LocalPixThis is the form-and-portal case, not a generic shrink-anything page. University applications, visa-adjacent uploads, tax or benefits portals, and municipal forms often say “JPG under 500 KB” or “maximum 2 MB”. Compress to KB binary-searches JPEG quality on this device. The control accepts 10 to 5000 KB. Convert megabytes before you type: 1 MB is 1000, 2 MB is 2000. Above 5 MB the field will not take the number — crop first.
A short workflow
- Read the portal's cap, including the unit. If the source is HEIC from a phone, run HEIC to JPG first. This page does not decode HEIC.
- Open Compress to KB and type the cap in KB. A PNG screenshot of a letter is usually happier after you read compress a PNG for email.
- Download the JPEG and open it before you upload. The search keeps the largest result at or under the cap, so you may land a little under the number, not exactly on it.
- If text on the form is mush, raise the cap or crop to the page that matters. The tool cannot invent detail the cap does not allow.
- Optional: verify local and confirm the Network panel shows no upload of your scan.
What this is not
- Not a promise of an exact byte count. It is a best-effort JPEG under the cap.
- Not the 100 / 200 / 500 KB mailbox habit. Those budgets are in attachment caps. A portal that says “about 1 MB” is a different target.
- Not a passport layout. It only changes file size.
FAQ
The portal said 2 MB. What do I type?
2000. The field is kilobytes, from 10 to 5000. 1 MB is 1000.
Why is the file under the cap but not equal to it?
Quality is an integer search. The tool stops at the largest JPEG that still fits. A little under is a success.
Does the scan leave the device?
No. The quality search stays in the tab. Verify local.
Related
Compress to KB · 100 / 200 / 500 KB · WhatsApp image to an email cap · Verify local