Compress any image to 300KB or less automatically. For high-quality web images, blog posts and CMS uploads where visual fidelity matters and a 300KB limit applies.
Drop your JPEG or PNG. At 300KB, large web photos up to 1600×1000 pixels compress with high quality. Original dimensions shown immediately.
Binary search finds the highest JPEG quality at or under 300KB. Large photos and banner images typically achieve quality 82–90, looking excellent for web display.
Review the comparison and download your 300KB image.
A 1200×800 pixel photo at 300KB achieves approximately JPEG quality 82–88 — excellent for blog hero images and web banners. A 800×600 pixel photo at 300KB achieves quality 88–94 — near-original quality. A 1920×1080 pixel image at 300KB achieves quality 72–78, which is good for full-width backgrounds.
Yes — 300KB is a reasonable size for WordPress featured images and in-post images displayed at medium sizes. WordPress itself further compresses images on upload, so starting at 300KB ensures the final stored image maintains good quality after WordPress's automatic processing.
300KB is fine for standard product listing images displayed at 400–600 pixels. For zoom-enabled product images that need to display at 1200 pixels or more, consider 500KB–1MB for better quality when customers zoom in.
No — pixel dimensions are always preserved. Only JPEG quality is adjusted to achieve the 300KB file size. If your CMS or portal also requires specific pixel dimensions, use an image resizer first and then compress here.
At 300KB, a single image is unlikely to be the dominant cause of a poor PageSpeed score for most websites. Google flags images that are significantly larger than their display size — so a 300KB image displayed at 800×600px may still get flagged. Serving the right size via responsive images (srcset) and using WebP format will have a larger impact on your score than the compression level alone.
