All tools are provided for informational and educational purposes. Processed data is stored fully inside your browser memory and never uploaded to our servers.
Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes instantly.
Runs in your browser
Your files and text are processed locally in your browser and are not uploaded.
About Hash Generator
A Hash Generator uses mathematical algorithms to map arbitrary-sized data inputs to fixed-size bit strings. Since cryptographic hash functions are one-way (irreversible), they are widely used for integrity checks, digital signatures, and database indexing.
Definition: Cryptographic Hash Function
A mathematical function that converts input data into a unique string of hexadecimal characters of a fixed length, designed to be one-way, collision-resistant, and deterministic.
Inputs and Outputs
Required Inputs
- Source InputPaste text or drop files to be hashed.
- AlgorithmSelect from MD5, SHA-1, SHA-256, SHA-384, or SHA-512.
Expected Outputs
- Hash OutputThe computed hexadecimal checksum.
- Input DetailsTechnical specifications showing character length and byte size.
Who Uses the Hash Generator?
File Integrity Verification
Verify that a downloaded installer matches the publisher's published SHA-256 hash.
API Secret Signatures
Generate signatures for webhooks and API authorization headers.
Database Key Creation
Pre-compute hashes for lookups or secure token validation.
Password Checksum Verification
Inspect test credentials or check passwords locally before seeding a DB.
How to Use the Hash Generator
- 1Select the target cryptographic algorithm (e.g., SHA-256).
- 2Type or paste your text input, or drag-and-drop a file.
- 3The hash checksum is automatically generated and updated in real-time.
- 4Click the copy button to capture the hexadecimal hash output.
Quick Facts
Privacy & Security Guarantee
All hashing functions run client-side. Your inputs, secrets, and files are processed strictly inside your browser and never sent to our servers.
Frequently Asked Questions
Can a hash be reversed back into the original text?
No. Cryptographic hashes are designed as one-way functions. They cannot be decoded back.
Is it safe to hash sensitive passwords here?
Yes, because the hashing library executes 100% locally in your browser. No data leaves your machine.
What is the difference between SHA-256 and MD5?
MD5 is a legacy 128-bit hash algorithm that is broken for cryptographic security due to practical collision vulnerabilities (RFC 6151); it is suitable only for non-security file checksums. SHA-256 is an approved NIST standard (FIPS 180-4) with 128-bit collision resistance and zero known practical collisions. Read our detailed <a href="/guides/md5-vs-sha256" class="text-pk-primary hover:underline">MD5 vs SHA-256 guide</a>.
Can I hash binary files like images or ZIPs?
Yes, you can upload files to generate their SHA-256 or MD5 integrity checksums.
Do you store my hashed files?
No. Your files are processed locally as an ArrayBuffer in browser memory and are never uploaded to any server.
Is the hash output uppercase or lowercase?
The generated hash outputs are displayed in standard lowercase hexadecimal notation.