Processed on your device

Image Compressor

Yes. You can compress JPG and WebP images to a specific KB size in your browser without uploading your files. Using client-side binary search optimization, the tool finds the highest quality setting under your target budget.

Browse files or drag & drop

Files never leave your browser. Zero cloud uploads.

Supports JPG, PNG, or WebP images

Your files are processed in your browser and are not uploaded by our code. You can confirm this in your browser's Network tab. Third-party ad scripts load on the page, outside the tool area, and are not given your files.

How does it work locally?

1

Drop Images

Select one or more photos from your device. EXIF orientation is respected automatically.

2

Set Target KB or Quality

Choose manual quality slider or enter an exact target size (such as 100 KB or 200 KB).

3

Compress & Download

Inspect before and after file size savings, and download optimized images individually or as a ZIP.

Tips for Best Results

Select WebP format to achieve 25% to 35% smaller file sizes than JPG at equivalent visual quality.
Use the Target Size in KB mode when submitting photos to portals with strict upload ceilings.
Compressing screenshots with large flat-color areas yields massive percentage reductions.

Format Comparison

Target KB Goal	Compression Search Steps	Tolerance Band	Visual Integrity
50 KB	4-6 iterations	Within 5 KB	Slight compression softening on continuous textures
100 KB	4-6 iterations	Within 5 KB	Very good clarity for mobile and web views
250 KB	4-6 iterations	Within 5 KB	Near-master fidelity for desktop wallpapers and galleries

Limits and Technical Specifications

Maximum image resolution: 50 megapixels.
Target size search is available for JPG and WebP formats.
Maximum batch: 20 files per run.

Frequently Asked Questions

How does the target size mode work?

Our algorithm performs a binary quality search to find the highest compression quality that stays under your target KB budget.

Does compression preserve EXIF orientation?

Yes. Images are decoded honoring EXIF orientation tags so photos never rotate sideways unexpectedly.

Can I compress multiple photos together?

Yes. You can select up to 20 images simultaneously and download them in a single compressed ZIP file.

Which format gives smaller sizes: JPG or WebP?

WebP typically achieves 25% to 35% smaller file sizes than JPG at equivalent perceived visual quality.

Do my pictures leave my device?

Never. All compression runs in client-side memory with zero server uploads.

Related In-Browser Tools

Image Resizer & Cropper

Resize image dimensions by pixels or percentage.

Universal Image Converter

Convert image formats with metadata stripping.

JPG vs PNG vs WebP Guide

Detailed comparison of modern image codecs.

Suggested Tools & Resources

Independent Recommendations

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SVGViewer

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Adobe Firefly

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Best for: Commercially clear generative fills and design texture synthesis

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Also on JR LocalLab:

Image Resizer Universal Image Converter