If you are getting into the blogging industry, then you must know the value of optimization for your blog. And image plays a key role in it, especially if images are a central part of your blog content strategy.
Why do we need to optimize images?If images and title are properly formatted relevant to the content, then the image has a chance at showing up for a related image search in search engines. And you'll get more visitors.
It plays a key role in loading speed of your site. And, if your site takes much time, you'll may have to compromise with user experience. Which means, if your visitors don't have speed network, they may avoid visiting your site.
If you're using a hosting service for your blog (like WordPress), your server may have trouble with loading an image.
If you want your site to load at a reasonable speed for your visitors, you'll need to optimize your images.
So, here is a question. How To Optimize/Compress An Image For Free ?
Here are top 5 free online image optimizer for your blog/website.
It uses smart lossy compression techniques (File size is compressed, the picture quality remains the same) to reduce the file size.Optimizilla is One of the best free online image optimizer for both JPEG and PNG images. We are currently using this service for HowToBlog. It allows to upload up to 20 images in a single queue.
You can Use the slider (Just Click thumbnails in the queue) to control the compression level and mouse/gestures to compare images. You can download all of the compressed files into a .zip file with a single click. And All data submitted/uploaded is deleted after 1 hour (According to Optimizilla).
2. TinyPNG:It also uses lossy compression techniques. It comes with two versions pro and free. With the Pro version, you can Drag and drop more than 20 images at once and Upgrade 5 MB to 25MB file size limit.
With TinyPNG you can optimize JPEG and PNG images, with drag and drop feature, you can reduce file size by more than 70%, but you won't be able to control the compression.
3. Compressor.io:Cool thing about this service is that it allows you to compare optimized and original image. You can export compressed images using Dropbox or Google Drive. It supports the compression of 4 image formats JPEG, PNG, GIF and SVG
4. Kraken.io:It provides simple drag & drop option you can download all of the compressed files into a .zip file with a single click.
It has two versions. The free version has a file size limit of 1MB. Optimized images are available for download for 12 hours. Kraken PRO users can access their images at any time via Kraken Cloud Storage.
This site provides many tools besides image optimization.
With image delivery tool, you can see whether blog posts or websites are well-optimized or not. It will check duplicate images and will also suggest you to further optimize your site.