Tools

Resize and compress large images for the web

Resize and compress large JPEG, PNG, WebP, or AVIF sources (up to 50 MB) in your browser — nothing is uploaded. Export WebP, PNG, or JPEG, plus AVIF when your browser can encode it. Same engine as the CLI and MCP.

Stamp text or a logo on images and PDFs

Add a text or logo watermark to PNG, JPEG, WebP, and PDF files in your browser. Set position, size, opacity, rotation, tiling, and PDF pages. Nothing is uploaded.

1200×630 social preview images

Generate Open Graph and Twitter Card preview images from gradient or split templates. Set title, subtitle, brand name, and optional logo — download PNG plus copy-ready meta tags via `image og`.

Complete favicon packages from one source

Generate favicon.ico, Apple Touch Icon, Android Chrome PNGs, and SVG from a single PNG, JPEG, WebP, or SVG source — same `image favicon` action on Web, CLI, and MCP. Download assets as a ZIP.

Format, validate, minify, and analyze JSON

Pretty-print, validate with line-level errors, minify, sort keys, and compute structural stats — all via the shared `json` registry on Web, CLI, and MCP.

Your JSON stays in your browser

Edit, pretty-print, minify, and validate JSON in the browser, and browse it as an expandable tree. Open a local file. Nothing is uploaded.

Convert HTML documents to Markdown

Convert headings, links, lists, code blocks, and tables from HTML into clean Markdown using `html markdown` — paste, upload, copy, or download on Web; file paths on CLI and MCP.

Safe SVG compression with accessibility preserved

Optimize SVG with SVGO while preserving viewBox and accessibility metadata — paste or upload on Web; file paths on CLI and MCP (`image svg-optimize`).

Capture PNG screenshots of any URL

Headless Playwright screenshots with configurable viewport, full-page capture, lite mode, and wait-until options — `web screenshot` on Web, CLI, and MCP. Production uses Sparticuz Chromium on Vercel.

Inspect and validate page metadata

Parse HTML or fetch a public URL for title, description, Open Graph, Twitter Cards, JSON-LD, robots, and canonical tags. Returns validation issues and suggested missing tags via `web inspect`.

URL-friendly slugs from any text

Convert titles and labels into clean URL slugs with accent stripping, Unicode normalization, and a configurable separator — `slugify run` on Web, CLI, and MCP.

Convert text between naming conventions

Convert identifiers between camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and Title Case via `string case` on Web, CLI, and MCP.

Environment diagnostics for deploys

Run server-side environment checks — Node.js version, Sharp availability, and related runtime diagnostics via `doctor check`. Useful on deployed instances to confirm image tools can run.

Base64, URL, HTML, and Unicode encoding

Encode and decode Base64, URL components, HTML entities, JSON string escapes, and Unicode escapes, and inspect UTF-8 bytes. Runs in your browser; text is not uploaded.