Image Compressor
Reduce image file size for WebP, JPEG and PNG directly in your browser. Quality mode or target size.
JSON ↔ CSV
Convert JSON to CSV or CSV to JSON. Custom delimiter, table preview, direct download.
YAML ↔ JSON
Convert YAML to JSON or JSON to YAML. Sort keys, file import, copy and download. 100% local.
Markdown → HTML
Convert Markdown to HTML with live preview. GFM tables, task lists, code blocks. Copy or download the result.
Image → ASCII Art
Convert images to colored or monochrome ASCII art. Character sets, contrast, PNG export. 100% local.
UUID v4 / v7 Generator
Generate UUID v4 (random) and v7 (timestamp-sorted) identifiers for databases and APIs. Bulk, formats, JSON/CSV export.
Base64 Encoder / Decoder
Encode and decode text, files, and images to Base64. URL-safe, MIME, PEM, Data URI. 100% local.
JWT Decoder
Decode, verify, and build JWT tokens. HS256/RS256/ES256 signature verification, colored claims, time travel. 100% local.
Regex Tester & Visualizer
Test regex with live highlighting, named groups, lookaheads, replace mode, split mode, token explainer. 100% local.
Color Palette Extractor
Extract dominant colors from any image. Hex, RGB, HSL, CSS variables, SCSS, JSON, SVG, PNG export. K-means clustering. 100% local.
Image Color Replacer
Replace a specific color in any image. Built-in eyedropper, tolerance, edge smoothing, multi-rules, luminance preservation. 100% local, no upload.