Free online developer tools

27 tools

Small utilities developers reach for daily: JSON and YAML formatters, Base64 and URL encoders, regex testers, JWT decoders, diff viewers and cron helpers. Prefer tools marked as running in your browser when you paste tokens, keys or production data, because nothing is uploaded.

Showing 1–24 of 27

0.676score
AnyCoder
akhaliq
Generates code and small apps from a prompt with a choice of models; sign in with Hugging Face.
ArtifactAI★ 3.3Kdeveloper tools
0.673score
DeepSite v4
enzostvs
Generates a web application from a text prompt through vibe coding.
ArtifactAI★ 16.6Kdeveloper tools
0.666score
GGUF My Repo
ggml-org
Converts a Hugging Face model to a quantized GGUF file and uploads it to your account; needs login.
Artifact★ 2.1Kdeveloper tools
0.661score
InstantCoder
osanseviero
Generates a small web app from a prompt and shows the result immediately.
ArtifactAINo sign-up★ 1.5Kdeveloper tools
0.647score
Screenshot to HTML
HuggingFaceM4
Upload a screenshot of a web page and get HTML that approximates it.
ArtifactAINo sign-up★ 934developer tools
0.625score
Convert to ONNX
onnx-community
Converts a Hugging Face model to the ONNX format.
ArtifactAI★ 195developer tools
0.624score
Qwen3 Coder WebDev
Qwen
Describe a web page or small app and Qwen3-Coder writes the HTML, with a live preview.
ArtifactAINo sign-up★ 1.2Kdeveloper tools
0.621score
Qwen2.5 Coder Artifacts
sambanovasystems
Describe a small app and get generated code that previews in the page.
ArtifactAINo sign-up★ 276developer tools
0.621score
Convert to Safetensors
safetensors
Converts PyTorch model weights to the safetensors format; asks for a Hugging Face token.
ArtifactNo sign-up★ 270developer tools
0.619score
Code Llama Playground
codellama
Generate and complete code by typing a prompt into the Code Llama playground.
ArtifactAINo sign-up★ 251developer tools
0.616score
Chat Template Playground
huggingfacejs
Edit a Jinja chat template and preview how it formats a conversation into model input text.
ArtifactNo sign-up★ 221developer tools
0.613score
MLX My Repo
mlx-community
Converts a Hugging Face model to Apple MLX format and uploads it to your account; needs login.
Artifact★ 220developer tools
0.588score
DeTikZify
nllg
Converts a sketch or figure image into TikZ code for LaTeX documents.
ArtifactAINo sign-up★ 91developer tools
0.587score
OpenVuln
zai-org
Scans a repository for bugs using GLM models.
ArtifactAI★ 218developer tools
0.587score
Export to ONNX
onnx
Exports a Hugging Face model to ONNX and opens a pull request with the result; needs login.
Artifact★ 84developer tools
0.586score
GitHub Repo to Plain Text
Nymbo
Fetches a GitHub repository and merges its files into one text file for pasting into an LLM.
ArtifactNo sign-upIn-browser★ 66developer tools
0.585score
Llama Token Counter
Xanthius
Counts the number of tokens a piece of text uses with the Llama tokenizer.
ArtifactNo sign-up★ 80developer tools
0.583score
GitHub Issue Generator
reach-vb
Writes a GitHub issue draft with SmolLM2 running locally in the browser on WebGPU.
ArtifactAINo sign-upIn-browser★ 56developer tools
0.580score
WebLLM Structured Generation
mlc-ai
Generate structured output such as JSON from an in-browser WebLLM model.
ArtifactAINo sign-upIn-browser★ 50developer tools
0.561score
PGlite Semantic Search
thorwebdev
Vector search over documents using a Postgres running in WebAssembly (PGlite) inside the browser.
ArtifactAINo sign-upIn-browser★ 20developer tools
0.561score
MiniCPM5-2B WebGPU Pi
victor
Runs a small coding agent entirely in the browser using WebGPU, with no server needed for the model.
ArtifactAI★ 103developer tools
0.544score
The Tokenizer Playground
Xenova
Lets you try different tokenizers on your text and compare how each one splits it into tokens.
ArtifactAI★ 720developer tools
0.442score
Web Search MCP
victor
Searches the web and extracts page content in a form suited to feeding into LLMs.
ArtifactAI★ 173developer tools
0.440score
Coder
friuns
Browser-based AI assistant that helps write software.
Artifact★ 245developer tools