ProToolBox

Image Compressor Online

One tall export preview in the input column, dial JPG/WebP quality, export PNG when you need lossless-everything runs in this tab. No upload, no signup.

Compress image

Shrink photos and graphics-live export preview and stats update as you tune quality and format.

1 Choose file · 2 Tune quality & format · 3 Preview export · 4 Download

Result

JPG and WebP use the quality slider; PNG is lossless from the decoded bitmap. The export preview and details refresh as you change settings.

Export preview
%

Tip: JPG/WebP ~75-85% is a strong default for photos; PNG ignores quality (lossless from the preview).

Runs in this tab only-no server upload, no signup, no watermark.

Choose an image. After it loads, previews and stats update automatically when you change quality or format.

Next: Resize · Crop · PNG→JPG · JPG→PNG · Metadata · PDF→JPG · All image tools · All tools

  • Works in your browser-your file is processed on your device
  • We do not store your uploads on our servers
  • Free and instant
  • No account needed
  • Your media stays in this tab until you download or leave

What this is for

Image Compressor Online prepares files for web and email: free and instant, works in your browser. Compress, resize, convert-preview before CMS, storefront, or newsletter (see the page for how files are handled).

  • Compare previews until size and clarity feel right
  • Re-export when crop or DPI requirements change
  • Batch mindset for heroes and thumbnails
  • No account needed for the workflow on this page

Flow: Repeat passes during launches-same tool, predictable steps.

What “smaller” usually targets

  • Web heroes - ~1200-1920 px wide and roughly ~200-800 KB JPG is a common fast-loading band on mobile data.
  • Social feeds - ~1080 px on the long edge is a widely safe default for many platforms.
  • Your file - After upload, the results column shows exact original vs output size and percent change.

Compress every hero and product shot before you publish-bookmark this tab so the check takes one click.

Quick guide

Watch file size change as you move quality or switch format-the summary column spells out original vs output bytes.

  1. Choose a file - originals and compressed previews appear side by side.
  2. Adjust quality and format - details and the big summary update instantly.
  3. Download when the tradeoff between size and sharpness looks right; keep a master copy for print if you need it.

Also try Image Resizer, Image Cropper, or all tools.

Privacy: Your images and audio are processed in this browser. We do not receive your files on our servers for these tools.

FAQ

  • Are files uploaded to your cloud? No - processing stays in this browser tab.
  • Do I need an account? No.
  • Why did WebP save as JPEG? Some browsers cannot encode WebP; the tool falls back and shows a short notice.

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