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How-to generate thumbnails for Office documents using Cloudinary and Aspose

Nov 13, 2014 by Nadav Soferman

Many websites and mobile applications with user generated content allow you to upload all kinds of files. Images, PDFs, and Microsoft Office files, such as Word, Excel, and PowerPoint are all common types of uploads.

Web or mobile developers may want to build   applications that allow users to download PDFs, support document previews, or embed image thumbnails of Office files. However, implementing these types of capabilities can be quite a challenging task.

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JPEG-XR conversion with auto browser detection, optimize images for IE users

JPEG-XR Post Sites and apps are including more and more high-quality images. The more you can compress images to reduce their size in bytes, the smaller your bandwidth, the faster your site will load and the happier your users will be. But when compressing images, you need to make sure you maintain high visual quality.

Most web sites and mobile apps use the popular JPEG format to display their images and user uploaded photos. The JPEG format has efficient built-in compression that reduces image size while maintaining a reasonable visual quality. But you can reach much better results using more modern image file formats.

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Reduce size of animated GIFs, automatically convert to WebM and MP4

Animated GIF to WebM and MP4

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.

Animated GIFs are not optimized for captured videos, resulting in large files, heavy bandwidth utilization, slow loading times, and sub-optimal user experience. Also, resizing and manipulating animated GIFs to match the graphic design of your site or app might be a lengthy, cpu-intensive process, as it consists of dozens or even hundreds of frames being manipulated individually.

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How to automatically adapt website images to Retina and HiDPI devices

Jul 24, 2014 by Nadav Soferman

DPR Post Web development was much simpler only a few years ago, when we were building HTML pages that included images and photos, and all elements shared the same resolution units. If for example, you aimed at a standard 1024x768 screen, you knew these were exactly the number of pixels available for displaying HTML elements and images.

In 2010, Apple introduced the iPhone 4 with Retina display. In order to simplify things for developers, the logical screen resolution remained the same as previous iPhone models (640x960) while the physical screen resolution was exactly doubled (1280x1920). This means that if, for example, you embed an image tag in your HTML page with width of 200 pixels and height of 300 pixels, and you display a double-size image of 400x600 pixels, the Retina display shows all pixels of the larger image, resulting in a much clearer visual result and without performing browser-side down-scaling.

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Automatic image moderation, removing adult or inappropriate photos using WebPurify and Cloudinary

Jul 22, 2014 by Nadav Soferman

WebPurify moderation add-on If your web or mobile application involves user-generated content, you may encounter users who upload inappropriate photos or images to your application. These could be images which offend other users - adult content, violent photos, etc. - or images which cause your site to violate laws or regulations.

There are two ways to identify and remove such images: you can either require approval of each image before it is displayed to your users, or display images immediately after upload, and then quickly remove them from your site as soon as a moderator has found them to be inappropriate.

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Image manipulation recipes in the cloud. The Cloudinary Cookbook

Jun 26, 2014 by Nadav Soferman

Cloudinary Cookbook 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 - how to convert animated GIF to WebP and save up to 90% bandwidth

Jun 16, 2014 by Nadav Soferman

Animated WebP 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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Optimize your JPEG images without compromising quality with JPEGmini and Cloudinary

May 29, 2014 by Nadav Soferman

JPEGmini Image optimization is an important step to reducing page load times, improving user experience and reducing bandwidth costs. When using the JPEG image format, which is best used for photos, the most common optimization is controlling the JPEG quality level.

By lowering JPEG quality, say to 90%, 80% or even 50%, you'll get much smaller JPEG files. But will image quality be good enough? JPEG optimization is tricky because if quality is too low, you'll get blurry images, pixelation and visible compression artifacts; if it's too high, images will look good but take too long to load.

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How to overlay text on image easily, pixel perfect and with no CSS/HTML

May 22, 2014 by Nadav Soferman

Dynamic text style

Our customers frequently ask us if we can help them apply dynamic text overlays over images. While a common approach is to add text elements in your pages using HTML elements, CSS or native mobile UI controls, in many cases it's preferable to create images with text layers already included. It makes it simpler to display rich content on different media channels and devices, while ensuring a pixel-perfect result as your graphic designer envisioned.

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Image moderation made easy using cloud-based UI and API

May 16, 2014 by Nadav Soferman

Manual image moderation Many websites and mobile apps today allow their visitors to share their own photos. Users upload their profile images to dating sites, photos of their personal belongings to second hand market websites and real estate billboards. Users share their personal photos on social networks, and upload images to their favorite e-commerce websites, showcasing and reviewing their latest purchases.

It’s sometimes quite important to moderate these images. You might want to keep out offensive content. You may want to actively reject images that do not answer your website’s needs, for example, make sure there are visible faces in profile images, or that only photos of your brand appear on a shared marketing campaign. You may also want to make sure that photos are of high enough quality before making them available on your website.

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