Are NanoTools completely free to use?

Yes, all basic tools on NanoTools are completely free to use with no registration required. We offer premium features for power users.

Is my data secure when using NanoTools?

Your files are processed securely and are automatically deleted after processing. We do not store your files or data on our servers.

Do I need to install any software to use NanoTools?

No installation required. All tools work directly in your browser on any device - computer, tablet, or smartphone.

What file formats are supported?

We support a wide range of formats including PDF, JPG, PNG, WebP, GIF, JSON, XML, CSV, and many more depending on the tool.

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Generate Image Hash Online - Image Fingerprint

Generate image hash online for free. Create unique fingerprints for photos. Compare image similarity.

Drop an image here or click to browse

image/* • Max 50MB

What This Tool Does

Generates MD5, SHA-1, and SHA-256 cryptographic hashes
Creates perceptual hashes for similarity detection
Produces unique fingerprints for each image
Verifies image integrity and authenticity
Enables duplicate image detection
Processes hashing entirely in your browser

How to Use

1
Upload image
Select the image file you want to hash
2
Generate hashes
Click to create cryptographic and perceptual hash values
3
View hash values
See MD5, SHA-1, SHA-256, and perceptual hash results
4
Copy or save
Copy hash values for verification or storage purposes

How it works

Upload image

Select the image file you want to hash

Generate hashes

Click to create cryptographic and perceptual hash values

View hash values

See MD5, SHA-1, SHA-256, and perceptual hash results

Copy or save

Copy hash values for verification or storage purposes

Use Cases

Verifying image file integrity after transfers or downloads
Building image deduplication systems for photo libraries
Implementing content verification for digital asset management
Creating unique identifiers for image tracking systems
Detecting near-duplicate images in large collections
Ensuring image authenticity for legal or archival purposes

Frequently Asked Questions

What is the difference between cryptographic and perceptual hashes?

Cryptographic hashes change completely with any pixel change. Perceptual hashes stay similar for visually similar images, enabling duplicate detection.

Can I use hashes to find similar images?

Yes, perceptual hashes allow comparison between images to find visually similar or near-duplicate files.

Are the hash values secure?

Cryptographic hashes (SHA-256) are secure for verification. All processing happens locally in your browser.

Will editing an image change its hash?

Cryptographic hashes change with any modification. Perceptual hashes remain similar for minor edits like resizing or compression.

What hash algorithm should I use?

Use SHA-256 for security and verification. Use perceptual hashing for finding similar images.