Image File Size Cheat Sheet — Every Format, Dimension & Quality Setting

Quick Reference: Expected File Sizes

Stop guessing. Here is what a typical photograph produces at common dimensions and quality settings:

Dimensions	JPG 100%	JPG 85%	JPG 70%	PNG	WebP 85%
640x480	450KB	120KB	80KB	600KB	85KB
1080x1080	1.2MB	300KB	180KB	2MB	220KB
1920x1080	2.5MB	550KB	350KB	4MB	400KB
2560x1440	4.5MB	900KB	550KB	7MB	650KB
4000x3000	8MB	1.5MB	900KB	12MB	1.1MB

Sizes are approximate for typical photographic content. Graphics, screenshots, and illustrations vary significantly.

What These Numbers Mean for You

• Need under 1MB for email? → Resize to 1920x1080 and use JPG 85%. Done. Use Resize Image then Compress Image.
• Need under 200KB for web? → Resize to 1080px wide, WebP 85% or JPG 70%. Use Image Converter for WebP.
• Need under 25MB for Discord? → Almost any photo at any quality fits. Only 4K+ images at PNG 100% quality risk exceeding this.
• PNG is always bigger — for photos, PNG is 3-5x the size of JPG. Only use PNG when you need transparency or pixel-perfect screenshots.
• WebP beats JPG by 25-35% — same quality, smaller file. Use WebP for websites, JPG for universal compatibility.

Format Comparison: JPG vs PNG vs WebP

Feature	JPG	PNG	WebP
Best for	Photos	Graphics, screenshots	Everything (web)
Transparency	No	Yes	Yes
File size (photo)	Small	3-5x larger	25-35% smaller than JPG
Quality type	Lossy	Lossless	Both available
Browser support	Universal	Universal	96%+ (all modern)
Email support	Universal	Universal	Spotty in older clients

Why Dimensions Matter More Than Quality

Counterintuitive fact: resizing has a bigger impact on file size than compression quality.

A 4000x3000 photo at JPG 85% = ~1.5MB.
The same photo resized to 1920x1080 at JPG 100% (no compression) = ~2.5MB.
Resized to 1920x1080 at JPG 85% = ~550KB.

Halving the dimensions quarters the pixel count — and pixel count drives file size more than quality settings. Always resize first, then compress.