Free developer utilities for coding, formatting, and debugging.
19 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.
Minify and compress Cascading Style Sheets (CSS) code by stripping unnecessary whitespace, comments, and empty rules. Reduce file size and improve page speed.
Convert CSV (Comma Separated Values) text or files into structured JSON objects or arrays. Parse headers, auto-detect numbers, and download formatted JSON instantly.
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.
Minify and compress HTML code by stripping HTML comments, redundant whitespace, and blank lines. Reduce payload size and accelerate page rendering.
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.
Convert JSON arrays and objects into clean, downloadable CSV spreadsheet files. Auto-extracts column headers, handles nested values, and exports to Excel format.
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.
Generate QR codes instantly from URLs, text, emails, phone numbers, and more. Download or share your QR code in seconds — no signup required.
Format, beautify, and indent SQL queries instantly with custom uppercase keywords and indentation. Supports PostgreSQL, MySQL, SQLite, Oracle, and MS SQL.
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.
Browse our collection of 19 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.