Which tool should I use?
Decode JWTs without sharing tokens. Diff two snippets before a commit. Encode Base64 payloads. Humanize cron for ops and CI.
DevsDrill
Client-side developer tools. Fast, private, no upload.
Pick a tool
Character Counter
Count characters, words, lines, paragraphs and UTF-8 bytes as you type.
URL Parser & Diff
Parse URLs into parts and compare two links to spot query and path differences.
HTML Online Viewer
Live side-by-side preview with formatter, highlighting and mobile frames.
JWT Decoder
Inspect header and payload locally. Your token never leaves the browser.
JSON ↔ CSV
Convert JSON arrays to CSV tables and CSV back to JSON.
SQL Formatter
Beautify messy SQL with indentation and keyword highlighting.
Regex Tester
Test regular expressions live and explain each token.
Curl to Code
Turn curl into Fetch, Axios, Python, Go, PHP or C#.
Diff Checker
Compare two texts or code blocks with clear additions and deletions.
Base64 Encode / Decode
Encode or decode text safely with Unicode support.
Cron Generator
Build cron expressions or turn 0 0 * * * into plain English.
GUID Generator
Generate UUID v4 / GUID values. Bulk create, format and validate locally.
Why DevsDrill?
Every tool runs in your browser. No accounts, no server-side processing of secrets — ideal for JWT tokens, diffs and encodings.
Private by design
Developer utilities often handle secrets. DevsDrill never sends your inputs to our servers.
FAQ
Are these tools free?
Yes. Optional PayPal or PIX donations help keep the site online.
Do you upload my data?
No. JWT, Base64, diffs and cron parsing happen entirely in your browser.
Keep DevsDrill online
If a tool saved you time, a tip helps cover hosting.
Pay with PIX using the random key below.