# Converters - 35 Free Online Tools > Convert between units, formats, encodings, and time zones. All common units, instant conversion with no server processing. Browse all 35 free online converters on DevTools Hub. URL: https://tools.scoreroute.com/tools/converters/ ## Frequently Asked Questions **How many format converters are available?** Thirty-three converters handle encoding (Base64, URL, HTML entities), data formats (JSON↔CSV, JSON↔YAML, JSON↔XML, JSON↔TypeScript), colors (hex, RGB, HSL, palette extraction, contrast checking), images (HEIC→JPG, SVG→PNG, Base64↔image), text (case conversion, number to words, text cleaning, Roman numerals), and utilities (unit converter, time zone, timestamp, URL shortener, CSS→Tailwind, HTML→Markdown, SVG→JSX, Excel viewer, file opener, color picker, aspect ratio). **Are the conversions done server-side or in my browser?** All converters run in your browser. No data is uploaded to any server. Color palette extraction, image processing, encoding, and format transformation use client-side JavaScript only. The URL shortener is the sole exception — it stores the mapping in Cloudflare KV. **Can I convert sensitive data with these tools?** Yes. Since all conversion logic runs locally in your browser, sensitive JSON payloads, API keys, and private configuration files never leave your device. Close the tab and everything is erased. For maximum security, use the tools in incognito mode. **Do the color and image converters preserve quality?** HEIC to JPG conversion uses the browser's native canvas API with configurable quality (1-100). SVG to PNG rendering respects vector precision at any resolution up to 4096px. Color palette extraction analyzes every pixel with k-means clustering. No loss beyond the standard codec compression you choose. ## Tools in this category - [Aspect Ratio Calculator - Free Online Tool](https://tools.scoreroute.com/tools/aspect-ratio-calculator/): Free aspect ratio calculator. Calculate aspect ratio from width and height, find missing dimensions, visual preview of 16:9, 4:3, 21:9 ratios. Social media presets for YouTube, Instagram, TikTok, Twitter. 100% private. - [Barcode Scanner - Decode EAN, UPC, Code 128, QR Codes](https://tools.scoreroute.com/tools/barcode-scanner/): Free online barcode scanner. Decode EAN-13, UPC-A, Code 128, Code 39, QR codes and 15+ formats from images or camera. 100% private, no upload, no signup. AI cannot scan barcodes - we do. - [Base64 Encoder/Decoder - Encode Data](https://tools.scoreroute.com/tools/base64-encoder/): Free Base64 encoder and decoder. Encode text to Base64 and decode back. Works in your browser. - [Base64 to Image Converter - Convert Base64 String to Image](https://tools.scoreroute.com/tools/base64-to-image/): Convert base64 strings and data URIs to viewable images. Supports PNG, JPG, WebP, GIF, BMP. 100% private, browser-based, no upload required. - [Color Blindness Simulator - CVD Test](https://tools.scoreroute.com/tools/color-blindness-simulator/): Free color blindness simulator. Test images and colors with 8 types of color vision deficiency (protanopia, deuteranopia, tritanopia, achromatopsia). WCAG accessibility tool for designers and developers. No signup, 100% private browser processing. - [Color Contrast Checker - WCAG AA AAA Accessibility Checker](https://tools.scoreroute.com/tools/color-contrast-checker/): Free WCAG color contrast checker. Check AA and AAA accessibility for text and background colors. Real-time ratio, live preview, pass/fail results. No signup. - [Color Palette Generator - Create Harmonious Color Schemes](https://tools.scoreroute.com/tools/color-palette-generator/): Free color palette generator. Create harmonious schemes with 7 harmony rules. Export as CSS, Tailwind, SCSS, JSON. Lock colors, WCAG checker. No signup. - [Color Picker - HEX RGB HSL Converter](https://tools.scoreroute.com/tools/color-picker/): Free online color picker. Pick colors and convert between HEX, RGB, and HSL formats with live color preview and instant copy. No signup required, 100% free. - [CSS