Over douni.one
douni.one is a collection of focused online tools for images, PDFs, text, data, code and everyday tasks. Pick a task, provide input and review the result — most tools run entirely in your browser.
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What can I do here?
Convert and edit images (HEIC, WebP, JPG, PNG, SVG and more), work with PDF pages, extract text from images, format and convert JSON, CSV and code, and use everyday helpers such as timers, random pickers and calculators. The directory and category pages group tools by task; every tool page has instructions, an example and its limits.
Where does processing happen?
Image, PDF, text and data tools run locally in your browser, so files are not uploaded. Image to text downloads its OCR engine and language data from a public CDN on first use. Tools that create PDFs from text (Markdown, Word, HTML, TXT, CSV, invoices) download Noto font files from fonts.gstatic.com (Google Fonts) on first use; your text is not sent. Some code converters send input to a server. Each tool page states how it works; check it and the privacy page before using confidential data.
How are the tools and guides made?
Each tool does one task. Its conversion logic is covered by automated tests, and results are checked in real browsers before release. Page guides and the translations into the site's supported languages are drafted with AI assistance and checked against what the tool actually does. If you find an error, please report it in the discussion at the bottom of the page.
How is the site funded?
The tools are free and need no account. The site is supported by advertising, including a clearly labeled, closable ad for Flux AI, a related AI image service.