RUN:DEVEL:RUN - High-Performance Online Developer Tools

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text or files. 100% client-side, no data ever leaves your browser.

Convert between application.yml and application.properties. Supports nested keys, list items, and Spring Boot configs — 100% in-browser.

Convert images between PNG, JPEG, WebP, and BMP formats instantly in your browser. Adjust quality, preview results, download — no upload required.

Decode and inspect JWT tokens in your browser. View header, payload, claims, and expiry status instantly — no server required.

Generate dummy .xlsx files of exact file sizes for upload and storage testing — valid Excel format, no server required.

Generate dummy BMP/JPEG images of exact file sizes for upload and network testing — no server required.

Convert PDF to HTML in-browser. Extracts text and page visuals page by page — no upload, no server.

Convert Markdown to HTML in real-time. Supports GFM tables, code blocks, and task lists.

Format, validate, and beautify your JSON data instantly. Supports large files with auto-fix capabilities.

Base64 encoder and decoder. Convert plain text instantly in your browser.

Jasypt PBE encoder and decoder with custom algorithms and iterations.

Convert images to Base64 strings or preview images from Base64 data instantly.