Compress JPEG to 450 KB
Targeting 450 KB keeps a JPEG comfortably under the very common 500 KB limit, even on strict portals. Everything runs in your browser — nothing is uploaded. Need different dimensions instead? Resize or convert.
Why compress to 450 KB?
Many sites cap images at 450 KB — typically for blog images, large web graphics and attachments. That leaves room for roughly a 1670×1250 JPG photo.
About 1670×1250 px fits
At medium quality a detailed JPG photo of roughly 1670×1250 pixels lands under 450 KB; at high quality about 1160×870.
Typical use
450 KB limits are common for blog images, large web graphics and attachments.
8× smaller than a phone photo
A 12 MP phone photo is around 3–4 MB, so it must shrink about 8×. The tool lowers quality first and resizes only if needed.
Quality to expect
At 450 KB, quality is very good. There is room for a sharp, full-screen photo.
Scans and documents
A scanned A4 page of about 2010×2850 pixels usually fits, because text pages compress far better than photos.
Exact limit, checked
450 KB is measured as 460,800 bytes (1 KB = 1,024 bytes), the way most upload forms count it, so the file is never just over.
450 KB at a glance
| Limit in bytes | 460,800 bytes |
|---|---|
| Photo at high quality | about 1160×870 px |
| Photo at medium quality | about 1670×1250 px |
| Photo at low quality | about 2260×1690 px |
| Scanned A4 document | about 2010×2850 px |
| Reduction from a 12 MP phone photo | about 8× |
| Output format | JPG |
| Typical use | Blog images, large web graphics and attachments |
Compress an image to 450 KB in 3 steps
- Add your image — JPG, PNG, WebP or a phone photo.
- The target is already set to 450 KB. Leave “Remove EXIF metadata” ticked to save extra bytes.
- Click Compress and download a JPG under 450 KB.
New to image compression? Read the full compression guide.
Headroom under 500 KB
500 KB can mean 512,000 or 500,000 bytes depending on the site. A file of 490 KB here is 501,760 bytes — just over the stricter version. 450 KB avoids that.
Pixel guide: about 1570 pixels wide.
Multiple limits on one form? Photos might be 50 KB and documents 500 KB on the same portal. Use this page for the documents and 45 KB for the photo.
Other file-size targets
Nearby limits — each one opens the compressor already set to it:
Compress by format
Guides and presets for each format:
Compress under a file size
Keeps your image’s format — pick the limit you need:
JPEG under a file size
Frequently asked questions
Why target 450 KB for a 500 KB limit?
To stay under the limit whether the site counts 1 KB as 1000 or 1024 bytes.
How many pixels fit in 450 KB?
For a detailed JPG photo, about 1670×1250 at medium quality or 2260×1690 at low quality. Simple graphics and scans can be much larger.
What quality will a 450 KB photo have?
Very good. There is room for a sharp, full-screen photo. The tool keeps the dimensions where it can and lowers compression quality first, so faces and text stay readable.
Is 450 KB the same as 450,000 bytes?
Not quite. Most forms count 1 KB as 1,024 bytes, so 450 KB is 460,800 bytes. The tool uses the same count, so a file it marks as under 450 KB is accepted.
Should I use JPG or WebP for 450 KB?
JPG is accepted everywhere and is the safe choice for forms. WebP holds about 30% more detail at the same size, ideal for websites that support it.
Why is my file still over 450 KB?
Very large or detailed images may not reach 450 KB by quality alone. Resize it first (for example to 1670 pixels wide) with the resizer, then compress again.
Are my images uploaded anywhere?
No. They are read and compressed by your own browser and never leave your device. You can disconnect from the internet once the page has loaded and it will still work.