DevCoreTools

Image Compressor

Reduce image file size locally in your browser with quality settings, format options, preview, and download.

Image input

Choose a PNG, JPEG, or WebP file from your device.

Processed locally in your browser Limit local image files. Your input is processed in your browser and is not uploaded or sent to a server. Avoid pasting production secrets, access tokens, private keys, passwords, or sensitive customer data unless you understand the risk.

Compression options

Output format

Compressed preview

Compress an image to preview the exported result.

Preview appears after compression.

Original preview, compressed preview, file-size savings, and download actions stay in this browser session.
Images are processed locally with canvas and are not uploaded.

Image compression guide

Compress images for websites, docs, previews, and sharing while choosing format, quality, and dimensions intentionally.

Quality settings

JPEG and WebP quality controls trade visual detail for smaller files. Start near 75-85% for photos, then lower it if the preview still looks acceptable.

JPEG, PNG, and WebP

JPEG is useful for photos without transparency. PNG is lossless for graphics and transparency but may not get smaller. WebP can be compact when browser export is supported.

Optional max dimensions

Large photos often save the most bytes when scaled down. Use max width and height to fit a web slot without stretching the image.

Size savings

The summary compares original file size, compressed file size, bytes saved, and percentage reduction so you can decide whether the export is worth using.

Browser-local processing

The selected image is decoded and exported with browser canvas APIs. This page does not upload files, fetch remote image URLs, or call an external image service.

Metadata limitation

Canvas export may strip EXIF, GPS, camera, color-profile, orientation, and other metadata. Keep the original file if metadata preservation matters.

Keep working

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Frequently asked questions

Does Image Compressor upload my image?

No. The file picker and drag/drop workflow load the image into your browser, then canvas creates the compressed export locally.

Which image formats can I compress?

The input accepts PNG, JPEG, and WebP files. Output can keep the original format or export JPEG, WebP, or PNG when the browser supports that canvas format.

Why did my compressed file get larger?

Canvas export can be larger when the original was already optimized, when PNG is used for photos, or when quality is set too high. Try JPEG or WebP, lower quality, or max dimensions.

Does PNG compression work like JPEG quality?

No. Browser PNG export is generally lossless and ignores the quality slider, so PNG is best for transparency, icons, and sharp graphics rather than reducing photo size.

What happens to EXIF and metadata?

Most metadata can be stripped during canvas export, including EXIF camera data, GPS tags, color profiles, and orientation tags. This is a browser export limitation.

Can I compress very large images?

Large images are supported within browser memory limits. The tool warns for large files and blocks extremely large pixel counts to avoid locking up the tab.