MiConvert
File conversion for 140+ formats incl. 3D/CAD (STEP, IGES, STL), OFD to PDF and WEM; free tier

OCR that extracts text from images and PDFs, with optional translation of the result.
Optiic API is a free Documents & Productivity API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.
Online · 1535 msTested Nov 15, 2026 · checked dailyIs it down? Status & uptime
Optiic is an advanced free OCR & image recognition API. The Optiic cloud OCR API is a free REST-based Web API to extract text from images and convert scans to searchable PDFs.
Details from optiic.dev.

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Geocode an address, validate an email, track a flight or pull stock data with one account, one dashboard and one API key.
File conversion for 140+ formats incl. 3D/CAD (STEP, IGES, STL), OFD to PDF and WEM; free tier
Extract and analyze data from 107+ file types and URLs into structured JSON, with a free tier
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The Optiic API is provided by Optiic (optiic.dev). Optiic is an advanced free OCR & image recognition API. The Optiic cloud OCR API is a free REST-based Web API to extract text from images and convert scans to searchable PDFs.
Yes. The Optiic API is listed in the Documents & Productivity category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The Optiic API uses apiKey authentication, so you need to register for credentials before making requests.
Yes. The Optiic API supports CORS, so front-end JavaScript can call it directly.
Yes. The Optiic API is served over HTTPS, so it's safe to use in production.
Show that Optiic is listed on Public APIs. The badge displays its developer rating once it has one.
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