Hash generatorGenerators

Hash generator. Five digests, text or file.

Type text or pick a file and get its MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes at once, as hex or Base64. Add a secret key for HMAC, or paste a checksum to see which hash it matches. Files up to 200 MB.

Cost to you

Free

Runs in your browser. No signup, no API call, no limit per hour.

browser
runs in: none
API calls: none
account

Use it now

Use the Hash generator here

It runs in your browser. Nothing you type is sent anywhere, there is no signup and no limit.

Input

Text to hash (read as UTF-8)Hash a file

HMAC with a secret keySigns the input with a key, as webhook signatures do.Uppercase hex

Output

Hashed in your browser. SHA runs on Web Crypto, MD5 in page code. Files are read locally and never uploaded. For passwords use bcrypt, scrypt or Argon2, not these.

Run it from your agent

Copy one prompt, give it to your agent.

Fill in the placeholder, paste it, and the agent runs the same job with current data on your looot account and shows the cost.

You give it: text or a file, and an optional hmac key.
Billed per call, nothing while your agent is idle.
The agent shows the price before it calls.

Prompt: Hash generator

Use looot to find which saved results changed between two runs. 1. Set up https://looot.ai/skill.md. 2. Search the catalog for [the endpoint I ran] and check its price before you call. 3. Run it again with the same input. 4. Take the SHA-256 of the new response body and compare it with this hash from last time: [hash]. 5. If they differ, list the fields that changed.

Give this to your agent

Setup command

set up looot - https://looot.ai/skill.md

What comes back

What your agent gets from sha256 hash generator

Field names as the providers return them. The exact set varies by endpoint, and your agent reads it from the catalog.

MD5, SHA-1, SHA-256, SHA-384 and SHA-512 digests
hex or Base64 output
HMAC digests
which hash a pasted checksum matches

Use it for

What people do with sha256 hash generator

Verify a download
Paste the SHA-256 from a release page and check your file matches.
Test webhook signatures
Compute an HMAC-SHA256 with your test secret to match a signature header.
Dedupe records
Hash a row or a document to get a stable key for spotting repeats.
Cache keys
Make a short, fixed-length key from a long prompt or URL.

Set up once

Three steps. Your agent does the rest.

Paste one prompt into your agent

Set up looot

Done, looot is connected.

Copy one prompt from /connect into Claude Code, Cursor, or any MCP agent. No SDK, no dashboard click-through first.

Your agent finds the right operation

Hunter$0.0265

Exa$0.0090

Diffbot$0.0032

The agent finds the operation it needs and sees the price first. It calls nothing blind.

You watch what it cost

Hunter$0.0265

Exa$0.0090

Diffbot$0.0032

Total$0.0387

Every call settles for its quoted price and lands in the ledger. You always know what ran and what it cost.

Keep going

Converters
Base64 encoder and decoder
Encode or decode Base64 for text and files, with UTF-8, the URL-safe alphabet and data URLs. Local only.
Free, no signupno limit
Converters
JWT decoder
Decodes a JWT header and payload and shows exp, iat and nbf as dates. Local only, no signature check.
Free, no signupno limit
Generators
UUID generator
Random v4 or time-ordered v7 UUIDs, up to 1,000 per batch, with copy and download. Also reads a pasted UUID.
Free, no signupno limit

FAQ

Questions about sha256 hash generator

Type or paste the text, or pick a file. The SHA-256 appears with the other four hashes as soon as you type. Text is read as UTF-8, the same as echo -n text | shasum -a 256.

Pick the file with Hash a file, then paste the checksum from the download page into the compare box. The matching algorithm is highlighted, or the page says nothing matches.

A hash that also takes a secret key, defined in RFC 2104. Webhook providers sign each request with an HMAC so you can check it came from them. Turn on HMAC, enter the key, and compare with the signature header.

Not for security. Practical collisions exist for both, so never use them for signatures or certificates. They still work as checksums against accidental corruption, which is why the page labels them checksums only.

Do not store passwords with any of these hashes. They are built to be fast, which makes guessing fast too. Use bcrypt, scrypt or Argon2 with a salt.

Hex is the usual form for checksums and git. Base64 is shorter and common in HTTP headers, such as Content-Digest and many webhook signatures. Both hold the same bytes.

Up to 200 MB. The file is read into memory in your browser, so very large files need a command line tool such as shasum or certutil.

No. SHA hashes run on the browser's Web Crypto API and MD5 runs in page code. Nothing leaves your machine.

For agents

tool: Hash generator
category: Generators
input: Text or a file, and an optional HMAC key
output: MD5, SHA-1, SHA-256, SHA-384 and SHA-512 digests, hex or Base64 output, HMAC digests, which hash a pasted checksum matches
price: per call, read live from the catalog on the web page
web tool: runs in the visitor's browser, no API call, free and unlimited
schedule: on demand
setup: https://looot.ai/skill.md
llms.txt: https://looot.ai/llms.txt
updated: 2026-10-14

markdown /free-tools/hash-generator.md

Run sha256 hash generator from your own agent.

Start your workspace, top up, and paste the prompt into the agent you already use. It runs the job with live data and shows the cost first.

Start your workspace See all free tools