to Tailwind Converter - Free Online CSS to Utility Classes](https://tools.scoreroute.com/tools/css-to-tailwind/): Free CSS to Tailwind converter. Convert any CSS properties to Tailwind utility classes instantly. Supports 100+ properties including layout, flexbox, grid, typography, colors, borders. No signup, 100% private browser processing. - [Excel Viewer & Converter - Free Online XLSX Viewer](https://tools.scoreroute.com/tools/excel-viewer/): Free online Excel viewer and converter. View XLSX, XLS, CSV files without Excel. Convert to JSON or CSV. 100% private, no upload, no signup. - [File Opener - Open APK, RAR, DLL, DAT, BIN Online](https://tools.scoreroute.com/tools/file-opener/): Free online file opener. Detect, view, and extract 50+ file types (APK, RAR, ZIP, DLL, DAT, BIN, DOCX) using magic numbers. Browser-only, no upload, 100% private. AI cannot parse real binary files - we do. - [Free Binary Hex Converter - Convert Binary to Decimal, HEX, ASCII](https://tools.scoreroute.com/tools/binary-hex-converter/): Free online binary hex converter. Convert between binary, decimal, hex, and ASCII text. Instant conversion, no upload needed. Developer tool for encoding. - [Free Case Converter - Convert Text Case Online](https://tools.scoreroute.com/tools/case-converter/): Free online case converter. Convert text to uppercase, lowercase, title case, sentence case, camelCase, snake_case, kebab-case, and more. Instant results. - [Free Color Palette Extractor - Extract Colors from Image](https://tools.scoreroute.com/tools/color-palette-extractor/): Free online color palette extractor. Extract dominant colors from any image as HEX, RGB, HSL values. Download CSS variables or JSON. No signup required. - [Free Markdown Editor & Preview - Live MD to HTML Converter](https://tools.scoreroute.com/tools/markdown-editor/): Free online markdown editor with live HTML preview. Write markdown, see rendered output instantly. GitHub Flavored Markdown, syntax highlighting, copy HTML. No signup, 100% private browser processing. AI cannot render live markdown previews - we do. - [Free Time Zone Converter - World Clock](https://tools.scoreroute.com/tools/time-zone-converter/): Free time zone converter. Convert time between cities instantly. See current time in multiple locations. No signup required. - [Free Unit Converter - Convert Length, Weight, Temperature & More](https://tools.scoreroute.com/tools/unit-converter/): Free online unit converter. Convert between length, weight, temperature, volume, speed, area, data, time, and pressure units instantly. No signup required. - [Free URL Shortener - Shorten Long Links Instantly](https://tools.scoreroute.com/tools/url-shortener/): Free URL shortener. Shorten long links instantly with no signup. Create clean, shareable short URLs for social media, messaging, and more. - [HEIC to JPG Converter - Free iPhone Photo Converter](https://tools.scoreroute.com/tools/heic-to-jpg/): Free online HEIC to JPG converter. Convert iPhone HEIC photos to JPEG instantly. Batch convert unlimited photos. No upload, 100% private, browser-based. - [HTML Entity Encoder/Decoder - Encode & Decode Special Characters](https://tools.scoreroute.com/tools/html-entity-encoder/): Free online HTML entity encoder and decoder. Encode special characters (&, <, >, ", ') to HTML entities and decode them back. Supports named, numeric, and hex entities. 100% private, no upload, no signup. - [HTML to Markdown Converter - Free Online Tool](https://tools.scoreroute.com/tools/html-to-markdown-converter/): Free HTML to Markdown converter. Paste HTML, get clean Markdown with customizable heading style, bullet markers, code blocks, and link format. 