Compress JPG Online - Reduce JPEG File Size | Piczilo
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Image compressor

Compress JPG

Reduce JPG file size without uploading your photo. Piczilo compresses JPG and JPEG images locally in your browser, keeps the original dimensions by default, and lets you control quality before downloading the smaller JPG.

JPG inputBrowser-only

Choose an image

Choose one image to compress locally.

Step 1 of 2
Choose one image to compress locally.

Local processing

Runs inside your browser

No upload

No upload route or public result URL

Custom settings

Fixed JPG output with quality and optional size limits

Simple process

How it works

  1. 1

    1

    Choose a JPG or JPEG image from your device.

  2. 2

    2

    Adjust the quality slider to control the balance between file size and detail.

  3. 3

    3

    Optionally set maximum dimensions if you also want a smaller pixel size.

  4. 4

    4

    Download the compressed JPG created locally in your browser.

Useful for

  • Reducing JPG photos before uploading them to websites, forms or portals.
  • Making JPEG email attachments smaller while keeping the same pixel dimensions.
  • Preparing product, profile or blog photos with a controlled quality setting.

Limitations

  • Only JPG and JPEG files are accepted on this tool.
  • Very low quality settings can introduce visible compression artifacts.
  • A JPG that was already heavily compressed may not shrink much further.

Learn more

Helpful guides

Practical guides that explain the format and file-size decisions behind this tool.

How to Reduce Image File Size Without Losing QualityA practical guide to resizing, compression, JPG, PNG and WebP so images stay clear without carrying unnecessary file size.Read guideJPG vs PNG vs WebP: Which Image Format Should You Use?A practical format comparison for photos, transparent graphics, website images and everyday file-size decisions.Read guide

Questions

Frequently asked questions

Yes. Piczilo reads, compresses and exports the selected JPG locally in your browser, so the image is not uploaded to a server.

Yes. JPG and JPEG are the same image format, and both file extensions are accepted.

No. Dimensions are preserved by default. The advanced size controls are available only when you intentionally set a maximum width or height.

Start with the default quality, then lower it gradually until the file size and visual detail feel balanced for your use case.

Use the main Compress Image tool when you need PNG, WebP or format conversion options.

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