Tutorial5 min read

7 Common Image Compression Mistakes (And How to Fix Them)

By Image Size Compress Team

Compressing images seems simple, but many people make mistakes that hurt their website speed and image quality. This guide shows you the most common errors and how to avoid them. Let's make your images load fast without looking bad!

Mistake #1: Compressing Images Too Much

We get it - smaller files are better, right? But if you compress too much, your images look blurry and pixelated. This makes your website look unprofessional. The fix is simple: use a quality setting between 75-85%. This gives you small files that still look great. Our tool lets you preview before downloading, so you can see exactly how your image will look.

Mistake #2: Using the Wrong Format

Not all image formats are the same. Using PNG for photos creates huge files. Using JPEG for logos makes them look terrible. Here's the easy rule: use JPEG for photos, PNG for logos and graphics with transparent backgrounds, and WebP when you want the smallest possible files for modern websites. It's that simple!

Mistake #3: Forgetting to Resize First

This is a huge mistake. If your website shows images at 800 pixels wide, don't upload 4000-pixel images! Even compressed, they're still too big. Always resize images to the size you actually need before compressing. This can make files 80% smaller instantly.

Mistake #4: Compressing the Same Image Multiple Times

Every time you compress a JPEG, you lose a little quality. If you keep opening, editing, and saving the same image over and over, it gets worse and worse. The solution: always keep your original files! Compress a fresh copy each time you need a different version.

Mistake #5: Not Testing on Real Devices

Your images might look fine on your computer screen, but what about on phones? What about slow internet connections? Always test your compressed images on actual phones and tablets. Check them on both WiFi and mobile data. This helps you catch quality issues before your visitors see them.

Mistake #6: Ignoring Mobile Users

Most people browse websites on their phones now. Mobile users have smaller screens and slower internet than desktop users. They need smaller, lighter images. If you only optimize for desktop, you're making mobile users wait too long. Compress your images extra well, and mobile users will thank you with faster loads.

Mistake #7: Not Compressing at All

The biggest mistake? Not compressing images at all! Photos from phones and cameras are massive - often 5-10 MB each. That's way too big for websites. Even basic compression can reduce this to 100-200 KB without visible quality loss. Use our free tool to compress now - it takes seconds and makes a huge difference.

How to Avoid These Mistakes

  • Always keep backup copies of your original images
  • Resize images to the exact size you need before compressing
  • Use the preview feature to check quality before downloading
  • Test compressed images on different devices
  • Choose the right format for each type of image
  • Aim for quality setting of 75-85% for most images

Quick Checklist

Before you upload any image to your website, ask yourself: Is it resized to the right dimensions? Is it compressed? Does it look good when you zoom in? Is it the right format? If you answer yes to all these questions, you're good to go!

Final Thoughts

Image compression doesn't have to be complicated. Avoid these common mistakes, and your website will load faster while looking great. Remember: the goal is finding the sweet spot between file size and quality. Our compression tool makes this easy with instant previews and simple controls. Compress now and see the difference!

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