Compress JPG to 500 KB

When a form allows 500 KB per image, you have room to keep real detail. That makes this size a good fit for photos of documents with small text, receipts, handwritten pages, or portraits where you want skin tones and hair to look natural rather than smudged. The goal on this page is not the smallest possible file; it is the clearest file that still fits.

When 500 KB is the better choice

If the form says "maximum 500 KB", there is no reward for going down to 100 KB. Reviewers will zoom into your upload, and a document photo compressed too hard shows blocky artefacts around letters. Use the full allowance when you are uploading:

• A photo of a certificate, mark sheet or bank statement page.
• Handwritten forms where pen strokes need to stay readable.
• Product or work samples where colour and texture matter.

What happens during compression

Images larger than 2400 px on the longest side are scaled to 2400 px first. The tool then encodes a JPEG at the starting quality, 84% by default, and checks it against the safe target of 470,000 bytes (500 KB less a 6% margin). If it is still too large, quality drops 10 points per attempt, up to 7 attempts, with a floor of 18%. If the file is still too big at the 18% floor, the tool then shrinks the pixel dimensions step by step (never below 640 px on the longest side) and shows the final dimensions in the result.

Simple, evenly lit photos can pass on the first or second try with very little visible change, and the result panel tells you exactly which quality was used. Busy scenes such as foliage, crowds or patterned fabric take more bytes and may need one or two extra steps.

Using the starting quality slider

The slider sets where the search begins. Because a 500 KB target is generous, you can raise the starting quality above 84% for a document photo and let the tool step down only if needed. If the result reports a quality in the 80s or 90s, you have kept close to the original detail. If it fell into the 40s, the image was unusually busy, and cropping out unneeded areas will help more than anything else.

If the form wants a PDF instead

Some upload slots accept only PDF even for scanned pages. In that case, compress the photo here first if it is huge, then turn it into a document with photo to PDF, which embeds JPG files without compressing them again. If the PDF still needs to be smaller, finish with the 500 KB PDF compressor.

The image stays on your device throughout. EXIF data such as GPS location is removed by re-encoding, no account is needed, and the receiving portal's current instruction remains the final authority on accepted formats and sizes.