PX / Rem Calculator (web-toolbox.dev)
Free tool for converting between PX and rem. Enter the base font size to quickly convert units during CSS layout design, also useful for planning accessible font sizes.
QR Code Generator (web-toolbox.dev)
Free tool for generating QR codes from any text or URL. Customize size and error correction level, then download the generated QR code image.
QR Code Reader (web-toolbox.dev)
Free tool for reading QR codes by uploading an image file or using a camera. Results are displayed instantly in the browser with no installation required.
Subdomain Lookup (web-toolbox.dev)
Free tool for researching subdomains of a specified domain. Enumerates subdomains from DNS databases and public sources, useful for security research and understanding site structure.
Text Case Converter (web-toolbox.dev)
Free tool for converting text to camelCase, snake_case, PascalCase, kebab-case, and more. Useful for naming convention conversion in programming and data processing.
Text Duplicate Remover (web-toolbox.dev)
Free tool for detecting and removing duplicate lines from text. Useful for removing duplicates from lists or cleaning up log files.
Text Line Joiner (web-toolbox.dev)
Free tool for joining multiple lines of text into one with a specified delimiter. Useful for creating comma-separated lists or SQL IN clauses from multi-line input.
Text Prefix / Suffix (web-toolbox.dev)
Free tool for bulk-adding specified strings to the beginning or end of each line of text. Streamlines text editing tasks such as adding quote marks or inserting comment symbols.
Text Sorter (web-toolbox.dev)
Free tool for sorting lines of text in ascending, descending, or random order. Quickly sort name lists, number lists, and more.
URL Bulk Opener (web-toolbox.dev)
Free tool for opening multiple URLs at once. Just paste URLs one per line and click the button to open all of them in new tabs simultaneously.
WebP Converter (web-toolbox.dev)
Free tool for converting image files to WebP format in the browser. Supports conversion from PNG, JPG, and other formats with quality adjustment to generate lightweight images.
Word Counter (web-toolbox.dev)
Free tool for real-time counting of words, characters, sentences, and more in English text. Useful for checking character limits in English writing and SEO content.
