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Online image compressor

Compress JPG, PNG, and WebP images to smaller file sizes with private browser-based processing.

Resize an image

100% private

Upload an image to start. Processing happens in your browser.

Quick answer

Compress images for forms, websites, emails, and social uploads. Start with a target KB page for the fastest route.

How it works

Compress images for forms, websites, emails, and social uploads. Start with a target KB page for the fastest route.

  1. Upload an image.
  2. Pick a target size.
  3. Process the image.
  4. Download the compressed result.

Tips for the best result

  • JPG and WebP are usually best for photos.
  • PNG is useful for screenshots and transparent graphics.
  • Resizing before compression often preserves better quality.

Why this workflow works

Practical benefits

No signup, watermark, or server upload is required.

The relevant dimensions or file-size target are prefilled.

JPG, PNG, and WebP output options cover common workflows.

Common mistakes to avoid

  • Do not edit the only copy of your image. Keep the original before using this page.
  • Do not judge the result by file size alone. Open the downloaded image and check important details.
  • Do not resize blindly. Check whether the destination needs exact pixels, a file-size limit, a crop, or a specific format.

Example workflows

  • Use this page when you need a practical image workflow rather than a generic editor screen.
  • Follow the visible steps, then use the related tools and guides for the next edit.
  • Verify dimensions, format, and file size before publishing or submitting the image.

Common questions

Frequently asked questions

How do I use online image compressor?

Upload an image. Pick a target size. Process the image. Download the compressed result.

Does ResizeWizard upload my image?

No. Supported images are decoded and processed locally in your browser.

Which output format should I choose?

Use JPG for photographs and broad compatibility, PNG for transparency, or WebP for efficient modern web delivery.

Keep going

Related tools and resources

Continue with connected tools, guides, and pages in this topic cluster.