Best Free Image Optimizer Tools (2025 Review & Comparison)

Published: July 2025 | by AllFreeToolsOnline

If you're looking to speed up your website, compressing images is a great place to start. The good news? You don't need paid software. In this post, we've reviewed and compared the best free image optimizer tools available in 2025 so you can find the right one for your needs.

We compared tools based on:

  • Ease of use
  • Compression quality
  • Supported formats (JPG, PNG, WebP)
  • File size limits
  • Speed and interface

1. Our Tool – Free Online Image Optimizer

Your Image Optimizer offers fast, high-quality compression for JPG, PNG, and WebP formats with a clean, ad-free interface.

Pros: No signup, 100% free, clean UI, fast, no watermark
Cons: Newer tool (but growing fast)

Try it here: Compress your first image →

2. TinyPNG

TinyPNG is one of the most popular tools and delivers solid results with PNG and JPG files.

Pros: Excellent compression quality, easy to use
Cons: File size limit (5MB), no WebP support

3. ImageRecycle

ImageRecycle is a useful tool for PDF, JPG, PNG, and GIF formats. Offers a free trial and API.

Pros: Supports PDF, good bulk compression
Cons: Limited free usage, older UI

4. CompressJPEG & CompressPNG

CompressJPEG and CompressPNG are fast and reliable for one-off compressions.

Pros: Simple interface, quick
Cons: Ads on page, no WebP support

5. Squoosh by Google

Squoosh is an advanced, browser-based tool by Google that lets you fine-tune compression settings and preview quality differences.

Pros: Advanced options, high control
Cons: May be overkill for beginners

Conclusion: Which One Should You Use?

If you want speed, simplicity, and high-quality compression with zero cost or login needed, try our Free Online Image Optimizer. It's especially great for bloggers, developers, marketers, and anyone needing fast image compression for SEO.

Tool Supports WebP Signup Needed Free Plan Watermark?
Our Tool Yes No Unlimited No
TinyPNG No No Up to 5MB No
ImageRecycle Yes Yes Limited No
CompressJPEG No No Yes No
Squoosh Yes No Yes No

Try it now: Optimize Your First Image for Free