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You're in good company:
Zamzar has converted and compressed over 510 million files since 2006
Resize to different file sizes
You can use Zamzar to process a wide range of different files - just click on a format to get started:
Why resize your image to 100kb
Large image files create practical challenges that can disrupt your daily workflow. When images are too big, they fail to upload on web forms, bounce back from email servers, or get rejected by platforms with strict file size limits. They also slow down websites, consume bandwidth unnecessarily, and quickly fill up storage space on servers and cloud services. For professionals handling multiple images regularly, these issues translate into wasted time and missed deadlines.
Resizing images to 100KB offers an excellent compromise between file size and image quality. You'll maintain sharp, detailed visuals whilst ensuring your files are compatible with most platforms and services. This size works particularly well for e-commerce sellers uploading product images to online marketplaces, content creators preparing featured images for blog posts, designers sharing concept visuals with clients, or property professionals uploading high-quality listings to real estate portals. Travel bloggers often resize photos to 100KB for gallery pages that need to load quickly, and course creators use this size for instructional images in online learning modules that must be accessible on various devices and connection speeds.
Zamzar's online image resizer makes it simple to compress and resize your images to 100KB. Upload your file, and we'll optimise it to meet your target size. You can then download your resized image ready for use wherever you need it.
Privacy
We realise that privacy matters, and so we have created a detailed privacy policy that outlines what we do with your files and personal information. That policy can be read here.
Quick
We’re always trying to improve the file conversion speeds. That’s why we've recently added real-time conversion, which means you no longer need to enter your email to get your converted file.
Very Experienced
We pride ourselves on being the best online file-conversion site there is, and because we’ve got over 15 years of experience, we’re confident we know what our customers need.
High Quality
Zamzar prides itself on the highest-quality file conversion, so you won’t be able to tell the difference between your uploaded file and your newly converted file.