Everything in the catalog

Upload a screenshot of a web page and get HTML that approximates it.

A toolbox of free online utilities including CSS minify, JSON format, encryption, QR codes and image tools.

Converts a Hugging Face model to the ONNX format.

Describe a web page or small app and Qwen3-Coder writes the HTML, with a live preview.

A collection of online utilities for web developers and programmers, hosted as one tool site.

An open-source set of lightweight HTML tools that run in the browser with no install and keep data private.

Describe a small app and get generated code that previews in the page.

Converts PyTorch model weights to the safetensors format; asks for a Hugging Face token.

Generate and complete code by typing a prompt into the Code Llama playground.

Edit a Jinja chat template and preview how it formats a conversation into model input text.

Converts a Hugging Face model to Apple MLX format and uploads it to your account; needs login.

Markdown 排版工具：33 种主题，一键复制到微信公众号/知乎/掘金，可导出 HTML/图片｜Markdown formatter for WeChat articles

A toolbox of over 1,000 single-file HTML tools that run in the browser, work offline and keep data local.

Online developer toolbox with 146 tools for formatting, encoding, hashing, network lookups, text processing and colors.

Toolbox with text processing, code formatting, regex testing, encoding, hashing and other web utilities.

Hosted GraphiQL that connects to any GraphQL endpoint URL you supply.

Try JMESPath expressions against JSON in an interactive tutorial and tester.

A visual designer for laying out multi-agent systems for Claude Code.

Estimates collision odds for Nano ID given alphabet size, id length and generation speed.

Paste JSON to beautify it, pretty print it and explore it as a collapsible tree.

Auto-detects pasted strings such as JWT, JSON, base64, URI, timestamp or gzip and shows the decoded view.

Explains a cron expression in plain words, field by field, and lists the next ten run times.

Moves the CSS you paste into inline style attributes on the HTML, the format email clients expect.

Converts CSS pixel values to rem and back.