ReduceSize.online helps you compress images and PDFs to an exact KB or MB size for online forms, exams, and job applications β directly in your browser.
A simple tool made for students & professionals who need exact file size - no signup, no upload, no data storage.
ReduceSize.online is built by a small independent developer to solve a real problem β resizing photos for online forms where even 1KB extra can cause rejection. This tool is actively maintained and improved based on user feedback.
Welcome to ReduceSize.online, the most advanced tool designed to reduce image size in KB and MB without compromising quality. Whether you are a student applying for government jobs or a professional needing to optimize images for emails, our tool helps you compress JPG, PNG, and JPEG files to your exact required size (e.g., 20KB, 50KB, 100KB) instantly.
Most online compressors only reduce quality by percentage, which makes it hard to hit a specific file size limit. However, ReduceSize allows you to input a specific number (like "50 KB"). Our algorithm automatically adjusts the quality and dimensions to match that target size perfectly. This is crucial for:
Security is our top priority. Unlike other server-side tools, ReduceSize.online works 100% in your browser. This means your personal photos, documents, and signatures never leave your device. No data is uploaded to any server, making it the safest way to compress sensitive documents.
Q: Can I reduce image size to 20 KB exactly?
Yes! Just upload your photo, type "20" in the target size box, and our smart engine will compress it as close to 20 KB as possible without making it blurry.
Q: Does this tool support PDF compression?
Yes, we have a dedicated "PDF" tab where you can reduce the size of scanned PDF documents for easy sharing on WhatsApp or email.
Q: Is this service free?
Absolutely. You can compress unlimited images and PDFs for free. There are no hidden charges or sign-up requirements.
Q: Which formats are supported?
We support all major image formats including JPG, JPEG, PNG, and WEBP, as well as standard PDF documents.