Compress an image to 500 KB

How much photo fits in 500 KB

More than people expect. Our 1,920 x 1,280 street photo, full of fine detail, fitted under 500 KB at its full size with quality 67. Saved at fixed qualities, the same scene came to:

So at good quality, 500 KB holds a busy photo of about 1,600 pixels on the long side, which fills a laptop screen. Calmer scenes keep more: our 960 x 1,280 portrait needed only 305 KB at quality 95.

When 500 KB is the minimum

Some sites want large files. Immigration New Zealand asks for a visa photo saved as JPEG, between 500 KB and 3 MB, and between 900 x 1200 and 2250 x 3000 pixels.

That is harder than it sounds with a smooth background. Our portrait at exactly 900 x 1200 came to only 253 KB at quality 95, so the tool saved it at quality 100 to pass 500 KB, which gave 682 KB. The busy street scene at the same size passed at quality 95 with 551 KB. If a photo still falls short at full quality, use a larger pixel size inside the allowed range rather than a padded file.

Tap the 500 KB to 3 MB chip. With Keep or shrink on, the tool never enlarges a photo: if it cannot reach 500 KB at its own size, the result line suggests a pixel size that would. A blurred copy of our portrait needed about 1,448 x 1,930. If the suggestion is inside the 900 x 1200 to 2250 x 3000 that Immigration New Zealand allows, tap Use to apply it as an exact size.

Documents and scans at 500 KB

Forms that take certificates often cap each one at 500 KB, usually as a PDF. MSTC, for example, asks for caste or disability certificates as PDFs of 100 to 500 KB. A phone photo of a printed page fits easily: compress it here, or make the PDF directly with JPG to PDF under 500 KB.

Sources, checked 13 October 2026: Immigration New Zealand, Taking acceptable visa photos (PDF); MSTC Limited, steps for uploading images and documents.