Image Upload Limit Checker

Choose an image, enter the upload limits from a form or website, and see which file rules pass before you try to submit it.

File size checkPixel limitsFormat and ratio checksNo upload

Upload limit checker

Image preview
Choose an image to see checks.
Choose an image to see checks.

How it works

  1. 1Choose an image from your device.
  2. 2Enter the maximum file size, width, height, target format and optional aspect ratio.
  3. 3Review each pass or fail item and use the linked tools to resize, compress or convert if needed.

Privacy and limits

  • The image is read in your browser and is not uploaded.
  • This checker compares file rules only; it does not judge content, identity, faces or official acceptance.
  • If the receiving site changes its rule, use the current rule shown by that site.

Upload rule notes

This checker compares the selected file with limits you enter for bytes, pixel dimensions, format and aspect ratio.

It is meant for upload forms that reject files before submission, so you can see the likely reason before trying again.

Common use cases

  • Checking a profile image against a form limit
  • Finding whether a CMS rejected size, pixels or format
  • Preparing an image before using a custom upload fixer

Check notes

  • File type comes from the browser and file name, so unusual files can need a manual review.
  • Aspect ratio checks use pixel dimensions.
  • The tool does not submit or upload the image.

Original test sample

  • Choose a 2400 x 1600 JPG and set a 1MB, 1200 x 1200 limit to see size and dimension failures.
  • Set target format to PNG for a JPG file and confirm the format row fails.

Frequently asked questions

Are my images uploaded?

No. ImgShrink processes selected images in your browser and does not upload them to a server.

Can this tool guarantee an exact file size?

No. Target compression gets close when possible, but the final bytes depend on image detail, dimensions, format and browser encoding.

Why is an output format unavailable or different?

The browser controls image decoding and export support. Some browsers may not export AVIF or may flatten unsupported transparency.

Source and compatibility notes

This tool works in the browser, so output support depends on what your browser can read and export.

Last checked: 2026-09-07

Notes
  • No server-side image processing is used.
  • Output format support depends on the browser.
  • Animated images and metadata are not treated as guaranteed preserved data.

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