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Utilnivo

Image

Image Compressor

  • Browser-based
  • No signup
  • Stays on your device
  • Your file is processed in your browser and is not uploaded to our servers.

Upload a JPG, PNG, WebP, or GIF and compress it in your browser. Choose Light, Balanced, or Strong compression and output as Auto, JPEG, or WebP. Auto tries both formats and keeps the smaller file. Very large images may be resized. Files are not uploaded to a server.

Web performance and email attachments are the most common reasons to compress images. Lossy formats trade fine detail for smaller bytes; lossless PNG is larger but preserves sharp edges and transparency. Use Auto mode when you want the tool to pick the smaller of JPEG or WebP output.

Very wide hero images may be downscaled automatically before compression to keep processing responsive. Check dimensions in the preview if pixel-perfect width is required for a design spec.

100% Client-Side

Your data never leaves your computer.

What to do next

How to use this tool

1. Choose a JPG, PNG, WebP, or GIF file. 2. Pick compression level and output format. 3. Click Compress image. 4. Compare original vs compressed size in the preview. 5. Resize first if dimensions are larger than you need for the web.

Worked example

Example: a 2.4 MB phone photo at 80% quality WebP might drop to about 420 KB with little visible loss on a laptop screen.

When to use this

  • Shrinking hero images before publishing a blog post.
  • Hitting CMS or email attachment size limits.
  • Converting heavy PNG UI shots to smaller JPEG or WebP.
  • Batch-tuning quality before a static site deploy.

Common examples

  • 2.8 MB hero JPG at 80% quality WebP → often under 500 KB for blog headers.
  • 4 MB product PNG → JPEG export at 85% for catalog listings when transparency is not needed.
  • Batch of blog images resized to 1200 px wide then compressed → faster LCP on static sites.
  • 1.8 MB team photo → WebP at Balanced for about 200 KB on careers page.
  • Ecommerce PNG with transparency → compress without converting to JPEG when alpha matters.

What people search for

  • compress image
  • reduce image file size
  • image compressor online
  • compress jpg for web
  • webp compressor

Common mistakes

  • Compressing already tiny images and expecting large savings.
  • Using too low quality on text-heavy screenshots.
  • Flattening transparency when converting PNG to JPEG unintentionally.
  • Uploading originals without checking dimensions first.

Related long-tail tasks

  • resize image to exact width then compress
  • convert PNG to WebP for faster LCP
  • compress image to under 200 KB
  • bulk compress product photos for ecommerce
  • compare before/after file size at same dimensions

How it works

Upload a JPG, PNG, WebP, or GIF image, choose a compression level and output format, then compress. The tool may resize very large images and tries multiple quality settings (and WebP plus JPEG in Auto mode) to find a smaller file. Processing runs in your browser—files are not uploaded to a server.

Limitations

Compression is lossy for JPEG output. Very small images or transparent PNGs may not shrink much without visible quality loss.

Privacy and file handling

Your data is processed in your browser and is not uploaded to our server.

Specialized Image Compressor guides

Explore focused guides for common searches—each page reuses this image compressor with different examples and FAQs.

Related comparisons

Learn how formats and terms differ before you convert or calculate.

Frequently asked questions

What do the compression levels do?

Light keeps higher quality and larger dimensions. Balanced is a middle ground. Strong uses lower quality and a smaller max dimension for the smallest files. Each level also tries lower qualities if needed to beat the original size.

Which formats are supported?

You can upload JPG, PNG, WebP, or GIF. Output can be Auto, JPEG, or WebP. Auto tries WebP and JPEG and keeps the smaller result.

Are my images uploaded to a server?

No. Compression runs entirely in your browser. Files are not uploaded or stored by Utilnivo.

Part of these workflows

This tool is one step in a longer job. Jump straight to your step or open the full workflow guide.

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Related pages

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