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Compress Image for USPS

Last updated: June 2026·By the CompressTo20KB Team·~7 min read

Updated February 2026 · 4 min read

Uploading images to USPS Click-N-Ship, ordering personalized stamps, or submitting through USPS.com — each has specific file size and format requirements. Here is what you need to know.

USPS Image Requirements by Use Case

USPS Use CaseMax File SizeFormat
Personalized Stamps2MBJPEG / PNG
Click-N-Ship Label1MBJPEG / PNG
USPS.com Account Photo1MBJPEG / PNG
USPS Business Portal500KBJPEG
Informed Delivery images200KBJPEG / PNG

How to Compress Your Image for USPS

  1. 1
    Open CompressTo20KB
    Free — no account needed.
  2. 2
    Upload your image
    Drop JPEG or PNG. All processing in your browser.
  3. 3
    Set your target size
    Exact KB Mode: stamps → 1000KB, business portals → 500KB, Informed Delivery → 200KB.
  4. 4
    Download and upload to USPS
    Done in seconds.

FAQ

What image format does USPS accept?

JPEG and PNG. JPEG recommended for photos.

What is the maximum file size for USPS image uploads?

Personalized stamps: under 2MB. Click-N-Ship and other portals: under 1MB.

How do I compress an image for USPS for free?

Use CompressTo20KB — Exact KB Mode, type your target. Compressed in browser, no upload.

Compress Your USPS Image Free

Set any exact KB target. No upload. Works on all devices.

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Related: Amazon Product Image Requirements · Compress for Shopify
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Written by
the CompressTo20KB Team

We build tools and guides for compressing images to exact file-size targets for government forms, visas, and everyday use.