Is JPEG compression lossy?

Yes, reducing quality discards some image information.

Can I restore original quality later?

No, keep the original for future edits.

Does compression resize the image?

Quality compression and resizing are separate.

Will the file always shrink?

Not if the source is already highly compressed.

What quality should I choose?

Preview the result at its intended display size.

JPG Compressor

Compress JPG images at your chosen quality.

Reading time:: 2 min
Last updated:: 5 August 2026
Price:: Free, no signup

Your file

Click to choose a fileAccepts: image/jpeg · Processed locally in your browser

Results (live)

Choose a file to see the result.

What the JPG Compressor does

Reduce JPEG file size by adjusting quality while previewing the visual trade-off.

Reduce a JPEG's file size by adjusting quality while you watch the visual trade-off.

Why the JPG Compressor is useful

Smaller image files can load faster, but aggressive compression may create visible artifacts.

Photos are usually shared far larger than needed, and a modest quality step often halves the size with no visible difference.

Also known as: jpg compressor, compress jpg, jpeg optimizer, free jpg compressor, online jpg compressor, jpg compressor online free, jpg compressor tool.

How to use the JPG Compressor

1
Pick a quality
Choose the JPEG and try a quality setting, starting around 70 to 80 percent.
2
Adjust and process
Choose a JPG, adjust quality, compare the preview and file size, then download the optimized copy.
3
Zoom and compare
Zoom into a detailed area to compare before and after, then download the smaller file.

Key features

Adjustable quality setting
Live comparison of size and appearance
Creates a separate compressed copy

Benefits

The same photo travels at a fraction of its original size.
The preview shows artifacts before you commit, so there is no surprise after download.

Real-life use cases

Email attachments

Bring a camera photo under an email attachment limit.

Product images

Prepare product images that load fast on a shop's category pages.

Tips for the best results

Choose the highest compression that still looks acceptable at the image’s actual display size.
Recompressing an already compressed JPEG stacks artifacts, so start from the original when you can.

Conclusion

Pick the smallest quality setting you cannot visually fault rather than the highest number on the slider.

Frequently asked questions

Is JPEG compression lossy?: Yes, reducing quality discards some image information.
Can I restore original quality later?: No, keep the original for future edits.
Does compression resize the image?: Quality compression and resizing are separate.
Will the file always shrink?: Not if the source is already highly compressed.
Is my image uploaded?: No, processing is local.
What quality should I choose?: Preview the result at its intended display size.

Related tools you may need

PNG Compressor — Re-encode PNG images to reduce file size.
SVG Optimizer — Strip comments, metadata and whitespace from SVG.
WebP to JPG Converter — Convert a WebP image to JPG in your browser.
Image DPI Checker — Read the DPI stored in a JPG or PNG image.
HTML Minifier — Strip whitespace and comments from HTML.
JavaScript Minifier — Basic JavaScript minifier — strips comments and extra whitespace.
Image Blur Tool — Apply a Gaussian blur to any image.
Grayscale Image Converter — Convert any image to black-and-white grayscale.

Keep exploring

Browse the full tools directory, filter by category, or read guides on the Text Tools Hub blog.