change text case
• Calculate SHA-256, SHA-384, SHA-512, SHA-1, MD5, and CRC32 for text or files, then compare an expected checksum
• Generate passwords with length and character options
• Convert length, mass, area, volume, temperature, speed, data, time, and pressure
• Convert Unix timestamps in seconds or milliseconds to dates and times, and convert between time zones
Hash and checksum calculations run only on your device. Entered text, selected files, file paths, and results are not added to History.
Add tools to favorites. For tools that support History, restore previous inputs, copy details, or export history as CSV.
Need a quick break or a simple group decision? Play Sudoku with notes, undo, pause, and autosave, or use the Ladder Game to match participants with results.
JB Toolbox is designed for IT staff, developers, technicians, students, and anyone who wants practical tools in one clear interface.
Date and time conversions run on your device. Inputs and results are not saved to History.
Supports 14 interface languages. Choose light mode, dark mode, or follow your device settings.
Network diagnostics, QR codes, checksums and everyday tools in one app.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
- No data shared with third partiesLearn more about how developers declare sharing
- No data collectedLearn more about how developers declare collection
What’s new
- Added light and dark modes, with an option to follow device settings.
- Added Traditional Chinese, Indonesian, Vietnamese, and Italian.
- Improved language selection and screen layout.
- Added Traditional Chinese, Indonesian, Vietnamese, and Italian.
- Improved language selection and screen layout.
