Convert Any File, Instantly

Image Format Converter — Convert between JPG, PNG, WebP, GIF, and BMP formats. Simply drag and drop your image, select the target format, and download instantly. Perfect for converting screenshots (PNG) to compressed JPG for email, or creating WebP files for faster website loading.

Image Resizer — Resize any image to custom dimensions or use presets like 1920×1080, 1280×720, 800×600, 400×400, or 150×150. Great for social media profile photos, thumbnails, or fitting images to specific size requirements.

Image Compressor — Reduce image file sizes with adjustable quality (1-100%). Supports JPEG, WebP, and PNG output. See a live before/after comparison showing exactly how much space you saved — often 60-80% reduction with minimal quality loss.

Markdown to HTML Converter — Write or paste Markdown and get instant HTML output. Supports headings, bold, italic, code blocks, lists, blockquotes, and links. Toggle between HTML source view and rendered preview. Download the result as an .html file.

HTML to Plain Text — Strip all HTML tags from any markup and extract clean, readable plain text. Paste messy HTML from emails or web pages and get clean text output you can use anywhere.

CSV ↔ JSON Converter — Convert CSV spreadsheet data to structured JSON arrays, or convert JSON back to CSV format. Handles headers automatically. Essential for developers working with APIs, databases, or data migration.

JSON Formatter & Validator — Pretty-print, minify, or validate JSON data. Instantly tells you if your JSON is valid or shows exactly where the syntax error is. Formats with proper indentation for readability or compresses to a single line for production.

Base64 Encode/Decode — Encode any text or file to Base64, or decode Base64 strings back to readable text. Supports both text input and file drag-and-drop. Essential for embedding images in CSS, working with APIs, or handling email attachments.

URL Encode/Decode — Encode special characters in URLs to percent-encoded format, or decode encoded URLs back to readable text. Critical for web development, API work, and debugging query strings.

HTML Entity Encode/Decode — Convert special characters like <, >, &, and quotes to their HTML entity equivalents, or decode entities back. Prevents XSS vulnerabilities and ensures HTML renders correctly.

JWT Decoder — Paste any JSON Web Token to instantly decode its header, payload, and check expiration status. See the algorithm, claims, issuer, and whether the token is still valid — all without sending it to any server.

Word & Character Counter — Count words, characters, sentences, and estimated reading time as you type. Writers, students, and content creators use this to meet word count requirements for essays, articles, and social media posts.

Case Converter — Transform text between UPPERCASE, lowercase, Title Case, camelCase, and snake_case. One click to convert — perfect for formatting code variable names, headlines, or standardizing text.

Lorem Ipsum Generator — Generate placeholder text for design mockups and wireframes. Choose 1-50 paragraphs of properly randomized Latin text. Copy to clipboard with one click.

Text Diff Checker — Compare two texts side by side and see exactly which lines differ. Additions highlighted in green, removals in red. Perfect for comparing code versions, document revisions, or configuration changes.

Color Converter — Convert colors between HEX, RGB, and HSL formats with a live color preview. Type in any format and all others update in real time. Essential for designers and front-end developers working across different CSS color specifications.

Color Palette from Image — Upload any image to automatically extract its dominant color palette. Returns up to 12 colors with HEX codes you can copy with one click. Great for creating brand palettes inspired by photography or artwork.

WCAG Contrast Checker — Check if your foreground and background color combination meets WCAG accessibility standards. Tests against AA Normal (4.5:1), AA Large (3:1), and AAA Normal (7:1) ratios with live preview.

QR Code Generator — Generate QR codes for URLs, plain text, WiFi network credentials, email addresses, and phone numbers. Customize size, foreground color, and background color. Download as PNG or SVG. Works completely offline.

Is ConvertFree really free?

Yes, 100% free. All 19 tools work without any payment, sign-up, or usage limits. We're supported by ads, so the tools stay free for everyone.

Are my files safe and private?

Absolutely. All conversions happen directly in your web browser using JavaScript. Your files are never uploaded to any server. Once you close the tab, your data is gone. We can't see, store, or access your files — ever.

What file formats are supported?

Images: JPG, PNG, WebP, GIF, BMP. Documents: Markdown, HTML, CSV, JSON. Developer formats: Base64, URL encoding, HTML entities, JWT tokens. Plus text tools and color converters.

Is there a file size limit?

Since everything processes in your browser, limits depend on your device's memory. Most files up to 100MB convert without issues. Very large files may be slow on older devices.

Do I need to install anything?

No. ConvertFree works entirely in your web browser — Chrome, Firefox, Safari, Edge, or any modern browser. No downloads, extensions, or plugins needed. It even works on mobile.

How is this different from other online converters?

Most online converters upload your files to their servers — meaning your data passes through unknown third parties. ConvertFree processes everything locally in your browser. It's faster (no upload/download wait), more private (your files stay on your device), and works offline once the page loads.