Online tools, open and use.
Online tools that run directly in your browser. No software to install, no files to upload — just open and use.
Why use it
Focused on solving frequent, small-scale problems with minimal steps and no over-engineering.
Available tools
Tools currently available for direct use.
Image Format & Size Converter — HEIC Supported
Convert HEIC and other photos to JPG/PNG/WebP, resize dimensions and tune quality entirely in the browser.
Image Cropper (Free-Form Selection)
Crop images with a drag-to-select box right in your browser, with common aspect ratio presets and PNG/JPG/WebP export.
Online PDF Text Editor
Replace text inside a PDF in the browser while keeping the original font look as much as possible.
PDF Password Remover Online
Remove PDF passwords locally in your browser and get a new file with identical content.
JSON Formatter & Tree Viewer
Format JSON into a collapsible tree locally in your browser, with search and nested-JSON expansion.
OG Image Validator — Social Share Preview Debugger
Fetch a URL's Open Graph / Twitter tags, preview multi-platform share cards and validate the image.
Markdown to PDF
Render Markdown in the browser and export it as a mobile-friendly PDF via browser print.
Sitemap Validator
Fetch sitemap.xml and validate its structure, entry fields and size limits against the protocol.
Webpage to Markdown
Convert pasted webpage content or raw HTML source into Markdown, locally in your browser.
Chinese Converter Online
Convert Simplified and Traditional Chinese locally in your browser, with Standard, Taiwan, and Hong Kong/Macau regional wording.