Web
- Debugging CORS Without Guessing
A CORS error means the browser refused to let a page read a response from a different origin. An origin is the combination of scheme, host, and port: https://example.com and http://example.
- Device Information Guide
Device Information shows a snapshot of what this browser reports about your screen and environment. It does not scan the hardware or detect your exact device model. Compare screen and viewport Open the tool and look for …
- EXIF Remover Guide
EXIF is image metadata that can include capture time, camera details, or GPS location. EXIF Remover redraws an image in a browser canvas and exports new pixels. This generally drops embedded EXIF and other original file …
- HTML Editor Guide
A rich-text editor lets you style text with buttons instead of typing HTML tags. HTML Editor uses your browser’s editable page area and shows its current HTML as text below. The exact tags can differ between …
- HTTP and API Debugging
An HTTP request asks a server to do something; the response tells you what happened from that server’s point of view. Debugging gets easier when you inspect both sides instead of focusing only on the status code.
- HTTP Status Codes Guide
When a browser asks a server for something, the server sends back a status code. The first digit gives you a clue: 2xx is usually a successful response, 4xx often means the request needs attention, and 5xx points to a …
- Image Compressor Guide
Image Compressor shrinks a picture in your browser by redrawing it on a canvas and re-encoding the pixels. Max width and Max height act as ceilings: the image scales down to fit inside both, the aspect ratio is kept, and …
- Image Format Converter Guide
Image Format Converter re-encodes a picture into another format inside your browser. JPEG, PNG and WebP are always offered; AVIF appears only when the browser can actually write it. The Change line shows whether the new …
- Image Metadata Viewer Guide
A photo can carry information besides the picture. That extra information is called metadata. It might include a camera model, a date, or even a location. Image Metadata Viewer reads what is present in a file you choose; …
- JavaScript Playground Guide
A snippet’s return value and its console output are not always the same thing. JavaScript Playground displays both, with an optional Monaco editor for syntax highlighting, bracket matching, code folding and …