Autodesk’s Pixlr is an excellent suite of free online image editing tools. Various free applications are available, including an online photo editing suite, and also tools for quickly applying filters, overlays and retro effects. The service even includes an image editor for smartphones.

Below, you will find a brief overview of the most popular applications available.

Pixlr Editor: A quality, free and easy-to-use online photo editing service. Pixlr can handle the majority of basic tasks directly from a Web browser, so you needn’t download software to edit images. You can adjust, filter, crop and perform many other tasks in a familiar (albeit online) Photoshop-esque environment. This service is particularly useful for editing images ready to be used on the Web. A variety of interface languages are available.

Pixlr Express: A no-nonsense Web-based photo editor that lets you quickly apply filters, borders and overlays to photographs. This handy program is ideal for making quick fixes to images, or for applying vintage overlays to achieve a traditional, classic look.

Pixlr O Matic: An entertaining tool that enables you to instantly add retro effects to your photographs. You can either upload an image from your computer or use a Web cam to capture a photograph. Once you’ve finished editing an image, you can easily download the new photograph to your computer. It’s a quick and easy way to achieve impressive photography.

Pixlr Touch Up: A Chrome browser add-on that allows you to spruce up images from the comfort of your Web browser. You can rotate, crop, change contrast, resize and add numerous effects. Better still, you can edit images offline, so you needn’t have an Internet connection to enjoy all this tool has to offer.