Resize JPEG Images to 300×250 (Medium Rectangle Ad)
The medium rectangle — the highest-performing ad unit globally with the widest inventory and best CPM rates. When preparing JPEG images for 300×250 display, proper compression is essential — optimized files load faster, look sharper, and use less bandwidth. Use ImageSmith to compress your JPEG images to the ideal file size for 300×250 display: sidebar ads, Google Display ads, in-content ads.
Loading tool…
Width
300px
Height
250px
Category
ad
Format
JPEG
▸sidebar ads
▸Google Display ads
▸in-content ads
Compress your JPEG too
Reduce file size before or after resizing — instant, browser-based, free.
Other JPEG Resize Sizes
Resize JPEG to 300×250 — FAQ
For 300×250 JPEG images, target under 200KB for web use, under 100KB for email, and under 500KB for high-quality photography. ImageSmith optimizes to any target size automatically.
The medium rectangle — the highest-performing ad unit globally with the widest inventory and best CPM rates. Common use cases: sidebar ads, Google Display ads, in-content ads.
Upload your JPEG image to ImageSmith, set a target file size (e.g., 200KB for web use), and compress. The tool optimizes quality settings to deliver the best possible image at your target size.
JPEG provides excellent lossy compression at 300×250. WebP is also a strong alternative — 25–35% smaller than JPEG at equivalent visual quality.