Compress Image to 350kB
Resize your image size to 350kB. Supports JPG, PNG, and WebP image formats.
Resize your image size to 350kB. Supports JPG, PNG, and WebP image formats.
Compress any JPG, PNG, or WebP to 350KB in your browser. No server upload. 350KB works well for full-width article images, product detail shots, and any web graphic where you want solid quality without the page weight of an unoptimised upload.
350KB sits in a useful range for content-heavy websites. It's below the threshold where Google PageSpeed typically flags individual images as "oversized", while being large enough to look sharp at 1200–1600 pixel widths on standard-density screens. For Retina or high-DPI displays, you'd need to serve a higher-resolution source — but at 2× pixel density, you're serving a 2400×1600 image anyway, and compressing that to 350KB still keeps quality strong.
News sites, travel blogs, and recipe sites commonly target 300–400KB for their editorial photography — large enough to make the content feel rich, small enough that a reader on a train can still load the page in a reasonable time. 350KB is a sensible mid-point in that range.
When someone shares a URL on Facebook, LinkedIn, or Slack, the platform fetches the og:image tag and displays it as a preview card. Open Graph images are loaded directly — no CDN resizing or on-the-fly optimisation — so the size of the file you specify is what gets downloaded. 350KB for an og:image is fine for desktop shares; on mobile, it is on the heavier side. For og:images, 150–250KB is a better target if you want the preview to load quickly on slow connections.
For the standard web image target, see our 200KB compressor. For larger product or hero images, see 500KB.
Drop your image or click to select. JPG, PNG, and WEBP supported.
The tool targets 350KB and runs locally in your browser.
Save the result. If you're uploading to a CMS, upload the compressed file rather than the original to avoid the platform applying its own compression on top.
Compressing images to 350KB improves website performance, SEO rankings, and ensures faster page load times—especially on mobile devices or slower networks.
Our tool will automatically resize and optimize the image to ensure it meets the 350KB limit while maintaining high visual quality. This is perfect for web uploads, email attachments, or online forms.
Our smart algorithm ensures minimal quality loss while significantly reducing file size. You'll retain sharp, clear visuals that load faster and use less bandwidth.
Yes, our tool supports batch image compression, allowing you to compress several files simultaneously, saving time and effort.
You can compress JPEG, PNG, and WEBP images to 350KB using our tool. Just upload your file, and we'll handle the rest.