Free Tool

Batch Optimize Images — Without Uploading Anything

Compress, resize, and convert unlimited images locally in your browser. Use platform presets, keep folders intact, and download everything as a single ZIP.

Image Optimizer showing demo images in the queue with export options

Why It Helps

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Privacy-First

Processing runs in your browser — your images don’t need to leave your device.

Fast Batch Workflow

Drag-and-drop a whole set of images, run once, and export everything together.

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Platform Presets

Start with presets for common use cases (e-commerce, social, ads), then fine-tune.

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Keeps Folder Structure

Optionally preserve subfolders in the output ZIP to match your original organization.

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Modern Format Support

Convert to JPEG/PNG and optionally WebP/AVIF when your browser supports them.

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Clean Exports

Rename output as needed, download singles, or export the full batch as a ZIP.

Image Optimizer Features

One Workspace for Upload → Process → Export

Add files (or folders), run the optimizer, then download everything at once. Progress and results are tracked in a queue so you can process big batches confidently.

  • Queue with per-file status
  • Pause/resume/stop processing
  • Download single files or a ZIP
Queue view with processing controls and export panel

Presets for Real Targets (E-commerce, Social, Ads)

Apply a preset to set format, dimensions, and quality/target-size rules for common platforms. Great for consistent listings and campaigns.

  • Amazon/eBay/Etsy presets
  • Instagram/Story sizes
  • Target file size mode for ad constraints
Preset selector showing e-commerce and social presets

Controls for Quality, Size, and Resizing

Tune output format, quality, resizing strategy, and algorithms. The goal: smaller files that still look sharp at the sizes you need.

  • Resize by max dimension or exact size
  • Quality slider (format-dependent)
  • Resize algorithm options (where supported)
Settings panel for format, resize, and quality controls

Common Questions

No. The tool is designed to run locally in your browser, so you can optimize images without uploading them to a backend.
Yes. Enable “Preserve folder structure” in the export options to keep subfolders inside the ZIP.
HEIC input is supported. If your browser can’t decode it natively, the app will convert it for processing.
It depends on your browser. When a format isn’t supported, the option will be disabled.
Yes. You can batch process many images in a single run. Performance depends on your device and browser.

Ready to Optimize Your Images?

Free to use. No signup required.

Launch Image Optimizer