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Hash Generator

🌐 Global

SHA-256, SHA-384, SHA-512, SHA-1 (file or text).

Algorithm

Backed by the browser's SubtleCrypto API. Inputs never leave your device. SHA-1 is included for compatibility with legacy systems but is no longer collision-resistant — prefer SHA-256+ for security use.

Hash text

SHA-256 (text)

—

Hash file

Drop a file here or click to choose

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About Hash Generator · বিস্তারিত

Calculates SHA-1, SHA-256, SHA-384 or SHA-512 hashes of typed text or of a file you choose, using the browser's built-in SubtleCrypto API. Output is lowercase hexadecimal, and the file is read on your device rather than uploaded.

A hash is a fixed-length fingerprint of data. Change one comma in a document or one byte in a download and the hash changes completely, which makes hashes the standard way to check that a file arrived intact or that two copies are identical. SHA-256 produces 64 hex characters, SHA-384 96 and SHA-512 128.

Text is hashed as UTF-8 bytes, so the same sentence gives the same hash here as in a command line like sha256sum, provided there is no extra newline at the end. SHA-1 is included for older systems such as legacy checksums, but it is no longer collision-resistant, so prefer SHA-256 or higher for anything security-related.

How to use it · কীভাবে ব্যবহার করবেন

  1. Choose the algorithm

    Tap SHA-1, SHA-256, SHA-384 or SHA-512. Both text and file results follow this choice.

  2. Hash text

    Type or paste into the Hash text box; the hash updates as you type.

  3. Hash a file

    Drop a file on the Hash file area or click to choose one. Its name, size and type are shown with the hash.

  4. Copy and compare

    Press Copy and compare with the checksum published by the software vendor or sent by a colleague.

When it helps · কখন কাজে লাগে

Checking a download
Many software sites publish a SHA-256 checksum next to an installer or ISO. Hash the downloaded file and compare before installing.
Proving a document has not changed
Record the hash of a signed contract PDF or exam result file; anyone can later re-hash the file and confirm it is the same version.
Developer tasks
Generate a SHA-256 for an ETag, a cache key or a test vector without opening a terminal.

Example: the sample sentence

The page starts with "The quick brown fox jumps over the lazy dog". Its SHA-256 is d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592 and its SHA-1 is 2fd4e1c67a2d28fced849ee1bb76e7391b93eb12. Add a single full stop at the end and both hashes change entirely.

What you get

  • SHA-1, SHA-256, SHA-384, SHA-512
  • Hash typed text live, as UTF-8
  • Hash a file by drag-and-drop or file picker
  • Shows file name, size in KB and type
  • Lowercase hex output with copy buttons
  • Uses the browser's Web Crypto API; the file is read locally

বাংলায়: হ্যাশ জেনারেটর (SHA-256)

কোনো লেখা বা ফাইলের SHA-256, SHA-384, SHA-512 বা SHA-1 হ্যাশ এখানে বের করা যায়। হ্যাশ হলো ডেটার একটা আঙুলের ছাপের মতো; ফাইলে একটা অক্ষর বদলালেও হ্যাশ পুরো বদলে যায়। ডাউনলোড করা সফটওয়্যার ঠিকঠাক এসেছে কি না, বা দুইটা ফাইল একই কি না তা মিলিয়ে দেখতে কাজে লাগে। ফাইল আপনার ডিভাইসেই পড়া হয়, কোথাও আপলোড হয় না।

ডাউনলোড করা ফাইল আসল কি না কিভাবে বুঝব?

ওয়েবসাইটে দেওয়া SHA-256 চেকসাম কপি করুন, তারপর এখানে ফাইলটা দিয়ে হ্যাশ বের করে দুটো মিলিয়ে দেখুন। হুবহু মিললে ফাইল ঠিক আছে।

হ্যাশ থেকে কি আসল লেখা বের করা যায়?

না, হ্যাশ একমুখী। উল্টো করে মূল লেখা ফেরত পাওয়া যায় না।

Questions people ask · প্রশ্ন ও উত্তর

Is my file uploaded to calculate the hash?

No. The file is read by your browser and hashed with the built-in SubtleCrypto API on your device; nothing is sent to a server.

Why doesn't my hash match the one from the command line?

Usually because of an invisible difference: a newline at the end of the text (echo adds one), a different encoding, or a different algorithm. For files, make sure you selected the same algorithm as the published checksum.

Which algorithm should I use?

SHA-256 for most checksums and fingerprints. SHA-384 or SHA-512 if a system asks for them. Use SHA-1 only to match an older system, since it is no longer collision-resistant.

Can I hash a password with this?

You can compute a hash, but a plain SHA hash is not a safe way to store passwords. Password storage needs slow, salted algorithms such as bcrypt or Argon2, which this tool does not provide.

Does it support MD5?

No. The browser's Web Crypto API does not offer MD5, and this tool only uses that API.

Can a hash be decoded?

No. Hashing is one-way. You can only check a guess by hashing it and comparing the result.

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