DevStash
Your developer toolkit, in orbit.
Fast, free, and privacy-friendly utilities for everyday development tasks. No sign-up, no tracking — just tools that work.
JSON Formatter
Format, validate, and minify JSON with syntax highlighting and tree view
Regex Tester
Test regular expressions with live matching, flags, and capture groups
Base64 Encoder/Decoder
Encode and decode Base64 with text and file support
Cron Expression Builder
Build cron expressions with dropdowns and see the next scheduled runs
UUID Generator
Generate UUID v4 and v7 with bulk generation and format options
URL Encoder/Decoder
Encode and decode URLs with component and full encoding modes
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes for text and files
JWT Decoder
Decode JWT tokens with header/payload display and expiration check
Color Converter
Convert between HEX, RGB, HSL, and HSV with a color picker and contrast checker
Timestamp Converter
Convert between Unix timestamps and human-readable dates with timezone support
Markdown Preview
Write Markdown and see a live rendered preview side by side
SQL Formatter
Format, beautify, and minify SQL queries with syntax highlighting
Diff Checker
Compare two texts side by side and see additions, removals, and changes
Lorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words
CSS/JS Minifier
Minify and beautify CSS and JavaScript code with size comparison
YAML ↔ JSON Converter
Convert between YAML and JSON formats bidirectionally
Chmod Calculator
Calculate Unix file permissions with an interactive checkbox grid
HTTP Status Codes
Searchable reference of all HTTP status codes with descriptions
Token Counter
Estimate token counts for GPT-4, Claude, Gemini, and Llama models
AI Model Pricing
Compare API costs across GPT-4, Claude, Gemini, and more AI models
Text Splitter
Split text into chunks for RAG pipelines with configurable size and overlap
Prompt Template Builder
Create prompt templates with {{variables}} and preview the final prompt