How accurate is it?
On a clean screenshot or a flat scan of printed text, high enough to paste and skim: measured on a synthetic 200 dpi scan of an English contract, 0.2% of characters wrong, on Portuguese 0.7%, on Russian 0.6%. On a photograph taken at an angle or in poor light, low enough that you should read it against the picture before using it. The tool lists the lines it was least sure of, so the checking has somewhere to start.
Can it read handwriting?
It has not been measured on real handwriting, so this page does not claim it. The models are trained on printed type; on a cursive-shaped font — which is not handwriting — they got about 2% of characters wrong, ten times the print rate, and on a real hand they will produce confident-looking text that you must check against the picture. A page that promises handwriting will exist when there is a number behind it.
Which languages does it handle?
English and forty-six other languages written in the Latin alphabet, plus Chinese and Japanese, with one model. Russian, Ukrainian and Belarusian with a second recogniser you choose in the options, because it is an extra eight megabytes that most visitors should not download. Other scripts — Korean, Arabic, Greek, Thai, Devanagari, and Cyrillic outside those three languages — exist as models of the same family and will arrive the same way, as a choice.
What runs on the graphics card?
Both models, when the browser offers WebGPU — Chrome, Edge and Safari 26 do. Where it does not, the same models run on one processor thread with the same result: about two seconds a page in Chrome or Edge, six to eleven seconds in Safari, measured on an Apple M4 Mac. The result panel names which one read your picture.
Can it read the text in a scanned PDF?
Yes, and it has its own tool: OCR a PDF draws every page and reads it in one step, and gives the scan back as a searchable PDF as well as text. Use that one for a document; this one is for a picture you already have.
Is my picture uploaded?
No. The reader and its models are downloaded to this browser and the picture is read here; nothing about it leaves the device. The page can be watched doing exactly that in the browser's network panel: after the models arrive, no request carries your picture anywhere.