When we have high speed Internet channels now in many parts of the world we never think of how much data is being transferred, uploaded or shared over the World Wide Web each day. When the era of digital photo and image scanners stepped in to this game with millions of people wanting to share their scans or pictures, this process of exchanging digital images over the Internet had to be optimized.
While digital images can be vector or raster type or created with fixed resolution, the most considerable digital image flow in the networks is registered with scanned documents and pictures taken with simple cameras. What image compressor software is able to offer to us is how to reduce the file space of the digital image. However, it is important to know that there are several types and ways of compressing the image, and the image compressor software using the most advanced and breakthrough methods will be the winner in this competition, offering the best image quality/image file size ratio. Of course, the compression of an image may take place in photo camera right after it had been taken, and be saved in JPEG format.
More to say, when you see a .jpeg file, you can say for sure that the digital image had been already compressed – if you would take the original photograph or a document scan-copy in acquired in RGB mode, in 24-bit color with mo compression – the file size would be ~ 50-100mb per page. JPEG files are usually 2mb –6mb average. There is one “if” to image compressor results – the higher the level of compression, the lower the image quality, or the image may contain certain artifacts or noises.
To make it finally clear, there are lossy and lossless compression algorithms known for various image file formats. Like we said above, the higher the level of compression, the poorer is the quality of the digital document – this is true for lossy compression algorithms used in JPEG file format. On the contrary, PNG file format uses some lossless compression algorithms, and it means that no matter the allowed compression ratio, practically no information is lost when the compressed document is saved.
Anyways, many of us still use image resolution reduction to get the “light” scanned documents or photographs instead of even trying to use the up-to-date technologies, an image compressor that will help you do the job easy and leave the valuable data intact, saving the document as a readable and good for further exchange and transfer. You may argue that advanced image compressors are used within companies are expensive to the end user.
“Objection, your honor!” – there is one product out there which delivers the so needed functionality of a document image compressor at a fair price. Cognitive Technologies group of companies had been able to create an image compressor available to any end user. Based on Cognitive PDF/A library, the software product is called Compressimo. It creates compact PDF/A files from document scan copies. It is possible to try Compressimo image compressor by following this link for absolutely free, fully functional demo version limited only by a 30-day trial period: demo versions