Hash Generator
Featured
Generate SHA-256, SHA-384, and SHA-512 hashes.
- On your device
- No signup
Developer topic guide
Checksum and encoding tools
Generate hashes, encode Base64, and create UUIDs—free encoding utilities on your device.
5 free tools in this guide — pick one below to get started.
Tools in this guide(5)
Open a tool to calculate, convert, or edit — no signup required.
Base64 Encoder & Decoder
Featured
Encode and decode text with Base64.
- On your device
- No signup
UUID Generator
Featured
Generate UUIDs for apps, tests, and databases.
- On your device
- No signup
JWT Decoder
Featured
Decode JWT header, payload, and expiry—including Bearer tokens—on your device.
- On your device
- No signup
File Checksum Calculator
Featured
Generate SHA-256 file checksums on your device.
- On your device
- No signup
- Stays on your device
Overview
Encoding utilities handle checksums, opaque IDs, and shareable codes during development and QA. This topic guide groups Utilnivo tools so you can move from rough estimates to a concrete next step without hunting across categories.
Start with the tool that matches your immediate question—hash generator, base64 encoder, uuid generator, jwt decoder, file checksum—then open related tools, workflows, or long-tail pages when you need comparisons, exports, or follow-up checks.
Outputs are educational. Confirm numbers with professionals, instructors, or platform requirements before you sign, submit, or publish.
How to choose
- Hash Generator → hash-generator.
- Base64 Encoder → base64-encoder.
- Uuid Generator → uuid-generator.
- Jwt Decoder → jwt-decoder.
- File Checksum → file-checksum.
Frequently asked questions
Who is Checksum and encoding tools for?
Developers and DevOps engineers generating test data and verifying file integrity. Start with hash generator, base64 encoder, uuid generator, then open related topic guides when your task spans multiple steps.
Which tool should I use first in Checksum and encoding tools?
Use the how-to-choose list on this page—it maps common tasks to specific tools. Encoding utilities handle checksums, opaque IDs, and shareable codes during development and QA.
Are these tools free?
Yes. Utilnivo tools are free for standard browser use with no account required.
Is my data stored online?
Calculations and file processing for standard tools run on your device unless a page explicitly performs a network lookup.
Step-by-step workflows (3)
Multi-step guides that chain tools from this topic—follow numbered steps instead of guessing tool order.
- Verify a download with checksumsHash the file you downloaded, compare digests, and encode strings when docs ship Base64.3 steps
- Provision staging credentialsGenerate passwords, UUIDs, and hashes for dev, QA, and fixture data.3 steps
- Debug a JWT or API tokenDecode a bearer token, pretty-print JSON claims, and inspect Base64 segments.3 steps