Image → PDF
Combine images into a PDF (keeps aspect ratio)
Select multiple images (JPEG, PNG). Each image will be placed on its own page, scaled to fit, and centered. Choose the page orientation below.
Image Resizer / Cropper
Crop and resize images
Upload an image, crop it interactively, then download the result at your chosen dimensions.
Base64 Encoder & Decoder
Encode text to Base64, or decode Base64 to text
Paste your text below. For files (like images), use the file input.
Markdown → HTML
Live Markdown preview
Write Markdown on the left; see the rendered HTML on the right.
QR Code Generator
Create a QR code from text or URL
Enter any text, URL, or data and get a downloadable QR code.
UUID / Random String Generator
Generate unique identifiers and secure random strings
Click a button to copy a UUID (v4) or a custom‑length random string.
Color Converter
HEX ↔ RGB ↔ HSL
Enter a color in any format; the others are computed instantly.
JSON Formatter / Validator
Pretty‑print or validate JSON
Paste messy JSON; it will be formatted or an error will be shown.
Text Diff
Highlight differences between two texts
Paste the original and the modified text.
CSV ↔ JSON
Convert between CSV and JSON
Paste CSV or JSON and click the corresponding button.
SVG to PNG / Image Format
Convert between image formats
Upload an SVG, WebP, JPEG, or PNG and download as PNG (or other formats).
HTML Entity Encoder / Decoder
Escape or unescape HTML special characters
Paste text with <, >, &, etc. and convert safely.
Regex Tester
Test regular expressions interactively
Enter a pattern and a test string; matches are highlighted.
Unit Converter
Convert between units (length, mass, temperature, etc.)
Enter a value, choose from and to units.
Password Strength Checker
Estimate password strength (zxcvbn)
Type a password to see its estimated crack time and score.
Hash Generator
Generate MD5, SHA-256, SHA-512 hashes
Enter text or upload a file to compute its hash.
Audio / Video Trimmer (ffmpeg.wasm)
Trim media files in‑browser
Select an audio or video file, enter start/end times (seconds), and download the trimmed clip.