OnlineUtils
JSON Viewer
Free online JSON viewer with interactive tree view and syntax highlighting. Format, validate, beautify, and inspect JSON data instantly. Supports nested string parsing, key sorting, and one-click formatting. No data leaves your browser.
SVG Optimize
Free online SVG optimizer powered by SVGO. Drag and drop to compress SVG files, remove metadata, minify paths, and reduce file size by up to 80%. Live preview, download as SVG or PNG. All processing happens in your browser.
Markdown
Free online Markdown editor with instant live preview. Write GitHub-flavored Markdown with syntax highlighting, HTML support, typographic enhancements, and one-click formatting via Prettier. Renders in real-time as you type.
Encode/Decode
Free online encoder and decoder tool. Instantly convert between Base64, URL encoding, HTML entities, Unicode escape sequences, Hexadecimal, and decode JWT tokens. Add multiple conversion groups for side-by-side comparison.
Diff
Free online diff tool to compare two text blocks or JSON objects side by side. Highlights added, removed, and modified lines with word-level and character-level granularity. Supports JSON parsing, key sorting, and collapsible unchanged context.
Share
Share text instantly across devices with a short link and QR code. Paste your text, get a shareable URL for quick access on any phone, tablet, or computer. No sign-up, no app install required. Supports updates.
QR Code
Free online QR code generator. Create QR codes for URLs, text, and WiFi credentials with custom colors, dot styles, and logo overlay. Download as PNG, SVG, JPEG, or WebP. All generated locally in your browser, no data uploaded.