If you're a professional photographer who assumed that slapping an obtrusive watermark across your work would protect it from being misused online, Google has some bad news for you. A team of researchers from the company has found a way to automatically and perfectly erase the watermarks used by popular stock photography organisations.

Depending on your setup, it may be a challenge to get your site working fast enough when you post lots of media. I've experienced themes before that didn't respond well to multiple embedded Youtube videos, for example. But if your site is heavy on the images, you'll definitely want to look at ThemeIsle's advice.

Stock image company Shutterstock has released a Chrome browser extension that brings up a randomised photo from its collection of 65 million images every time you open a new tab. Here's how the Shutterstock Tab works.

We all know what that a JPEG is an image file and a GIF is mainly used for animations but how much do we know about what the difference between the range of image formats that are in use today? Here's a cheat sheet can help us learn more about this topic.

A digital photograph is ultimately nothing more than a series of numerical colour values, which makes it ideal for presentation as a spreadsheet. The Pixel Spreadsheet service does just that, letting you upload a picture and then converting it into a downloadable Excel spreadsheet.

Dear Lifehacker, My wife and I have a digital camera, and we love taking pictures. At last count, I have 20GB of pictures on a hard drive on my main computer. I have these backed up to a home server, but I am still worried. What if both hard drives fail, or there is a fire or a power surge?I have investigated cloud hosting, but this gets expensive at larger amounts of storage (I'd want 100GB to be safe). How should I back up my memories for peace of mind? Thanks, Happy Snapper

Want to fill your pictures with explosions, guns and saturated colours? Then Bayifier -- a web site which makes your photos look like they were shot by blockbuster director Michael Bay -- might be just the thing. Sure, it's not a 'proper' online image editor, but it'll help Friday afternoon pass more quickly.

Your increasingly digital lifestyle has left your analogue media collecting dust. Save it from obsolescence and digitise your life.

Free web service CMYK Converter, as its name implies, converts your image files between RGB and CMYK colour models with a simple three-step process.

Already bought a book and don't want to buy it again to read on a portable device (like the iPad)? Consider transforming an old digital camera into a DIY digital scanner for less than $US20.

There's nothing like a clear blue sky in real life, but it doesn't create for the most interesting photos - Weblog MakeUseOf has a nice tutorial for easily creating clouds to spice up the skies.

Windows: If you're not about to manually convert that pile of images in front of you but you've found the batch converters you've tried to be lacking, free and portable Photo Magician offers both fine tweaking and drag-and-drop simplicity.

Photos still look great for web-viewing even when they're at resolutions well below the optimal size for printing. Resize and resample your images down to a more reasonable size at Web Resizer.

Aviary Phoenix, a really powerful online image editor, used to charge $US25 per year for private online image saving and other select features. As of yesterday, though, the Phoenix editor's gone entirely free.

Windows: If you want to print a large image off your home printer and be able to reassemble it, it takes some enormous photo editing cut 'n' crop patience — or a copy of Easy Poster Printer.

If you've been having trouble finding free or Creative Common-licensed photos for use in your projects, Sprixi filters out the fluff to help you find the images you really want.

You might remember when we shared a cool way to make light-based art with an LED flashlight and a long camera exposure. Take it a step further by creating not just a light art picture, but an animated movie.

Windows only: Photo gallery application PhotoJoy turns your digital pictures into collages, desktop widgets or 3D screensavers with just a few clicks. It's the type of application that your mum would like.

Instructables user DHagen was sick of feeding coins into a public copy machine, wanted quality copies, but didn't want to spend much cash to get his own photocopier or scanner, so he did what any DIYer with a digital camera would do.