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Online Hash Generator for a File

Select a local file and generate common checksum hashes (MD5, SHA-1, SHA-256, SHA-384, SHA-512) directly in your browser. The file is processed locally—nothing is uploaded.

Category: Developer · URL: /tools/online-hash-generator-for-a-file.html
No file selected.
Algorithms
SHA hashes use the browser crypto API. MD5 is computed locally in JavaScript (not cryptographically secure).
Tip: For text input hashing (not files), use Online Hash Generator.
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Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Use this tool to compute one or more hashes from a local file.

  1. Click Choose file and select your file.
  2. Select the hash algorithms you need.
  3. Click Generate hashes.
  4. Copy the results (or compare with a known checksum).
Keywords this page targets (natural cluster): online hash generator for a file, file hash generator online, generate sha256 checksum for file, generate sha1 hash for file, generate md5 hash for file, file checksum calculator, hash a file in browser, sha512 file hash online, sha384 file checksum, verify file hash checksum, compare file hash values, how to get hash of a file, create checksum for download, file integrity check hash, md5 checksum tool for file, sha256sum equivalent online, calculate hash without uploading, hash generator client side, file fingerprint hash, checksum generator for developers
Secondary intents covered: Verify a downloaded file matches a published checksum, Generate SHA-256 for release assets before sharing, Compare two files by checking if their hashes match, Create MD5/SHA hashes for internal artifact tracking, Copy hashes in a clean format for tickets or logs, Check file integrity after transfer or storage, Generate multiple hashes at once for compatibility, Normalize output case (lower/upper) for tooling

FAQ

Do you upload my file to a server?

No. Hashing runs locally in your browser and the tool makes no network requests.

Which hash should I use: MD5, SHA-1, or SHA-256?

Use SHA-256 (or stronger) for integrity checks; MD5 and SHA-1 are mainly for legacy compatibility.

Why can hashing a large file be slow?

The browser has to read the entire file and compute the digest; large files can be memory-heavy, especially on mobile.

Are the results compatible with md5sum / sha256sum?

Yes, the hex output matches standard tooling (case-insensitive).

Can I hash multiple files at once?

This page hashes one file at a time; run it again for each file.

What output format do you use?

Hexadecimal digest output (lowercase by default), with an optional uppercase toggle.

Why do my hashes differ from someone else’s?

Even a one-byte difference changes the hash; confirm you selected the exact same file and algorithm.