Hash Generator
A secure browser-based hashing tool using the Web Crypto API for generating and verifying cryptographic hashes without uploading data to any server.
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使い方
- 対応機能はブラウザ優先
- 基本利用は登録不要
- サーバー処理ツールでは、アップロードファイルの自動削除ポリシーを適用する想定です。
信頼とプライバシー
Free online hash generator that creates SHA-256, SHA-512, and other hashes for text and files — no signup, no upload, works in your browser.
よくある質問
Is Hash Generator really free?
Yes, completely free with no signup, no limits, and no data sent to any server.
Is it safe to hash sensitive data online?
Yes. The tool uses the Web Crypto API and all computation happens entirely in your browser. No data is ever transmitted to a server.
What's the best free hash generator online?
AllUtil's Hash Generator supports SHA-1, SHA-256, SHA-384, and SHA-512 for both text and files using the Web Crypto API — all in your browser with no uploads and no signup.
Is this secure for verifying file integrity?
Yes. The tool uses the Web Crypto API which provides the same cryptographic primitives used by browsers for TLS. All computation is local.
Can I hash files?
Yes. Switch to File Input mode to hash files up to 100 MB directly in the browser without uploading anything.
Why is this the best free hash generator?
This hash generator uses the Web Crypto API to produce SHA-1, SHA-256, SHA-384, and SHA-512 hashes for both text and files. It provides cryptographically standard output with the same algorithms used in TLS and code signing — entirely in the browser.
Key Features
- Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes
- Hash text input or files up to 100 MB
- Compare hash values for file integrity verification
- Copy hash output in uppercase or lowercase hex
- Real-time hashing as you type for text input
- Uses the browser's native Web Crypto API
- No file size restrictions for text hashing
Common Use Cases
- Verify file integrity after downloading software
- Generate checksums for data transfer verification
- Create content hashes for cache-busting strategies
- Compare file hashes to detect modifications
- Generate hashes for password storage workflows
- Verify document authenticity with SHA-256 fingerprints
How It Compares
Command-line hash tools require terminal knowledge, and online hash generators typically upload your files to their servers. This tool uses the browser's built-in Web Crypto API for secure, local hashing with no file uploads and professional-grade cryptographic output.
Privacy & Security
All hashing is performed locally using the Web Crypto API. Your text and files never leave your device. Safe for sensitive and confidential data.
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