100% Private & Client-Side

Developer Tools That
Respect Your Privacy

11 free tools for developers and SREs. All processing happens in your browser — no uploads, no tracking, no accounts required.

Client-side only
Zero data collection
Always free
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Popular Tools

Get started with these frequently used utilities

SSL Certificate Decoder

Decode and analyze SSL/TLS certificates instantly

JWT Decoder

Decode JSON Web Tokens and view claims

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes

Base64 Encoder/Decoder

Encode and decode Base64 strings and files

JSON Formatter

Format, beautify, and validate JSON data

Browse by Category

Tools organized by use case

Encoding & Decoding

2

Encode and decode data in various formats

Security & Crypto

3

SSL certificates, JWT tokens, hashes, and more

Formatting & Validation

2

Format and validate JSON, YAML, XML, and other data

DevOps Tools

2

Cron expressions, timestamps, DNS, IP calculators

Text Processing

2

Text manipulation, diff, sorting, and generation

Why devutils.sh?

Privacy-first tools that respect your data

100% Private

All tools run in your browser. Your data never touches our servers.

Instant Results

No uploads, no waiting. Client-side processing means instant results.

Always Free

No accounts, no paywalls, no limits. All tools are free forever.