Secure File Hash Generator
Generate SHA-256 and SHA-512 checksums instantly in your browser to verify file integrity. 100% private with no server uploads.
Click or Drag a File Here
Supports ISO, ZIP, PDF, EXE and all other file types
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Checksum Verifier
Paste the official hash provided by the software developer below to verify if your file matches exactly.
🔐 About Hash Generator
A file hash (or checksum) is a digital fingerprint of a file. When you download a large file like an OS installer or software archive, developers provide an official hash. By dropping your file here, you can generate its hash and compare it. If the hashes match, your file is authentic and safe. If they differ, the file is corrupted or tampered with.
File Hashing & Integrity FAQ
A hash is a unique string of letters and numbers generated by running a file through a mathematical algorithm. Even changing one pixel in an image changes the entire hash.
No. This tool uses the HTML5 Web Crypto API. The cryptographic math is performed locally inside your computer's RAM. No data ever leaves your device.
Checking the SHA-256 hash ensures that the file you downloaded is exactly the same as the original, meaning it hasn't been corrupted during download or infected by malware.
SHA-256 produces a longer, mathematically stronger signature. SHA-1 is an older legacy format that is faster but considered vulnerable to modern collision attacks.
To prioritize security and pure zero-dependency performance, we utilize the browser's native Web Crypto API, which officially champions the highly secure SHA family over the deprecated MD5 standard.
In secure formats like SHA-256, the probability of two different files producing the exact same hash (a collision) is practically zero.
If the verifier turns red, it means the file you dropped does not match the official hash. Do not install or execute that file—it is corrupted or tampered with.
Since the processing happens in your browser's memory, you can safely hash files up to a few gigabytes depending on your computer's available RAM.
Reputable software developers (like Ubuntu, Microsoft, or open-source projects) usually publish the SHA-256 string right next to the download button on their website.
No. Hashing is a one-way cryptographic function. You cannot turn a SHA-256 string back into a .zip or .iso file.