Free tool

Image Format Inspector

Detect the real file format from image headers.

Header checkInstantNo uploads

100% Free to use
No credit card required
Works offline in your browser

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Why it helps

Verify file types

Check if a file extension matches the real format.

Fast results

Reads file headers locally for privacy.

Image

Image format inspector

Header check

Upload image

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How to use Image Format Inspector for Maximum Social Media Growth

Supercharge your online reach with the Image Format Inspector. Specifically built to help marketers, SEO specialists, and creators detect the real file format from image headers. to boost algorithm visibility and conversion rates.

1. Select & Input

Upload your file or enter content directly in your web browser. 100% private and runs locally on your device.

2. Optimize & Format

Adjust settings, crop dimensions, or refine text tailored for social media algorithms and resolution standards.

3. Publish & AutoPost

Download your high-quality asset or push directly to Auto Poster AI to schedule automated posts across all channels.

Verify file types

Check if a file extension matches the real format.

Fast results

Reads file headers locally for privacy.

Why Formatting Consistency Matters

Social media algorithms favor content that meets platform recommendations. Using optimized tools like Image Format Inspector helps prevent compression artifacts, aspect ratio distortion, and text cut-offs on mobile feeds.