Developer Tools
Free developer utilities for coding, formatting, and debugging.
13 tools available — all free, no signup required
Encode text into Base64 format or decode Base64 data back to clear readable text. Perform local client-side conversions instantly.
Convert color values between HEX, RGB, HSL, and CMYK formats. Adjust colors using an interactive color picker client-side.
Generate, validate, and understand crontab scheduling expressions. Build cron jobs visually with human-readable descriptions client-side.
Compute secure cryptographic hashes for your text strings. Generate SHA-1, SHA-256, SHA-384, and SHA-512 checksums instantly using native Web Crypto.
Encode special characters into HTML entities or decode entities back to standard text. Prevent HTML injection and display symbols correctly.
Format, beautify, minify, and validate JSON data instantly. Highlight parsing errors and copy the clean output with one click.
Minify and compress your JSON data client-side. Remove whitespaces, line breaks, and indentation to reduce file sizes.
Decode JSON Web Tokens (JWT) instantly. Inspect the header, payload data, and token metadata securely inside your browser.
Generate strong, secure, and customizable random passwords or passphrases client-side. Protect your accounts with high-entropy keys.
Convert pixels (PX) to relative REM or EM units and vice versa. Adjust body font sizes to match CSS responsive designs instantly.
Encode or decode text into URL-friendly format instantly. Support standard percent-encoding and full URI-safe encoding modes client-side.
Generate cryptographically secure v4 UUIDs (Universally Unique Identifiers) in bulk. Support custom capitalization and clipboard copies.
Format, beautify, and indent raw XML strings client-side. Make your XML structured and readable with custom spacing.
About Developer Tools
Browse our collection of 13 free developer toolson SainiSahab (sainisahab.com). All tools are completely free, require no signup or registration, and run entirely in your browser for maximum privacy and speed. Whether you're a student, professional, or everyday user, our developer tools are designed to give you instant, accurate results on any device.
