Cloudinary Blog

Blog posts of 'PHP' tag
How-to automatically identify similar images using pHash

Photos today can be easily edited by means of resizing, cropping, adjusting the contrast, or changing an image’s format. As a result, new images are created that are similar to the original ones. Websites, web applications and mobile apps that allow user generated content uploads can benefit from identifying similar images.

If your site allows users to upload images, they can also upload various processed or manipulated versions of the same image. As described above, while the versions are not exactly identical, they are quite similar.

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Animated GIF? Convert to WebM or MP4 | Cloudinary Blog

Short animated GIF-based video sequences seem to be spreading like wildfire around the web.

Media and news sites display short video segments, social apps allow their users to share animated GIFs with their friends, and while the dated animated GIF format is very useful for this purpose, it has one significant disadvantage - its huge file size.

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Image manipulation recipes in the cloud

How do you crop an image to a custom shape? How do you add a shadow effect to an image with transparency? How do you add text overlay to an image without using HTML?

If you build or maintain a website with a lot of images, you've probably had many questions like these. Most developers who work with images have scripts or tools that can achieve dozens if not hundreds of image manipulations - from basics like crop and resize, to advanced stuff like shadow and transparency, watermarks, face detection, etc. But how do you mix and match these manipulations correctly to solve a problem or achieve a certain effect?

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Animated WebP: convert animated GIF to WebP on-the-fly

Fashion isn't something you'd expect to repeat itself in the technology world - technology advances quickly and hardly ever circles back. But where animated GIFs are involved, it seems like the 90s are here again. Animated GIFs are everywhere, and not only on strange, cheezy web sites - they've become mainstream. You now see short videos shared and played as animated GIFs in reputed sites such as Gawker and TechCrunch.

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Central control for image upload and post-upload actions

There are many options to consider when allowing a user to upload an image to your website or mobile app. You might wish to limit the size and format of the uploaded images. You may want to apply specific manipulations to the images, such as cropping, resizing and adapting the image to your site's look & feel. Beyond that, it's common to create a variety of thumbnails from a newly uploaded image.

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