Free Online Tools
A collection of fast, free, and private tools that run entirely in your browser. No sign-up, no data collection, no limits.
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Popular Tools
Word Counter
Count words, characters, sentences, and paragraphs in your text. Get reading time estimates instantly.
JSON Formatter
Format, minify, and validate JSON data with syntax highlighting. Beautify messy JSON instantly.
Password Generator
Generate strong, random passwords with customizable length, character types, and strength indicators.
Color Converter
Convert colors between HEX, RGB, and HSL formats. Live preview and bidirectional sync.
All Tools
Word Counter
Count words, characters, sentences, and paragraphs in your text. Get reading time estimates instantly.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and more.
Markdown Preview
Write Markdown and see the rendered HTML preview in real time. Supports headings, bold, italic, code, links, lists, and more.
JSON Formatter
Format, minify, and validate JSON data with syntax highlighting. Beautify messy JSON instantly.
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 strings back to plain text. Supports UTF-8 encoding.
Hash Generator
Generate SHA-1, SHA-256, and SHA-512 hashes from text using the Web Crypto API. Secure and private.
URL Encoder / Decoder
Encode or decode URL components using percent-encoding. Essential for working with query strings, API parameters, and special characters in URLs.
Regex Tester
Test and debug regular expressions with real-time match highlighting, capture groups, and match details.
Password Generator
Generate strong, random passwords with customizable length, character types, and strength indicators.
QR Code Generator
Generate QR codes from text, URLs, or any data. Download as PNG for print or digital use.
UUID Generator
Generate random UUID v4 identifiers for databases, APIs, and distributed systems.
Color Converter
Convert colors between HEX, RGB, and HSL formats. Live preview and bidirectional sync.
Unit Converter
Convert between units of length, weight, temperature, area, volume, speed, and data storage.
Image Compressor
Compress images in your browser with adjustable quality. Supports JPEG, PNG, and WebP output formats.
Image Resizer
Resize images to exact pixel dimensions with aspect ratio lock and common presets. All processing happens locally in your browser.
Image Cropper
Crop images with free-form selection or preset aspect ratios like 1:1, 4:3, and 16:9. All processing happens in your browser.
Image to Base64
Convert images to Base64 encoded strings and data URIs for embedding directly in HTML, CSS, or JavaScript code.
HEIC Converter
Convert HEIC and HEIF photos from iPhones to JPEG, PNG, or WebP format. All processing happens in your browser — photos are never uploaded.
Passport Photo Maker
Create passport, visa, and USCIS photos to exact specifications. Supports US, UK, EU, Canada, India, China, and Australia formats with printable sheets.
Background Remover
Remove image backgrounds instantly using AI. Replace with white, transparent, or any custom color. Perfect for passport photos, product images, and profile pictures.
Photo Compliance Checker
Check if your photo meets passport, visa, or USCIS requirements. Validates dimensions, file size, background color, exposure, and sharpness.
PDF Merge
Combine multiple PDF files into a single document. Drag to reorder pages before merging. All processing happens in your browser — files are never uploaded.
PDF Split
Split a PDF into multiple files by page ranges or extract individual pages. All processing happens in your browser — files are never uploaded.
PDF to Image
Convert PDF pages to PNG, JPEG, or WebP images at custom resolution. All processing happens in your browser — files are never uploaded.
Image to PDF
Convert images (JPEG, PNG, WebP) into a PDF document. Arrange multiple images as pages. All processing happens in your browser.
PDF Page Organizer
Reorder or remove pages from a PDF document. All processing happens in your browser — files are never uploaded.
PDF Compress
Reduce PDF file size by re-rendering pages at adjustable quality. All processing happens in your browser — files are never uploaded.
PDF Rotate
Rotate PDF pages by 90, 180, or 270 degrees. Rotate all pages at once or individually. All processing happens in your browser.
PDF Watermark
Add a text watermark to every page of a PDF. Customize font size, opacity, and angle. All processing happens in your browser.
About ToolRun
ToolRun is a collection of free online tools built for speed, privacy, and ease of use. Every tool runs entirely in your browser using JavaScript. Your data is never uploaded to any server, ensuring complete privacy and instant results with zero latency.
Whether you are a developer formatting JSON, a writer counting words, a designer converting colors, or anyone who needs a quick online utility, ToolRun has you covered. All tools are free to use with no registration, no ads blocking your workflow, and no usage limits.
Why Choose ToolRun?
- 100% Private: All processing happens in your browser. Nothing is ever sent to a server.
- Instant Results: No loading, no waiting. Tools work in real time as you type.
- No Registration: Use any tool immediately without creating an account.
- Mobile Friendly: Every tool is fully responsive and works on any device.
- Open Categories: From text manipulation to developer utilities, image tools to generators, we cover the tools you need most.