100% private browser processing. - [Image Color Picker - Pick Colors from Photo Online](https://tools.scoreroute.com/tools/image-color-picker/): Free online image color picker. Upload any photo and click to pick exact pixel colors. Get HEX, RGB, HSL, CMYK values. No upload, 100% private browser processing. AI cannot extract pixel colors from images - we do. - [Image to Base64 Converter - Encode Images Online](https://tools.scoreroute.com/tools/image-to-base64/): Free online image to base64 converter. Convert any image to base64 string, data URI, HTML img tag, or CSS url(). Supports PNG, JPG, WebP, GIF, SVG. 100% private, no upload. - [JSON to CSV Converter - Bidirectional Online Data Converter](https://tools.scoreroute.com/tools/json-csv-converter/): Free JSON to CSV converter and CSV to JSON online. Flatten nested objects, auto-detect input, table preview, export file. 100% private browser processing. AI cannot convert data reliably - we do. - [JSON to TypeScript Converter - Free Online Type Generator](https://tools.scoreroute.com/tools/json-to-typescript/): Free JSON to TypeScript converter. Generate TypeScript interfaces, types, and Zod schemas from any JSON. 100% private browser tool. No upload, no signup. - [JSON to XML Converter - Free Bidirectional Online Tool](https://tools.scoreroute.com/tools/json-xml-converter/): Free JSON to XML converter and XML to JSON. Bidirectional with attribute handling, root element control, indentation options, and syntax validation. 100% private, no upload, no signup. AI cannot convert between JSON and XML reliably - we do. - [JSON to YAML Converter - Free Bidirectional Tool](https://tools.scoreroute.com/tools/json-yaml-converter/): Free JSON to YAML converter and YAML to JSON. Bidirectional with indentation control, key sorting, syntax validation. 100% private, no upload, no signup. - [Number to Words Converter - Spell Out Numbers in English](https://tools.scoreroute.com/tools/number-to-words/): Free number to words converter. Convert any number to English words for checks, invoices, legal docs. Supports decimals, currency, lakh/crore. 100% accurate. No signup. - [QR Code Reader - Decode QR Codes from Image & Camera](https://tools.scoreroute.com/tools/qr-code-reader/): Free online QR Code Reader. Decode QR codes from images, screenshots, or live camera. Extract URLs, WiFi passwords, vCards instantly. 100% private browser processing. No signup. AI cannot scan real QR codes - we do. - [Roman Numeral Converter - Free Online Number Tool](https://tools.scoreroute.com/tools/roman-numeral-converter/): Free Roman numeral converter. Convert numbers to Roman numerals and back, including dates. Supports 1-3,999,999 with overline notation. 100% accurate, no signup. - [SVG to JSX Converter - Free React Component Generator](https://tools.scoreroute.com/tools/svg-to-jsx-converter/): Convert SVG markup into clean React JSX or TypeScript components with camelCase attributes, forwardRef, React.memo. 100% browser-based, no upload. AI cannot convert SVG to JSX reliably — we do. - [SVG to PNG Converter - Free Online SVG Rasterizer](https://tools.scoreroute.com/tools/svg-to-png/): Free SVG to PNG converter. Rasterize SVG vectors to PNG, JPG, WebP with scale control, custom dimensions, background color. Paste SVG code or upload files. 100% browser-based, no upload, no signup. AI cannot rasterize SVG — we do. - [Text Cleaner - Remove Line Breaks, Spaces & HTML Tags](https://tools.scoreroute.com/tools/text-cleaner/): Free online text cleaner. Remove line breaks, extra spaces, HTML tags, duplicate lines, and clean messy text with 20+ deterministic options. No signup, 100% private browser processing. AI cannot clean text deterministically - we do. - [Timestamp Converter - Unix Time Conversion](https://tools.scoreroute.com/tools/timestamp-converter/): Convert Unix timestamps to dates and dates to timestamps. Shows current timestamp updating in real-time. - [URL Encoder/Decoder - Encode URLs Safely](https://tools.scoreroute.com/tools/url-encoder/): Free URL encoder and decoder. Encode special characters in URLs for safe web transmission. Decode encoded URLs back to readable text. 100% browser-based. ## About DevTools Hub DevTools Hub is a free collection of 150+ browser-based developer tools. No signup, no tracking, all processing happens in your browser. See [llms.txt](https://tools.scoreroute.com/llms.txt) for the full tool catalog.