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Image compression doesn’t only mean reducing image size. It’s about image quality, size, compatibility, editability, and speed. Pick wrong compressing technique, and you’ll get blurry logos, photos that fall apart after two edits, and more.
Choosing image compression methods is very crucial, but there’s no single “best method”. A photo for your website, logo for your app, scanned document for legal archive, etc. all need completely different approaches. Everything depends on “What’s in the image?”, “Will it be edited again?”, “Where will it display?”, “Does it need transparency?”, “What’s the file size target?”
This guide gives the exact framework to answer those questions and find out the best way to compress image without losing quality. Let’s start with understanding the difference between two types of image compression methods.
Image Compression: Lossy V/S Lossless Compression
Image compression methods are divided into two categories: lossless compression, and lossy compression. Here is the detailed difference listed based on multiple criteria to get more clear idea about the two compression techniques:
| Basis | Lossy Compression | Lossless Compression |
|---|---|---|
| Definition | It reduces file size by permanently removing unnecessary data, often resulting in lower quality. | It reduces file size by removing only metadata and unnecessary data, preserving original quality. |
| Quality | Data is lost and quality degrades. | No data is lost, and image quality remains identical to original. |
| Reversibility | It can’t be returned to original state. | It can fully be restored. |
| File size | Smaller in sizes | Larger than lossy, but smaller than uncompressed. |
| Common formats | JPEG, WEBP | PNG, RAW, TIFF |
| Pixel change | Visible if overdone | 0% |
| Size reduction | 95%+ smaller | 10-50% smaller |
| Best use cases | Thumbnails, backgrounds, website optimization, etc. | Logos, heavy-text images, professional printing, etc. |
What are the Benefits of Image Compression?
Compressing images helps users in various ways, such as:
- Compressed images reduce total page weight resulting in faster website load time.
- Reducing image size results in less disk and memory space occupancy.
- Smaller files require less data, benefiting users on slow mobile data connection.
- Faster image loading results in enhanced and smooth user experience.
- Search engine like Google prefers fast loading pages more.
- More images can be stored on servers, devices, and cloud storage without hitting capacity.
How Image Compression Impacts Website Performance
Images are the #1 reason websites feel slow. A single uncompressed image can undo every other optimization you have done. If you compress image right, you don’t just save bandwidth, you improve SEO, conversion rate, user trust, and more. Here’s how image compression impacts performance of your website:
- Mobile users who rely on slower or limited data connection benefits more with compressed images.
- Users abandon sites which takes longer to load. Compressed images help in providing faster experience.
- Faster load time improves performance metrics such as LCP, which helps with Google ranking.
- Compressing images reduces total bytes transferred, which makes browsers to deliver content faster.
Match Format to Image Content
The pixel inside image decides the format more than anything. You should always choose the format according to image content.
- Photographers: Real World, Skies, Gradients, etc.
Use: AVIF Q70, WEBP Q80-90, or JPEG Q80-85
- Logos, Icons, Charts, Line Art, Text, etc.
Use: WEBP Lossless or PNG
- Screenshots with Mixed Content
Use: WEBP Q90, PNG if <600px wide or AVIF if large.
- Images with Transparency
Use: WEBP Lossless, AVIF, and PNG
- Animations
Use: WEBP, AVIF or MP4
- High-Quality Print or Archiving
Use: RAW or TIFF
Common Image Compression Challenges
Key challenges in image compression incorporates the following:
- Saving JPEG as PNG to improve quality, but that doesn’t work.
- Using 100 Quality for web. JPEG Q100 is 8x bigger than Q85.
- Compressing a single image multiple times.
- Failing to provide optimized image variants for different screen sizes.
- Aggressive compression can alter color accuracy which is important for design and photography.
- Encountering errors like “Thumbnails Preview Not Showing in Windows 10”.
What if Choosing Wrong Compression Method Destroyed Your Images?
Image compression using wrong technique can damage your image and make it blurry, pixilated, distorted, etc. Frustrating right? But you can get back your images to their original state using a smart Photo Repair software designed to rebuild your images.
One such reliable software is Kernel Photo Repair. You can add multiple images at a time and repair them without worrying about their size. It works irrespective of the reasons for corruption, damage, or loss, and it has the ability to recover lost or deleted media files from USB drive and from any other storage device. You can even try the software without purchasing it using free trial.
Final Thought: Choosing Best Image Compression Method for Your Needs
Choosing the right image compression methods comes down to purpose not preference. It has a significant impact on your website’s performance. It can either improve user engagement or ruin it completely. But with the help of this guide, you can choose the best technique easily. However, if anything goes wrong with your images, Kernel Photo Repair tool can help in such situation.
Frequently Asked Questions
A. AVIF Q60 for photo, WEBP Lossless for graphics.
A. You might have used JPEG format, whereas logos need PNG or WEBP Lossless.
A. The best format for email attachments is JPEG Q70-80, 600px wide.
