Is SHA-256 safe for password hashing?

Not by itself. SHA-256 is too fast — an attacker can try billions of guesses per second. For passwords, use a slow function with salt like bcrypt, scrypt, or argon2. SHA-256 is appropriate for checksums, signatures, and content addressing.

What is the difference between SHA-256 and SHA-2?

SHA-2 is a family of hash functions. SHA-256 is one member, with a 256-bit output. Other family members include SHA-224, SHA-384, and SHA-512. SHA-256 is by far the most widely used in practice.

Can I hash a binary file?

Yes. Drag and drop any file onto the input area. The tool streams the file through the hash function, so even multi-gigabyte inputs hash in a reasonable time without exhausting browser memory.

Why are my command-line and browser hashes different?

Almost always a line-ending issue. Text files with CRLF line endings hash differently than the same file with LF endings. Some tools also strip a trailing newline. Hash the file as raw binary on both sides for consistency.

Is my input transmitted anywhere?

No. The hash is computed in your browser. Nothing is uploaded, logged, or analyzed.

SHA-256 Hash Generator — SHA-1, SHA-384, SHA-512 Online

Compute the SHA-256 hash of any text or file in your browser. Toova produces the 256-bit hex digest instantly, supports drag-and-drop for files, and runs entirely on your device. Useful for checksums, signatures, blockchain identifiers, and integrity checks.

Why SHA-256

SHA-256 is the workhorse hash function of the modern internet. TLS certificates, Bitcoin block hashes, package manager checksums, Docker image digests, code signing — all use SHA-256. It is collision-resistant in practice and fast enough to use on multi-gigabyte files. When a system asks for a strong cryptographic hash and does not specify, SHA-256 is the safe default.

Text and file hashing

Type or paste a string and the hash updates live. Drop a file and Toova reads it in chunks, so memory stays low even for very large files. The output is a 64-character lowercase hex string by default — switch to uppercase or Base64 if your destination expects that format. For HMAC variants where a secret key is involved, use the dedicated HMAC tool.

Local-only, zero uploads

Every hash is computed in your browser. Inputs never leave the page, and there is no telemetry on the content. The page works offline once it has loaded, which makes the tool safe for hashing internal documents, private artifacts, or anything covered by an NDA. Verify it yourself with the Network tab open.

Frequently Asked Questions

Is SHA-256 safe for password hashing?: Not by itself. SHA-256 is too fast — an attacker can try billions of guesses per second. For passwords, use a slow function with salt like bcrypt, scrypt, or argon2. SHA-256 is appropriate for checksums, signatures, and content addressing.
What is the difference between SHA-256 and SHA-2?: SHA-2 is a family of hash functions. SHA-256 is one member, with a 256-bit output. Other family members include SHA-224, SHA-384, and SHA-512. SHA-256 is by far the most widely used in practice.
Can I hash a binary file?: Yes. Drag and drop any file onto the input area. The tool streams the file through the hash function, so even multi-gigabyte inputs hash in a reasonable time without exhausting browser memory.
Why are my command-line and browser hashes different?: Almost always a line-ending issue. Text files with CRLF line endings hash differently than the same file with LF endings. Some tools also strip a trailing newline. Hash the file as raw binary on both sides for consistency.
Is my input transmitted anywhere?: No. The hash is computed in your browser. Nothing is uploaded, logged, or analyzed.