OpenHub Tools
Free tools for your business. Runs locally in your browser — no data leaves your device.
PDF Tools
Merge, split, rotate, watermark, and compress PDF files. Everything runs locally in your browser — no files are uploaded.
- Merge PDFs
- Split PDF
- Rotate Pages
- Watermark
- Compress
Password Generator
Generate secure passwords and passphrases. Cryptographically random.
- Custom Length
- Strength Meter
- Passphrases
- Bulk Generate
CSS Stylings
Glass, box shadows, gradients, border radius, text styles, and CSS filters. All in one tool with live preview.
- Glass
- Box Shadows
- Gradients
- Border Radius
- Text Styles
CSV/Excel Viewer
Open and view CSV and Excel files. Sort, filter, and search your data.
- Open CSV/XLSX
- Sort columns
- Filter rows
- Export CSV
Image Tools
Resize, crop, compress, and convert images. Supports PNG, JPG, and WebP.
- Resize
- Crop
- Compress
- Convert PNG/JPG/WebP
JSON Formatter
Format, validate, and visualize JSON data. Prettify, minify, and explore with tree view.
- Prettify
- Minify
- Validate
- Tree View
Markdown Editor
Write markdown with live preview. Export as HTML.
- Live Preview
- Toolbar
- Export HTML
- Copy HTML
Base64 Encoder/Decoder
Encode and decode text and files to Base64.
- Encode Text
- Decode Text
- Encode Files
- Decode to File
QR Code Generator
Generate QR codes for URLs, text, email, phone, and WiFi.
- URL/Text/Email/WiFi
- Custom Colors
- Download PNG
- Download SVG
Color Picker & Converter
Pick colors and convert between HEX, RGB, and HSL. WCAG contrast checker.
- HEX/RGB/HSL
- Visual Picker
- Contrast Checker
- Copy Formats
Text Diff
Compare two texts side by side. See additions, deletions, and changes.
- Line Diff
- Character Diff
- Highlighting
- Stats
Word Counter
Count words, characters, sentences, and paragraphs. Reading time estimate.
- Words
- Characters
- Sentences
- Reading Time
Regex Tester
Test regular expressions with live highlighting and match details.
- Live Matching
- Groups
- Replace Mode
- Common Patterns