nutsopk.blogg.se - Question mark svg

Setting this attribute to an empty string ( alt="") indicates that this image is not a key part of the content (it's decoration or a tracking pixel), and that non-visual browsers may omit it from rendering. For these reasons and others, provide a useful value for alt whenever possible. In these cases, the browser may replace the image with the text in the element's alt attribute. The image is invalid or an unsupported type.The user chooses not to display images (saving bandwidth, privacy reasons).Non-visual browsers (such as those used by people with visual impairments).There are a number of situations in which a browser might not display images, such as: Note: Browsers do not always display images.

SVG remains the recommended format for images that must be drawn accurately at different sizes. WebP is widely supported while AVIF lacks support in Edge.

WebP (Web Picture format) - Excellent choice for both images and animated imagesįormats like WebP and AVIF are recommended as they perform much better than PNG, JPEG, GIF for both still and animated images.

Use for images that must be drawn accurately at different sizes.

SVG (Scalable Vector Graphics) - Vector image format.

PNG (Portable Network Graphics) - Good choice for lossless compression of still images (slightly better quality than JPEG).

JPEG (Joint Photographic Expert Group image) - Good choice for lossy compression of still images (currently the most popular).

GIF (Graphics Interchange Format) - Good choice for simple images and animations.

AVIF (AV1 Image File Format) - Good choice for both images and animated images due to high performance.

APNG (Animated Portable Network Graphics) - Good choice for lossless animation sequences (GIF is less performant).

The image file formats that are most commonly used on the web are: Note: The Image file type and format guide provides comprehensive information about image formats and their web browser support.

Allowing cross-origin use of images and canvas.

HTML table advanced features and accessibility.

From object to iframe - other embedding technologies.

Assessment: Structuring a page of content.