By AlgoCrew
Developer tools.
Private by design.
22 utilities — formatters, converters, generators — that run entirely in your browser. No signup, no uploads, no telemetry.
- 22
- free tools
- 100%
- client-side
- $0
- forever
Browse all tools
22 tools shown
Developer Utilities
- Developer Utilities
JSON Formatter & Validator
Beautify, minify, and validate JSON instantly in your browser.
Open tool - Developer Utilities
JSON → TypeScript
Generate TypeScript interfaces from any JSON payload.
Open tool - Developer Utilities
JWT Decoder
Decode and inspect JWT header, payload, and claims.
Open tool - Developer Utilities
Base64 Encoder / Decoder
Encode or decode Base64 text and data URLs.
Open tool - Developer Utilities
UUID Generator
Generate cryptographically random v4 UUIDs in bulk.
Open tool - Developer Utilities
Cron Expression Builder
Build and explain cron schedules in plain English.
Open tool
Frontend & Web
- Frontend & Web
CSS Gradient Generator
Design linear and radial gradients with live CSS output.
Open tool - Frontend & Web
Box-Shadow Generator
Craft layered CSS box-shadows with a live preview.
Open tool - Frontend & Web
Color Contrast Checker
Check WCAG AA/AAA contrast ratios for any color pair.
Open tool - Frontend & Web
SVG → JSX
Convert SVG markup into clean React JSX components.
Open tool - Frontend & Web
Favicon Generator
Turn an image into a full favicon set with HTML tags.
Open tool - Frontend & Web
Meta Tag & OG Previewer
Preview Google, Twitter, and Open Graph cards live.
Open tool
AI & Vibecoding
- AI & Vibecoding
Token Counter & Cost Estimator
Count LLM tokens and estimate API cost per model.
Open tool - AI & Vibecoding
Prompt Template Builder
Build reusable LLM prompts with typed variables.
Open tool - AI & Vibecoding
.env Example Generator
Generate a safe .env.example from your real .env.
Open tool - AI & Vibecoding
Regex Tester & Explainer
Test regex with live matches and a plain-English breakdown.
Open tool
Converters & Formatters
- Converters & Formatters
Case Converter
Convert text between camel, snake, kebab, title, and more.
Open tool - Converters & Formatters
Markdown → HTML
Convert Markdown to clean HTML with a live preview.
Open tool - Converters & Formatters
CSV → JSON
Convert CSV to JSON with header detection.
Open tool - Converters & Formatters
Timestamp / Epoch Converter
Convert Unix timestamps to dates and back, any timezone.
Open tool - Converters & Formatters
Image Compressor
Compress and resize images locally without quality loss.
Open tool - Converters & Formatters
QR Code Generator
Generate downloadable QR codes for any text or URL.
Open tool
Built by AlgoCrew
Need more than a tool? Let's build it together.
AlgoCrew is a full-stack software agency shipping web, mobile, cloud, and AI products. If Vibecode saved you time today, imagine what our team could do for your roadmap.