🔁 Convert & encode

Modern network protocols, configuration files, and web APIs frequently use Base64 to represent binary content and complex strings within text-only formats. You often encounter Base64 strings when inspecting basic authentication headers, API keys, webhook payloads, or embedded data strings. Converting these representations manually is impossible, and opening a terminal command line can disrupt your workflow. This utility provides a dedicated text-to-Base64 encoder and Base64-to-text decoder directly in your browser. You can switch between Encode Mode and Decode Mode, process your text with a single click, and copy the converted output or save it using the download option. Because all processing runs entirely in your browser, your text input is not sent to a server.

File sizes, disk quotas, and memory specs are quoted in a mix of B, KB, MB, GB, TB, and PB, and converting between them by powers of 1,024 is nobody's idea of fun. Byte Converter takes one value in any of those six units and shows its equivalent in all six at once — enter 1.5 GB and you immediately see the KB, MB, TB figures beside it. The math uses the binary convention (1 KB = 1,024 bytes) that operating systems and developers use, with results shown to up to four decimals. One input, one Convert click, six answers, all computed locally in your browser.

Embedding raw user input or code snippets directly into web templates poses serious risks, ranging from broken page layouts to cross-site scripting vulnerabilities. If reserved characters like angle brackets, ampersands, or quotes are rendered without escaping, the browser interprets them as HTML tags or attribute delimiters rather than literal text. Conversely, developers frequently need to reverse escaped HTML entities found in databases or API payloads back into raw source code. This HTML escape and unescape utility solves both challenges by swapping reserved symbols with standardized entity references, or reversing them with equal precision. Because all processing executes locally in your browser, your proprietary markup, template snippets, and documentation drafts remain completely private. Whether you are preparing code examples for a technical blog or sanitizing UI text, this tool makes entity handling effortless.

Technical writers, content creators, and developers frequently migrate documentation between rich web markup and lightweight markup languages. Converting blog posts, documentation pages, or CMS rich text into clean Markdown files by hand is tedious and error-prone, requiring endless adjustments to headings, lists, links, and bold text. Converting Markdown back into HTML snippets for email templates or custom website components presents the same repetitive challenge. HTML to Markdown provides bidirectional translation between standard HTML tags and Markdown syntax with a simple dropdown selection. HTML to Markdown runs locally in your browser using client-side JavaScript.

Converting multiline lists into single-line strings is a common data reformatting challenge across database querying, programming, spreadsheet preparation, and content formatting. Transforming columnar lists into comma-separated values or custom-delimited parameters by hand is time-consuming and prone to stray delimiters. Join Lines runs locally in your browser using client-side JavaScript. By filtering empty lines and merging text with any chosen separator—such as commas, semicolons, pipes, or spaces—this tool collapses lists into clean strings with a single click, simplifying data preparation for developers and analysts.

Markdown is the primary formatting syntax used by software developers, technical writers, and content creators to craft README files, documentation pages, issue tickets, and release notes. While Markdown source text is designed to remain readable in plain text, complex structural elements like multi-column tables, nested bullet lists, and fenced code blocks can easily suffer from formatting errors that are difficult to notice before publishing. This Markdown preview tool eliminates formatting guesswork by rendering your markup in real time as you write. A responsive side-by-side view lets you verify formatting, test link placement, and polish structure before sharing your work. Because parsing runs entirely in your browser using client-side JavaScript, your draft content is not sent to a server.

Computer science students, embedded systems programmers, and network engineers frequently convert numeric values between decimal notation and positional numbering systems like binary, octal, and hexadecimal. Performing radix conversions by hand using repeated division or powers of two is tedious and prone to calculation mistakes, especially when troubleshooting memory offsets, bitmasks, or hardware register configurations. Number Base Converter streamlines this process by accepting an input integer in binary, octal, decimal, or hexadecimal and converting it simultaneously across all four standard computing bases. Number Base Converter runs locally in your browser using client-side JavaScript.

Pasting content from PDF files, web pages, or code editors frequently introduces awkward spacing issues, including clustered tabs, irregular margins, and runaway blank lines. The Remove Whitespace tool provides three distinct cleaning routines to normalize messy text: Collapse multiple spaces, Trim each line, and Remove all whitespace. Whether you need to compress multiple spaces into single dividers, clean up line boundaries while preserving vertical structure, or strip every whitespace character for compact strings, clicking Clean applies your chosen rule. Output appears in a read-only textarea equipped with a 📋 Copy button. Everything runs locally in your browser using client-side JavaScript.

