Practical guide

How to Reduce JPG File Size

Nine reliable techniques, ordered by impact — biggest wins first.

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The checklist

  1. Resize to the dimensions you actually use. This is the single biggest win. A photo displayed at 1200px wide gains nothing from being stored at 6000px — downscaling alone can cut file size by 90%.
  2. Set quality to 75–85, not 100. Maximum quality is enormous for no visible benefit. Drop to the high-70s/low-80s and most photos shed half their weight invisibly.
  3. Strip metadata. Removing EXIF, GPS and embedded camera thumbnails trims a few kilobytes per image and protects your privacy and location.
  4. Use progressive (not baseline) encoding. Progressive JPGs are often smaller and appear to load faster, rendering a full-but-blurry image that sharpens in.
  5. Crop out what you don't need. Fewer pixels means a smaller file. Tight cropping improves both the composition and the byte count.
  6. Choose the right format for the job. JPG is for photos. Flat graphics, logos and screenshots with text compress far better as PNG or, ideally, WebP.
  7. Compress in one pass from the original. Avoid re-saving an already-compressed JPG repeatedly — generation loss degrades it each time. Edit the master, export once.
  8. Batch-process whole folders. A good tool applies the same resize and quality settings to dozens of images at once, keeping a site's media consistent and light.
  9. Consider modern formats for the web. WebP and AVIF deliver 25–50% smaller files than JPG at the same quality. Serve them with a JPG fallback for older browsers.
Stack them: resize first, then set quality, then strip metadata. Combined, these three steps routinely turn a 5 MB camera photo into a crisp 200 KB web image.

A quick before/after

Take a typical 4 MB smartphone photo destined for a blog post:

That's a ~94% reduction with no visible difference on screen — and a noticeably faster-loading page.

Don't over-do it

Compression is a balance. Push quality below ~60 and artefacts creep in; resize smaller than your largest display size and images look soft on big screens. Aim for "as small as possible while still looking perfect," not "as small as possible."

Curious why these tricks work? Read how JPG compression works, or head back to the overview.

FAQ

What's the single biggest way to shrink a JPG?

Resizing the pixel dimensions to what you actually need. A photo displayed at 1200px wide gains nothing from being stored at 6000px — downscaling alone can cut size by 90%.

Does removing metadata reduce file size?

A little. Stripping EXIF, GPS and thumbnail data removes a few kilobytes and improves privacy, though the image pixels are where the real savings come from.