Keyboard Tester
Workspace
This workspace processes the content directly in your browser.
Formatting, decoding, validation, and common file work stay local whenever possible, then continue in the same result area for copy, download, or the next step.
Paste content, choose a file, or load a sample first.
The content stays in the local browser by default.
After processing, copy, download, or continue into a related workflow.
Focus area
The key map below will light up and the latest event data will update in real time.
Result
Use this page to check stuck keys, modifier combinations, and browser key codes.
Test your keyboard directly in the browser, highlight pressed keys and inspect the latest key event data.
Common tasks
- Check stuck or dead keys
- See browser key codes for shortcuts
- Verify modifier key combinations
A practical technical article on choosing image formats, resizing before compression, preserving transparency, and preparing batches for upload.
EXIF Metadata Explained: GPS, Orientation, Camera Tags, and PrivacyA technical article on what EXIF metadata can reveal, why GPS and orientation fields matter, and how to review images before publishing.
How PDF Files Work: Pages, Objects, Text Layers, and MergingA practical explanation of how PDF files are structured, what really happens when PDFs are merged, and which details should be checked before sharing a final document.
Key Questions
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