Whether you're sending files via email, uploading to a web portal, or publishing to social media, file size affects speed, deliverability, and user experience. Here are ten practical tips to optimize your files every time.
1. Choose the Right Format First Before compressing, make sure you're using the most efficient format. For web photos, WebP beats JPEG and PNG. For PDFs with mostly text, normal compression preserves quality. Picking the wrong format adds unnecessary size before you even begin.
2. Set a Realistic Target Size Different contexts have different requirements. Email attachments typically need to stay under 10 MB. WhatsApp limits photos to around 16 MB. Many government and university portals cap uploads at 2–5 MB. Know your target before compressing.
3. Resize Before You Compress A 6000 × 4000 pixel photo doesn't need to be that large if it's going on a website or into an email. Resize images to their display dimensions first, then compress. This makes a massive difference in file size.
4. Use Batch Compression If you have multiple files, compress them all at once. CompressAndGo handles up to 10 files simultaneously, applying the right compression automatically to each one.
5. Don't Over-Compress More compression isn't always better. Compressing the same image multiple times with lossy compression (like JPEG) introduces progressive quality degradation. Compress once from the original source file.
6. Strip Unnecessary Metadata Images and PDFs often carry hidden metadata — GPS coordinates, camera settings, author names, software information. This data adds bytes and can be a privacy concern. CompressAndGo strips PDF metadata automatically.
7. Use the Target KB Feature Instead of guessing, set a specific target. CompressAndGo lets you dial in exactly the file size you need — from 10 KB to 500 KB — and the AI engine does the rest.
8. Test the Output After compression, open the file and check it looks and reads correctly. A compressed PDF should render all pages properly; a compressed image should look clean at its intended display size.
9. Keep Originals Always preserve your original uncompressed files. Compression is sometimes destructive, and you may need to go back to the source for future use.
10. Use a Private Compressor If your files are sensitive, use a tool that processes everything locally. CompressAndGo never uploads your files — making it the only free image compressor and PDF compression tool that is also a true private file compressor.
