Read both upload requirements
Note the maximum file size and longest edge: they are separate limits. Here, 1 kB means 1,000 bytes. If the portal specifies KiB, minimum dimensions or a particular format, check those conditions too.
Set the result you need
Try 500 kB and 1,200 px and choose a format. Proportions are preserved without enlargement. JPEG and WebP try quality 95 to 40, then fewer pixels; PNG only reduces pixels. The longest edge may drop to 64 px unless the original is smaller.
Check readability and format
JPEG suits photos without transparency and uses a white background. PNG and WebP preserve transparency. PNG has no quality slider, but reducing pixels can soften text and graphics. Open the preview at full size and inspect it: even a file within the size limit can be hard to read.
Check both results before uploading
The result compares actual bytes and longest edge with your limits. If the search cannot find a suitable copy, it says so and shows the smallest file tried. Do not upload it as compliant: change the requirements or ask for another delivery method.
- The copy meets both the file size limit and required dimensions.
- Important text and details are still readable.
- The original is saved and the copy has a recognizable filename.
Frequently asked questions
Can every photo be reduced below 200 kB?
Not always. The search tries different quality settings and dimensions within the stated limits, but the achievable size depends on the image and browser. Check both results and readability: meeting the byte limit does not guarantee acceptance by the portal.
Can I compress a photo without losing quality?
It depends on the method. Resizing removes detail, and JPEG re-encoding loses information even when the change is hard to see. Lossless optimization is a different operation and may save much less space.