Compress image to
500KB online.
Bring a large photo or scan under 500KB while keeping it close to original quality. It is the generous limit many portals allow for high-resolution photos, multi-page document scans and gallery images — compressed privately in your browser, no signup.
Need a smaller target? Try 200KB JPG, 100KB JPG, or 50KB JPG. Just want to shrink a photo as much as possible? Use the main image compressor. Need iPhone HEIC photos as JPG first? Use the HEIC to JPG converter.
Kodotools Team · Last updated: October 2026 · Files stay on your device
About this tool
Use this 500KB image compressor when a form allows a larger file and you would rather not sacrifice quality. 500KB is roomy enough to hold a full-resolution photo, a detailed document scan, or a cover image with almost no visible loss — you are usually just trimming a 2–4MB phone photo down to fit the limit, not crushing it.
Who needs this tool?
- Anyone on a portal that allows up to 500KB and wants to keep quality high
- People uploading high-resolution photos, scans or cover/gallery images
- Users trimming a heavy 2–4MB phone photo down to fit an upload limit
Drop your images here
or click to browse · select multiple
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Target size
Keep the quality
Compress to 500KB without losing quality
At 500KB you are trimming file weight, not squeezing the picture. The tool scales very large images to 2400 px on the longest side, which is still more than any upload form or screen needs, then lowers JPG quality only as far as it has to.
| Starting file | Typical size | At 500KB |
|---|---|---|
| 12MP phone photo | 4000×3000 px, 3–5MB | Comes out at 2400 px wide and looks the same on a screen |
| 48–200MP phone photo | 8000 px+, 8–20MB | Also scaled to 2400 px, so it fits under 500KB easily |
| iPhone HEIC photo | 2–4MB | Converted to JPG automatically, then compressed |
| Screenshot (PNG) | 1–3MB | Fits, but small text can get soft edges; check before uploading |
| A4 scan at 300 DPI | 2480×3508 px, 2–6MB | Fits; text and stamps stay readable |
Need the full original resolution, for printing for example? Don't compress; check the size with the image size checker first. It may already be under the limit.
Is 500KB really your limit?
"Under 500KB" sometimes means a PDF, or a tighter limit hidden in the small print. Pick the right tool:
FAQ
Common questions
How do I compress an image to 500KB JPG?
Upload your image, keep the 500KB preset selected, click Compress, then download the JPG. Because 500KB is a generous budget, most photos come out looking just like the original.
Will compressing to 500KB lower the resolution?
Only for very large images. Anything bigger than 2400 px on its longest side is scaled to 2400 px, which is still sharp on any screen or upload form. Smaller images keep their pixel size; only the JPG quality is adjusted.
My photo is 3MB. Can it really get under 500KB and still look good?
Yes. A normal 12MP phone photo usually comes out under 500KB with no difference you can see on screen. The file is big mostly because phones save at very high quality, not because the picture needs it.
How do I make a picture less than 500KB on my phone?
Open this page in your phone's browser, pick the photo from your gallery, keep the 500KB preset and download. It works on Android and iPhone, including HEIC photos.
Is my image uploaded to a server?
No. All compression happens in your browser using JavaScript. Your image never leaves your device — not even for a millisecond.
Should the 500KB output be JPG or PNG?
JPG/JPEG is best for a 500KB photo or scan — it keeps full detail at that size while staying compact. Use PNG only if your form specifically requires it, since a PNG photo is often much larger than 500KB.
Should I resize before compressing to 500KB?
Usually not — 500KB is enough for a full-resolution photo. Only a very large panorama or a high-DPI scan may need a small resize first to fit comfortably under 500KB.
Why is my compressed image still larger than 500KB?
That is rare at 500KB. It usually means an extremely high-resolution scan or an already-optimised PNG. Resize the dimensions down a little, or save as JPG, then run the 500KB preset again.
Guides
Real use-cases, step by step
Practical walk-throughs for the most common forms with strict size limits.