Resize Image to 500 KB
Getting an image under 500 KB is a file-size job, not a dimensions job. This page opens the compressor already set to a 500 KB target — it finds the highest quality that still fits under the limit. Everything runs in your browser — nothing is uploaded. Need different dimensions instead? Resize or convert.
Why compress to 500 KB?
500 KB is a common upload limit for blog images, large web graphics and attachments. At that size a JPG photo can be about 1760×1320 pixels at medium quality.
About 1760×1320 px fits
At medium quality a detailed JPG photo of roughly 1760×1320 pixels lands under 500 KB; at high quality about 1230×920.
Typical use
500 KB limits are common for blog images, large web graphics and attachments.
7.2× smaller than a phone photo
A 12 MP phone photo is around 3–4 MB, so it must shrink about 7.2×. The tool lowers quality first and resizes only if needed.
Quality to expect
At 500 KB, quality is very good. There is room for a sharp, full-screen photo.
Scans and documents
A scanned A4 page of about 2120×3000 pixels usually fits, because text pages compress far better than photos.
Exact limit, checked
500 KB is measured as 512,000 bytes (1 KB = 1,024 bytes), the way most upload forms count it, so the file is never just over.
500 KB at a glance
| Limit in bytes | 512,000 bytes |
|---|---|
| Photo at high quality | about 1230×920 px |
| Photo at medium quality | about 1760×1320 px |
| Photo at low quality | about 2380×1780 px |
| Scanned A4 document | about 2120×3000 px |
| Reduction from a 12 MP phone photo | about 7.2× |
| Output format | JPG (best for photos), WebP or PNG |
| Typical use | Blog images, large web graphics and attachments |
Compress an image to 500 KB in 3 steps
- Add your image — JPG, PNG, WebP or a phone photo.
- The target is already set to 500 KB. Leave “Remove EXIF metadata” ticked to save extra bytes.
- Click Compress and download a JPG under 500 KB.
New to image compression? Read the full compression guide.
Hitting 500 KB without wrecking the image
Two different things get called “resizing”, and they are not the same job. Resizing changes the pixel dimensions — 4000×3000 becomes 1920×1440. Compressing keeps the dimensions and reduces the quality until the file is smaller. When a form says “maximum 500 KB” it is asking about the file, so compression is the tool, and that is what this page opens.
The target mode works by binary search: it encodes the image repeatedly at different quality levels, narrowing in on the highest quality that still lands under your limit. That takes a moment longer per image than a fixed quality setting, but it means you are not guessing and not overshooting downward.
If it cannot reach 500 KB at a sensible quality, the image is probably too large in dimensions. A 6000×4000 photo has 24 million pixels to store; squeezing that into 500 KB means quality low enough to see. Switch to the Resize tab, bring the width down to something the destination actually displays — 1920 is plenty for most uses — and then the 500 KB target is easy to hit with quality to spare.
PNG behaves differently. PNG is lossless, so there is no quality dial; the compressor reduces the colour palette instead. That works on logos and flat graphics and barely moves a photograph. If your 3 MB file is a photo saved as PNG, converting it to JPG or WebP will save far more than any amount of compression — use the converter for that first.
Kilobytes here mean 1024 bytes, which is what upload forms almost always mean too. If a form rejects a file that looks like it fits, aim a little under the limit rather than exactly at 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
How do I make an image exactly 500 KB?
You aim for under 500 KB rather than exactly — the compressor searches for the highest quality that still fits beneath the limit. If it cannot get there without visible quality loss, reduce the pixel dimensions first and then compress; a smaller image needs far less data.
How many pixels fit in 500 KB?
For a detailed JPG photo, about 1760×1320 at medium quality or 2380×1780 at low quality. Simple graphics and scans can be much larger.
What quality will a 500 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 500 KB the same as 500,000 bytes?
Not quite. Most forms count 1 KB as 1,024 bytes, so 500 KB is 512,000 bytes. The tool uses the same count, so a file it marks as under 500 KB is accepted.
Should I use JPG or WebP for 500 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 500 KB?
Very large or detailed images may not reach 500 KB by quality alone. Resize it first (for example to 1760 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.