Tools / Spec checker

Spec checker

Check a batch of photos, vectors or clips against each marketplace's published technical requirements before you upload, so resolution, DPI, CMYK, codec and duration problems are caught here instead of in a rejection email. Files are read in your browser only.

Target marketplaces

Every selected marketplace is checked separately. At least one stays on.

Adobe Stock

4 MP minimum, RGB only, 45 MB per file, HD video at 23.98–60 fps.

Shutterstock

4 MP minimum, RGB JPG, 50 MB per file, 4K-friendly video 5–60 s.

Freepik

2 MP minimum for photos, RGB, 50 MB per file, HD video from 5 s.

123RF

4 MP minimum, RGB JPG, 25 MB per file, HD video 7 s and longer.

Show problems only

Hide files that pass everywhere.

Vector font and embedded-image results are a heuristic — hover the icon for what is actually detected.

Privacy that matches the implementation

Original files are not stored by Metadata World. To generate metadata, compressed previews or video keyframes are securely sent to the AI provider you choose.

This tool needs no API key and makes no AI call: only the header bytes of each file are read, inside this browser tab. Nothing is uploaded.

Read the privacy details

Drop JPG, PNG, TIFF, MP4, MOV, WebM, SVG, EPS or AI files here

Up to 500 files per batch · headers only, so large clips stay fast

Add files to get started. Each file is read locally: pixel dimensions, DPI and colour mode from image headers, resolution, frame rate, codec and duration for video, and embedded bitmaps or live text for vectors.