Reversing text sequences is a handy operation in coding, linguistic analysis, puzzle design, and creative formatting. Depending on your objective, you may need to mirror every individual character backward, flip the word order of a sentence, or invert the vertical sequence of a multiline document. Reverse Text runs locally in your browser using client-side JavaScript. Featuring three distinct transformation modes—reverse characters, reverse words, and reverse lines—this tool provides a fast, flexible, and confidential way to invert text structures right in your browser.

Creating clean, readable URL slugs is a critical requirement for search engine optimization, content management systems, and web architecture. Messy titles with special characters, accented diacritics, and irregular whitespace create confusing URLs that hinder user experience and search ranking. Slug Generator runs locally in your browser using client-side JavaScript. By stripping accent marks, removing illegal punctuation, normalizing whitespace into clean hyphens, and offering an optional case-sensitive toggle, this tool converts article titles and product names into clean slugs in real time with convenient copy and file download options.

Transforming delimited data strings—such as comma-separated values, semicolon-delimited lists, pipe-separated logs, or space-separated tags—into vertical column lists is a routine task in data analysis, spreadsheet imports, and code refactoring. Manually replacing delimiters across hundreds of tokens is tedious and easily corrupted. Split Text by Delimiter runs locally in your browser using client-side JavaScript. Offering dedicated delimiter presets for commas, semicolons, pipes, spaces, and newlines, along with an optional empty-line removal toggle, this tool breaks horizontal strings into clean, vertical lines with a single click.

Find and Replace Text does exactly what its name promises: paste text, type what to find and what to replace it with, and click Replace All. Two checkboxes refine the match — Case sensitive for exact-capitalization matching, and Whole word so that "cat" does not match inside "concatenate". The tool counts every substitution and reports it, for example "✅ Replaced 14 occurrence(s)". When you are done, copy the result with the 📋 Copy button or save it as a file with the ⬇ Download link (replaced.txt). Matching is literal text, not regular expressions — special characters are treated as plain characters. Everything runs locally in your browser.

Listening to text read aloud helps with proofreading, accessibility, language learning, or simply resting your eyes. Text to Speech turns anything you type or paste into spoken audio using your browser's built-in speech synthesis (the Web Speech API) — no downloads, accounts, or audio files involved. Two sliders let you tune the Rate (0.5×–2× speed) and Pitch to your liking, and ▶ Speak / ■ Stop buttons control playback. Available voices depend on your browser and operating system, since the speech engine comes from your device, not from a cloud service.

Web browsers and server APIs rely on specific character sets to interpret Uniform Resource Identifiers correctly. When query strings contain spaces, ampersands, slashes, quotation marks, or non-ASCII characters, web servers can misinterpret parameter boundaries, causing broken redirects, corrupted payloads, or failed authentication attempts. This URL encoder resolves these formatting conflicts by converting reserved, unsafe, and multibyte characters into valid percent-encoded representations according to RFC standards. Processing runs locally in your browser using client-side JavaScript. Whether you are debugging REST API queries, constructing webhook parameters, or preparing landing page links with UTM parameters, this utility delivers predictable encoding without network latency or third-party logging.

Analyzing complex Uniform Resource Locators (URLs)—especially links containing nested query parameters, port designations, path segments, and anchor fragments—is a routine debugging task for web developers, API engineers, and SEO specialists. Manually breaking down long URLs is tedious, and pasting internal staging or tokenized URLs into cloud-based parsing services risks leaking session parameters or API keys to third-party server logs. This URL Parser deconstructs web addresses directly in your browser using the native WHATWG URL API. It breaks URLs into structured components locally, helping you inspect query parameters and routing paths safely.

Cleaning up redundant records, repetitive log entries, and duplicate contact lists is an essential data cleaning task for developers and analysts. Manually reviewing thousands of rows to spot duplicate entries wastes valuable hours and introduces mistakes. Remove Duplicate Lines runs locally in your browser using client-side JavaScript. Featuring multiple deduplication modes, whitespace trimming, optional alphabetical sorting, and newline preservation, this tool strips duplicate lines while displaying the exact count of removed rows, complete with convenient clipboard copying and text file export capabilities.