Image Upload Fixer

Fit common upload limits on file size, dimensions and format.

or drop JPEG, PNG, WebP, GIF, AVIF or HEIC files here · stays on your device

How to use it

Add one or more images.
Set the limits the upload form asks for — e.g. “under 200 KB, 600×600, JPEG”.
Press Fix images. Each result shows its real size and dimensions, with a pass/fail check for every requirement.
Download files one by one or all together as a ZIP.

Input: JPEG, PNG, WebP, GIF (first frame), BMP, AVIF; HEIC in Safari. Output: JPEG, PNG, WebP, and AVIF where your browser supports it.

Output files contain no metadata (EXIF, GPS). Colours are converted to sRGB.
Animated images are only processed if you allow flattening to the first frame.
Images above 100 megapixels are refused to protect your device's memory.
PNG is lossless — to hit a small size limit, shrinking or a lossy format may be required.

How does it hit an exact file size?: It searches encoder quality with a bounded binary search (at most ~10 encodes), keeping the best result under your limit. If allowed, it shrinks dimensions when quality alone is not enough.
What if the limit is impossible?: You get the smallest result we could produce, clearly marked as not meeting the limit, with a suggestion.
Are my photos uploaded?: Everything happens in your browser. Your photos are never uploaded.