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https://github.com/simonw/tools

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https://github.com/simonw/tools

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Assorted tools

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README 

        
# tools



- [OCR](https://tools.simonwillison.net/ocr) for PDF files and images that runs entirely in your browser

- [Haiku](https://tools.simonwillison.net/haiku) generates Haikus from your camera using Claude 3 Haiku

- [Render Markdown](https://tools.simonwillison.net/render-markdown) renders Markdown to HTML using the GitHub Markdown API

- [Annotated presentation creator](https://til.simonwillison.net/tools/annotated-presentations) to help turn slides into an annotated presentation

- [Arena animated](https://tools.simonwillison.net/arena-animated) animates the progression of the LMSYS Chatbot Arena, inspired by [this visualization](https://public.flourish.studio/visualisation/17992181/) by [Peter Gostev](https://www.linkedin.com/posts/peter-gostev_how-companies-llms-compare-over-the-course-activity-7196899934615257090-zilk) (via [Time-Winter-4319 on Reddit](https://www.reddit.com/r/LocalLLaMA/comments/1bp4j19/gpt4_is_no_longer_the_top_dog_timelapse_of/))

- [Compare PDFs](https://tools.simonwillison.net/compare-pdfs) provides a visual comparison of the pages of two PDF files

- [Chrome Prompt Playground](https://tools.simonwillison.net/chrome-prompt-playground) is a UI for running prompts through the Google Chrome Canary experimental Gemini Nano LLM and saving the results in local storage

- [Box shadow CSS generator](https://tools.simonwillison.net/box-shadow) generates the CSS for a box shadow with interactive settings

- [Image resize and quality comparison](https://tools.simonwillison.net/image-resize-quality) converts an image to JPEGs using a number of different quality settings so you can select the smallest file size that is still usefully legible ([how I built this](https://simonwillison.net/2024/Jul/26/image-resize-and-quality-comparison/))

- [YouTube Thumbnails](https://tools.simonwillison.net/youtube-thumbnails) - paste in the URL to a YouTube video, get back all of the URLs to thumbnail images of different sizes for that video

- [Gemini API Image Bounding Box Visualizer](https://tools.simonwillison.net/gemini-bbox) - run prompts against Google Gemini models that return bounding box co-ordinates and visualize them against the original image, see [this post](https://simonwillison.net/2024/Aug/26/gemini-bounding-box-visualization/) for details

- [SVG to JPEG/PNG](https://tools.simonwillison.net/svg-render) - turn an SVG file into a rendered JPEG or PNG ([how I built this](https://simonwillison.net/2024/Oct/6/svg-to-jpg-png/))

- [Jina Reader](https://tools.simonwillison.net/jina-reader) - convert any URL to copyable Markdown using the [Jina Reader API](https://jina.ai/reader/)

- [Extract URLs](https://tools.simonwillison.net/extract-urls) - copy a section from a web page to your clipboard, paste it in here and get back a plain text list of all of the linked URLs from that section



On [Observable](https://observablehq.com/):



- [Blog to newsletter](https://observablehq.com/@simonw/blog-to-newsletter) helps me turn my blog into a [newsletter](https://simonw.substack.com)

- [Weeknotes](https://observablehq.com/@simonw/weeknotes) helps me write my [weeknotes](https://simonwillison.net/tags/weeknotes/)

- [Convert Claude JSON to Markdown](https://observablehq.com/@simonw/convert-claude-json-to-markdown) for sharing Claude conversation transcripts

- [Hacker News homepage with links to comments ordered by most recent first](https://observablehq.com/@simonw/hacker-news-homepage)