Which platforms' rules are included?

The major microstock destinations — Adobe Stock, Shutterstock, Freepik, 123RF and others — each with their own limits for images, video and vectors, so one pass tells you where a file is safe to submit.

Does it check video files too?

Yes. Clips are probed for resolution, frame rate, duration, codec and the presence of an audio track, which together account for most video rejections.

What if a file fails a check?

The reason is stated in plain terms, and most failures are fixable: resize or recompress an image in the bulk converter, or strip an unwanted audio track with the audio remover, then re-check the file.

Are my files uploaded anywhere?

No. Files are inspected in your browser and never leave your device, which is why the check is instant even on large video files.

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.

About the spec checker

Every marketplace publishes a different set of hard limits — minimum megapixels, maximum file size, accepted colour spaces, allowed codecs and frame rates. Breaking one of them means an automatic rejection that has nothing to do with the quality of the work. This checker reads your files locally and tells you which platforms will accept each one before you spend an upload on it.

What gets validated

For stills: pixel dimensions and total megapixels, file size in megabytes, bit depth, colour profile, and whether the format is one the platform accepts. Adobe Stock's four-megapixel floor and Shutterstock's file-size ceiling catch people out constantly, and both are checked here.

For video: resolution, frame rate, duration, codec and container, plus whether an audio track is present. For vectors: the presence of a valid EPS or SVG structure, and whether embedded raster content is hiding inside a supposedly scalable file, which is one of the most common vector rejections.

How to use it

1. Drop in a batch
Mix images, clips and vectors freely. Each file is probed in the browser; nothing is uploaded, so unreleased work never leaves your machine.
2. Choose the platforms you sell on
Toggle Adobe Stock, Shutterstock, Freepik, 123RF and the rest. Each file is then checked against every selected rule set at once.
3. Read the grid
A row per file, a column per platform, and a clear pass or fail with the exact reason — 'below 4 MP for Adobe Stock', not a generic warning.
4. Fix and export
Send undersized or oversized images to the bulk converter to resize or recompress, then export the results as CSV for your records.

Why check before uploading

A rejected file is not just a lost sale. On several platforms a poor acceptance ratio slows down how quickly your later submissions get reviewed, so avoidable technical failures cost you time on every batch that follows. Checking locally takes seconds and removes an entire category of rejection permanently.

Questions about this tool

Which platforms' rules are included?: The major microstock destinations — Adobe Stock, Shutterstock, Freepik, 123RF and others — each with their own limits for images, video and vectors, so one pass tells you where a file is safe to submit.
Does it check video files too?: Yes. Clips are probed for resolution, frame rate, duration, codec and the presence of an audio track, which together account for most video rejections.
What if a file fails a check?: The reason is stated in plain terms, and most failures are fixable: resize or recompress an image in the bulk converter, or strip an unwanted audio track with the audio remover, then re-check the file.
Are my files uploaded anywhere?: No. Files are inspected in your browser and never leave your device, which is why the check is instant even on large video files.