Dev tools that feel fast
because they run in your browser.
70+ tools. Zero uploads. Complete privacy. Format JSON, encode Base64, generate UUIDs and test regex — all directly in your browser without creating an account or sending data anywhere.
Most Popular
View all →JSON Formatter
Beautify and format JSON with configurable indentation. Produces clean, readable output instantly.
Base64 Encode / Decode
Encode text to Base64 or decode Base64 strings back to plain text.
JWT Decoder
Decode and inspect JWT tokens. View header, payload, and expiration. Works entirely in the browser.
Hash Generator
Generate cryptographic hashes (MD5, SHA-1, SHA-256, SHA-512) for any text input.
UUID Generator
Generate cryptographically secure UUIDs (v4) in bulk. Zero server calls.
Password Generator
Generate strong, random passwords with customizable length and character sets.
Regex Tester
Test regular expressions against text with real-time match highlighting.
Diff Checker
Compare two text blocks and show additions, deletions and changes.
How it works
Three steps, zero friction
Pick a tool
Search by name or browse 70+ tools grouped by category — JSON, encoding, security, regex and more.
Paste your data
Your input is processed instantly, entirely inside your browser. Nothing leaves your device.
Copy the result
Get clean, formatted output with one click. No watermarks, no size limits, no account required.
Trust & Privacy
Dev tools that feel fast because the workflow stays simple.
DevMe keeps the highest-friction dev tasks close to the browser: format JSON, encode strings, hash passwords and test regex — without creating an account or adding a watermark.
Secure processing
Core tools run locally in the browser when possible. Your data never leaves your device.
Automatic cleanup
No history stored. Close the tab and your data is gone.
No watermark
Free personal exports stay clean and ready to use.
Built for speed
Focused tools, direct downloads and no dashboard detours.
DocsMe ecosystem
DevMe is part of the DocsMe ecosystem.
A DocsMe initiative created to bring together useful, accessible, and reliable tools for digital work.
Loved by developers
What developers are saying
“I keep DevMe open all day. JSON formatter and UUID generator alone save me 10 minutes every morning.”
“Finally a tool site that doesn't ask me to sign up just to decode a Base64 string. Zero friction.”
“The regex tester with live match highlighting is the best I've found. I replaced three bookmarks with just this one.”
“Love that everything runs locally. I can paste API keys and secrets without worrying about server-side logging.”
“JWT decoder, URL encoder, and HMAC generator in one place. My team made it our default for debugging auth issues.”
“The SQL and JSON formatters are crisp. I use DevMe before every PR to clean up any data payloads in my test fixtures.”
All Categories
Browse all →JSON
Format, validate, convert and diff JSON data.
10 tools
XML
Format, validate, convert and test XML documents.
4 tools
YAML
Format, validate and convert YAML files.
3 tools
CSV
View, format and convert CSV data.
3 tools
Encoding
Encode and decode Base64, URL, HTML, JWT and more.
6 tools
Security
Generate hashes, UUIDs, passwords and HMAC tokens.
5 tools
Regex
Test, generate and explore regular expressions.
2 tools
Text
Diff, transform, count and manipulate text.
10 tools
Date & Time
Convert timestamps, epochs, timezones and cron expressions.
4 tools
Web
Generate meta tags, parse URLs, preview Open Graph and more.
5 tools
CSS
Minify, beautify and generate CSS utilities.
5 tools
HTML
Format, minify, preview and convert HTML.
3 tools
JavaScript
Format, minify and inspect JavaScript code.
2 tools
SQL
Format, minify and beautify SQL queries.
2 tools
Color
Pick, convert, generate palettes and check contrast.
4 tools
Image
Convert images, optimize SVGs, generate favicons and QR codes.
4 tools