Free Online Tools.
PDFs, Images, Code & More.
30 free browser tools for images, PDFs, code, text, developer tasks and calculations. Process your files locally, with no account required.
Image Tools
Compress, convert, crop, extract palettes, and encode images locally.
Image Compressor
Compress JPEG, PNG, and WebP images with custom quality slider and side-by-side preview.
Image Format Converter
Convert images between PNG, JPG, WEBP, BMP, and SVG formats with transparency support.
Image Cropper & Resizer
Crop images with aspect ratio presets (1:1, 16:9, 4:3), rotate, flip, and resize cleanly.
Image Palette & Eyedropper
Extract dominant color palettes and pick exact HEX/RGB color values directly from photos.
Base64 to Image Converter
Convert images to Base64 data URLs for CSS/HTML or preview and download Base64 strings.
PDF Tools
Merge, split, render to images, create from pictures, and rotate PDF pages securely.
PDF Merge
Combine multiple PDF files into a single organized document with custom page reordering.
PDF Split & Page Extractor
Extract specific page ranges (e.g. 1-3, 5, 8) into a new PDF document or individual files.
PDF to Images
Render PDF pages into high-resolution PNG or JPEG images with selectable scale and quality.
Images to PDF
Convert multiple photos (JPG, PNG, WebP) into an organized PDF document with page layout options.
PDF Page Rotator
Rotate inverted or sideways PDF pages by 90°, 180°, or 270° and save the corrected file.
Code & Web Tools
Format JSON, minify code, inspect diffs, test regex expressions, and beautify SQL.
JSON Formatter & Validator
Beautify, validate, fix, and minify JSON with real-time error position detection.
Code Minifier & Reindenter
Minify web assets and reindent Swift, Dart, Java, Kotlin, PHP and more with language samples.
Code & Text Diff Viewer
Compare two code or text inputs and inspect line-by-line additions, deletions and unchanged content.
Regex Tester
Test regular expressions in real-time with visual group highlights and preset common patterns.
SQL Formatter & Beautifier
Format messy SQL queries into clean, standard, uppercase-keyword statements with indentation.
Text Utilities
Count words, transform letter cases, edit live markdown, generate dummy text, and sort lines.
Word & Character Counter
Count words, characters, sentences, paragraphs, reading time, and keyword frequency.
Case Converter & Slug Generator
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and URL slugs.
Markdown Live Editor
Write Markdown with instant HTML live preview, formatted export, and syntax cheatsheet.
Lorem Ipsum Generator
Generate customized placeholder dummy text by paragraphs, sentences, or words with HTML tags.
Line Sorter & Deduplicator
Sort lines alphabetically, numerically, remove duplicates, trim whitespace, and prefix items.
Developer Utilities
Encode/decode Base64 and URLs, generate hashes, create UUIDs, convert timestamps, and inspect JWTs.
Base64, URL & Hex Converter
Encode and decode Base64, URL percent-encoding, HTML entities, Hex, and binary strings.
Hash & Checksum Generator
Compute MD5, SHA-1, SHA-256, and SHA-512 hashes for text and files securely in-browser.
UUID & Token Generator
Generate cryptographically secure UUID v4 identifiers, API keys, and custom random passwords.
Unix Timestamp Converter
Convert Unix epoch timestamps to UTC and local human dates, and parse date strings to timestamps.
JWT Decoder & Inspector
Decode and inspect JSON Web Tokens locally. View header claims, payload, and expiry dates.
Calculators
Percentages, loan amortizations, universal unit conversions, date differences, and aspect ratios.
Percentage Calculator
Calculate percentage changes, markups, discounts, percentage of values, and differences.
Loan & Mortgage Calculator
Calculate monthly payments, total interest, and full monthly amortization schedule tables.
Universal Unit Converter
Convert between Length, Weight, Temperature, Digital Data, Area, and Speed units seamlessly.
Date & Age Calculator
Calculate precise age, duration between two dates, add/subtract days, or set a countdown timer.
Aspect Ratio & Screen PPI
Calculate unknown dimensions, aspect ratios (16:9, 4:3, 21:9), and screen pixel density (PPI).
Why ToolsHub?
Practical utilities with local processing and clear input and output controls.
Local File Processing
Your tool inputs are processed in your browser. Files are not uploaded for conversion; see our privacy policy for hosting and external-resource details.
Zero Upload Delays
Processing starts without uploading files to a conversion server. Speed and supported file sizes depend on your device, browser and input.
Offline Capable
Many loaded tools can continue offline. Opening another page or loading an external PDF dependency may still require a connection.
Modern & Accessible
Designed with Dark/Light theme switching, keyboard shortcuts, screen-reader support, and clean mobile responsiveness.