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Caesium 1.7.0

An easy-to-use image compressor

by Mike Williams

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Based on 1 ratings
License: Open Source
Operating Systems: Windows 7 (32 bit), Windows 7 (64 bit), Windows 8, Windows Server, Windows Vista (32 bit), Windows Vista (64 bit), Windows XP
Languages: English, Chinese, French, German, Italian, Portuguese (Brazil), Portuguese (Portugal), Spanish
Software Cost: Free
Date Updated: 29 December 2013
Watchlist: Add download to my watchlist
Downloads To Date: 921
Developer: Matteo Paonessa
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Caesium 1.7.0
An easy-to-use image compressor

Caesium is an easy-to-use tool for compressing JPG, PNG, BMP and WMF images, and saving them in JPG, PNG or BMP. The author claims file sizes can fall by up to 90%, without resulting in any visual quality loss, which could save disk space, make it easier to email or otherwise share images, and (if you're putting them online) improve download times and cut your bandwidth use.

To make all this happen you must first add your target images, either by importing them individually, or asking Caesium to grab an entire folder.

Next, you get to choose various compression options. Caesium can recompress JPEGs with a lower quality setting, for instance (a Preview window helps you choose a level which won't change how the picture looks). And there's an option to resize images according to the rules you specify.

Finally, set an Output folder, click Compress, and that's it: all you have to do is sit back and watch as Caesium goes to work, compressing each target image and reporting whatever saving it's made.

Does it work? The best we can say is: "sometimes". PNG performance was poor on our test files, with a few images dropping in size, but most actually increasing. JPEG results were far better, with typical savings ranging from 30-90%, although there were a small number of exceptions (around 10% of our images remained virtually the same size, or got larger).


Caesium is a quick and easy way to compress JPEG files in particular. The results you'll see will vary according to file type, but it's definitely worth giving the program a try

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Spotlight: Free Full Software

WhatsApp Messenger 2.12.11

Free Full Commercial Software

WhatsApp Messenger is the world's most popular instant messaging app for smartphones.

You can use it to send and receive text and voice messages, photos, videos, even call your friends in other countries, and because it uses your phone's internet connection it might not cost you anything at all (depending on whether you'll pay data charges).

It's easy to set up and use. There's no need to create and remember new account names or pins because it works with your phone number, and uses your regular address book to find and connect you with friends who use WhatsApp already.

You can talk one-to-one or in group chats, and because you're always logged in there's no way to miss messages. Even if your phone is turned off, WhatsApp will save your messages and display them as soon as you're back online.

There's plenty more (location sharing, contact exchange, message broadcasting) and the app is free for a year, currently $0.99/ year afterwards.

Version 2.12.11 brings:

• Links that you share or receive will now include a rich preview. When sending a link, you have the option to not include a rich preview.
• Additional 3D Touch features: You can now quickly Peek and Pop chats.
• Redesigned Settings tab. 
• You can now view all your starred messages across all your chats in Settings — Starred Messages.