Only Gif, Jpeg, Webp and Png image are allowed

When writing here article here at read.cash, the first thing I always do is add a lead image. But when I'm trying to upload an image an error occured saying "only gif, jpeg, webp and png images are allowed".

Is this another bug? Or read.cash is up to something new. Well, lets just wait until thing clear out. I'm just gonna make of this error as a topic of this article.

So what are gif, jpeg, webp and png images? What are the differences?

Gif image

A GIF for image files is a lossless format that supports both animated and static images.

Until PNG became a viable option, it was the standard for 8-bit colour images on the internet. You may have seen them used in email signatures often.

Several images or frames merged into a single file are animated GIFs. To produce fast, low-file-size animations, they are shown in sequence with varying frame rates. By default, GIFs end in the last frame, though looping is now more commonly seen.

GIFs, often used as emotive reactions, are common on blogs, social media, and instant messaging apps.

GIF stands for Graphics Interchange Format, and was created on June 15, 1987, by Steve Wilhite of CompuServe, the first major commercial online service provider in the United States.

Webp image

WebP is a modern image format for images on the web which provides superior lossless and lossy compression. Webmasters and web developers may use WebP to produce smaller, richer pictures that make the web faster.

Compared with PNGs, WebP lossless images are 26 percent smaller in size. WebP lossy images at an equivalent SSIM quality index are 25-34% smaller than comparable JPEG images.

Transparency (also known as alpha channel) is provided by Lossless WebP at a cost of just 22 percent extra bytes. Lossy WebP also supports transparency for cases where lossy RGB compression is appropriate, usually offering 3 times smaller file sizes compared to PNG.

Jpeg image

In digital images, a JPEG is a generic lossy compression mechanism. To render the files smaller in size, digital cameras compress raw photos as JPEG images. For photo storage, it is the most common file format.

JPEGs have become common because, compared to older formats such as Bitmap, they save more storage space.

JPEG stands for Joint Photographic Experts Group. The JPEG file format was submitted and approved in 1992. It has been around since the early days of the internet.

Any of the data from the original image is discarded to decrease the file size when you save an image as a JPEG.

JPEG compression will reduce images down to just about 10 percent of their uncompressed file size with very little loss of perceptible quality, since the human eye is not that great at seeing many brightness differences over a small area.

The JPEG compression format compares every 8 by 8 pixel block that makes up the image to 64 standard patterns in a linear combination.

This then determines how much weight each of those 64 patterns adds to the 8 by 8 pixel block. The higher frequency, more checkerboard-like, patterns lower their respective weights by a quantity that depends on the quality setting of the JPEG. A smaller file size results in this.

The greater the compression rate, the more blurred the picture becomes.

Png image

The Portable Network Graphic (PNG) file format is ideal for digital art (flat images, logos, icons, etc.), and uses 24-bit color as a foundation. The ability to use a transparency channel increases the versatility of this file type.

The png was created in December 1994 and has been stable since March 1995. Since then, the specification has become much more readable and has gained valuable tutorial and developer information.

Takeaway

Gif, jpeg and png image format are different. I still don't know if this format made the error on read.cash. But one thing is for sure, only the jpeg file format can't be uploaded as a lead image or anything related to pictures on read.cash as of now.

You can always find pictures with gif, webp and png file formaton the internet to use for your articles or convert your jpeg into those three above mentioned.

I used https://jpg2png.com/ to convert jpeg to png.

Hope this article helped you. Happy writing.