Best Free Barcode or QR Code Image Generator
ZXing QR Code Generator creates a Quick Response code in various sizes for your contact info, URL, SMS, geo location or other text data. For instance, the QR Code of this page's URL is this, readable by a scanner such as ZXing BarcodeScanner on a mobile device, or using ZXing Decoder Online.
GOQR.ME generates QR codes from any text, url, call number, sms or vCard details, with adjustable sizes and options such as margins, colors and correction code. Its QR-Server supports the API and allows you to send a URL to get a QR Code image such as this example.
Best Free Clip Art Library
Openclipart contains more than 30,000 images of clip art that can be used for free for any use. You can check out the most popular clipart of the week, newly added, top 10 downloads and search by category, or even create and upload yours for sharing. See also more choices in this Review.
Best Free Online Diagramming Tool (see also Room Planner / Floor Layout Plan)
Cacoo , a user-friendly drawing tool to create a variety of diagrams, save or export your file in PNG format. A useful stencil is available for easily creating basic shapes, office layout, equipment, network, flowchart and more.
JGraph's draw.io allows you to easily draw diagrams with a range of drag-and-drop stencils, load, save or export them in JPG, PNG or SVG format, and share editing with other users in real time.
Best Free Online GIF Animator
Picasion creates an animated GIF image file comprises up to 10 frames with optional size and speed adjustments. In just a few minutes, you can then post it to the website or save it to your computer. (Review)
Best Free Online Image Converter and Resizer
FixPicture converts all popular picture file formats and camera raw formats to jpg, png, gif, tiff, bmp or pdf formats, and resizes them by a percentage or a specific pixel value with optional rotation and effects.
Best Free Online Image Cropping and Customizing
CutMyPic , 3 simple steps that allow you to quickly upload a picture, cut and customize it, and mail it to a friend or save it to your computer. Image customizing includes rounding corners and adding a shadow with thickness of your choice.
Best Free Online Image Editor
Pixlr Editor , an excellent set of tools that rival many image editors, including drawing, retouching, cropping, resizing, warping, adding text, basic and advanced lighting and color adjustments, numerous filters and layers with blending. Better still, use Pixlr Express for a quick fix or one-click effects. (Review)
Sumo Paint , a powerful tool for creating and editing images with more painting tools than other paint-oriented online image editing programs, supports for layers, blending modes, special filter effects, opacity levels, handy adjustment tools, etc. (Review)
FotoFlexer creates dazzling photo effects in a simple interface with optional fullscreen editing. Supported features include one-click auto fix, red eye removal, resizing and cropping, rotating and flipping, 20 over filtering effects, decorations, animations, layers and more.
Pixlr-o-matic , adding special effects to your photos is as easy as you count one, two, three—snap a photo from your webcam or select one from your computer, then choose a color filter, a lighting effect and a good frame from the many choices included, and save or share your cool-looking photo with friends.
PicMonkey allows you to crop, rotate, resize or sharpen photos, or adjust their exposures and colors, apply effects, do some touch-ups, add text and symbols, and complete photos with frames and textures. A great photo editor with impressive tools and features.
AnyMaking Photo Editor helps you edit an image easily in a few seconds with a set of tools for you to choose: crop or resize image, flip or rotate, add frame, filters, drop shadow, reflection and round corners.
Best Free Online Image Generator
PhotoFunia , select a template from more than 100 fun effects such as billboards, magazines or stamps, upload your photo and click "Go" to create your masterpiece with auto face recognition technology. You can then save it to your computer or share with your friends and family.
FunPhotoBox generates funny pictures from your photos with useful tools, either photo effects, animations, cards, magazine covers or face in hole, choose one then upload your photo, see the result and save it.
3DPackage , a 3d-box graphic creator—just find some photos on your PC to use for the front and sides of the box shot, upload them and in a couple of seconds you'll have your box ready for download in JPG, GIF or PNG format. (Review)
Says-It.com , create your own funny photos and graphics in seals, badges, posters, tickets and other various signs—simply choose a design, type in some text, change colors or outlines, insert your own image, then click Go to get one.
Cool Text , an easy way to generate cool and impressive text logos or buttons without a lot of design work—choose a style, fill up the form with text and adjust the settings, then click the Render button.
Best Free Online Image Optimizer
Optimizilla , upload up to 20 images in one go to shrink them to minimum file sizes suitable for use on websites or sharing with friends. You can preview optimized images and adjust the level of compression before downloading results to your computer.
Best Free Online Image Search (see also Photo Management and Sharing)
TinEye , submit an image to discover the source of the image, where it is being used and check out its modified or higher resolution versions if they exist on the web.
RGBStock.com , a good place to search for high quality and royalty-free photos and choose the ones you like to download. Type a keyword to search for the photos or check out what are the most downloaded photos.
Findicons , browse through a large collection of over 300,000 free icons, search them easily by keywords, and choose one in the size and format you want to download to your computer. You can also convert your icons online or upload an icon pack for sharing.
Best Free Online Image Stitcher
Dermandar offers an easy way to stitch a series of your scenic photographs into one picture—just browse for pictures from your folder, then save an equirectangular image of your panorama, or upload and share your 360-degree or wide-angle interactive picture in the gallery.
Best Free Online Photo Collage
Photovisi , a useful tool to create photo collages, quick and easy—just select a template, add photos, then click save and download.
FotoJet , make a collage of your photos easily with image and text editing tools and a wide range of high quality templates to choose from, either a modern, classic, art or 3D collage, a Facebook cover or post, or a photo card for your birthday, anniversary and more.
Best Free Online Photo Management and Sharing (see also Image Search)
Flickr a popular web service for users to upload their photos, edit and organize their collections and share them with groups and privacy controls. Uploading video is an added feature.
Dropico , an exciting service that allows you to manage and organize your photo collection across social networks, including Facebook, Flickr, Twitter and more, or edit a photo with Pixlr or other editors, all in one place. (Review)
Minus , one of the easiest photo-sharing sites—just drag some photos to the Minus workspace in your browser to upload and you're ready to share your pictures with family, friends and colleagues. It gives you 10 GB of online storage free and allows large files up to 2 GB each. (Review)
Best Free Online Poster / Tiled Printing
Block Posters , create a large-size poster from a small-size image for printing in three simple steps: upload an image, slice it and download the pdf file. You can then print and assemble the pages into a big poster. (Review)
Best Free Online Screen Capture Utility
Kwout , grab a web page and crop an area, post it anywhere or right-click the cropped image to save into your computer. You can resize, add a border or shadow to the image, work easily with a bookmarklet on any browsers with no need to install anything.
Thumbalizr , capture a top screen or full scrolling webpage in seconds—just enter an URL, click thumb it, and download the image in width of your choice. Free sign up for even better quality.
Best Free Online Whiteboard
Board800 , create a unique session to write down ideas or draw diagrams freehand like using any traditional whiteboard, save your work to your computer in png format, or share it with your colleagues or people with whom you wish to collaborate. A session is kept for 90 days.