Form & Portal Ready
ID uploads and document portals frequently cap PNG files at 100KB.
Compress PNG to 100KB Online
Forms and portals that accept PNG often still enforce a 100KB cap. Bring your PNG under 100KB in your browser — lossless when possible, with smart JPEG conversion for photos without transparency.
Last updated: August 7, 2026
Why Choose Image Toolkit
Lossless First, Smart Conversion Second
Small PNGs are re-encoded losslessly; larger ones without transparency convert to JPEG on Maximum mode.
Zero Upload, Zero Risk
Processing happens entirely in your browser — your file never leaves the device.
How to Use
- 1
Upload an image
Click the upload area or drag & drop a JPG/PNG image onto the page.
- 2
Choose compression quality
High quality (near-lossless), Balanced (best for web), or Maximum compression (smallest size).
- 3
Download the result
Compare the file size and savings percentage, then download with one click.
PNG is common for scanned documents and ID uploads — but its size often blows past the 100KB limit many portals enforce. This tool gets your PNG under the cap without forcing you to give up the format.
How to compress a PNG to 100KB
- Upload your PNG.
- Start with Balanced (lossless). If the result is still above 100KB, switch to Maximum — non-transparent images convert to JPEG and shrink dramatically.
- Download and check the size on screen.
Where PNG 100KB limits apply
- Government & banking portals — document uploads with strict size caps.
- Exam and application systems — scanned certificates capped at 100KB.
- HR databases — employee photo uploads often enforce 100KB.
Privacy as standard
Your document or photo is processed locally in the browser. No upload, no account, no watermark.
Frequently Asked Questions
Can a PNG really get under 100KB?
Yes. Lossless re-encoding handles small PNGs; for larger ones, Maximum mode converts non-transparent images to JPEG, which almost always lands under 100KB.
Will converting PNG to JPEG lose transparency?
Conversion only happens when the image has no transparent areas. If your PNG has transparency, it stays PNG and is compressed losslessly.
Is compressing a PNG ID photo safe?
Completely private — nothing is uploaded. All compression runs locally in your browser.