How Kalyvor keeps your files private
Encryption in transit, immediate deletion and what browser-side processing actually means.
4 min read
Security utilitiesFreeFastPopular
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384 or SHA-512 hashes from pasted text or a local file — entirely in your browser. Nothing is ever uploaded.
- instantaverage
- In-browserprocessing
- Zerouploads
- Runs in your browser
- Nothing is uploaded
- No signup required
Security utilities
Hash Generator
Algorithm
Input
Output
The hash appears here.
Ln 1, Col 1
Waiting for input
Paste, upload or type to begin.
Shortcuts⇧⌘CCopy output⌘LClear input
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Base64 Encoder / Decoder
FreeEncode text to Base64, or decode it back, instantly.
URL Encoder / Decoder
FreePercent-encode a string for a URL, or decode one back.
Password Generator
FreeBuild a strong random password with the character rules you need.
UUID Generator
FreeGenerate RFC 4122 UUID v4 values, one at a time or up to 50 at once.
JSON Formatter
FreePretty print and format JSON instantly, with precise error positions.
JWT Decoder
FreeDecode JWT tokens safely in your browser — header, payload and expiry.
Why Kalyvor
Built for people who value their time
Every security tool is fast, private and genuinely free — no dark patterns, no surprises.
Fast cloud processing
Jobs run on dedicated workers and finish in seconds — no queue, no spinner you can go make coffee to.
Auto file deletion
Everything you upload is erased the moment the job finishes. Nothing is written to long-term storage, so there is no retention period to wait out.
Works everywhere
Desktop, tablet or phone, any modern browser. Nothing to install, no plugins, no extensions.
Batch processing
Drop in a folder's worth of files and run the whole set through one tool in a single pass.
Privacy first
Encrypted in transit, never used to train models, never sold. Many tools never send the file at all.
No installation
Open a tab and go. No account needed to start, no download, no licence key to hunt for.
How it works
Hash Generator in three steps
No account, no installation, no manual. It takes about as long to do as it does to read.
- 01
Paste text or choose a file
Type or paste text directly, or switch to the File tab and pick anything on your device — no restriction on file type.
- 02
Pick an algorithm
SHA-256 by default. SHA-1/256/384/512 use the Web Crypto API; MD5 is legacy.
- 03
Copy the hash
The digest is ready to copy or download the moment it finishes — usually instantly.
Questions
Frequently asked questions
Everything worth knowing before you run your first Hash Generator job. Still stuck? Talk to support.
Helpful articles
Guides and walkthroughs for getting more out of Hash Generator.
Batch processing: run 100 files at once
A practical walkthrough of queueing large jobs without babysitting the tab.
6 min read
Choosing the right tool for the job
A short decision guide for when two tools look like they do the same thing.
5 min read
Getting started with Kalyvor
From first upload to finished download in under a minute — the whole flow.
3 min read
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- instant average
- Secure processing
- No sign-up
- Free to start