How to use
- Open ocr-hello.png.
- Read the word HELLO.
- Treat the confidence number as a hint, not a proof.
Formula / how it works
ocr-hello.png is the word HELLO drawn as large block letters on white. Tesseract, running in the browser with the English trained data shipped on this site, reads it as HELLO. The confidence number on that run was 37, which is low even though the word was right. Confidence is not a guarantee. A blurry photo, real handwriting, or a language other than English often comes back empty or wrong. The page says so. The image is not uploaded. The worker, the WASM core, and the English data are loaded only when you open this page. They are not loaded for a calculator. The download is a text file of the recognised words, not a new image.
HELLO with confidence 37 is the block-letter sample. The word was right and the score was still low, which is why you read the text and do not trust the number alone. Receipts, handwriting, and other languages are outside this English data. The image stays in the tab. The download is the words, not a new picture.
HELLO with confidence 37 is the block-letter sample. The word was right and the score was still low, so read the text and do not treat the number as proof. Receipts, pen handwriting, and other languages are outside this English data. The image stays in the tab. The download is a text file of the words. Tesseract, its worker, and the English trained data load only on this page.
The block letters on ocr-hello.png came back as HELLO. The confidence was 37. Both facts belong in the same sentence, because a correct word can still carry a low score. Read the words. Do not publish the score as certainty. A receipt, a photo of a sign, and real pen writing are harder than this block font, and languages other than English are not in the trained data on this page. The image is not uploaded. The text file is the download. The worker loads only here.
HELLO was recognised. Confidence was 37. Keep both numbers in mind: the word can be right while the score looks weak. That is why the text is for you to read, not for a form to trust blindly. Harder images and other languages are outside this English model. The picture is not uploaded. The download is the text file. The engine loads on this page only.
Work in this order. Use a sharp English image if you want a fair read. ocr-hello.png is block letters, and the engine returned HELLO with confidence 37. The word was correct. The score was still modest. That pair is the lesson. Read every line before you paste it into a document. A receipt, a sign at an angle, pen writing, and any language other than English are weaker or unsupported. The trained data on this page is English. The image is not uploaded. The download is a text file. The worker is fetched for this page alone.
Drawing a font is text to handwriting. A PDF text layer is PDF to text.
Worked examples
Block letters HELLO
Inputs: ocr-f: ocr-hello.png
On this page, take ocr-hello.png and press Read text. Read the words yourself. Confidence is a hint.
Result: OCR text:
HELLO
Confidence: 37
The same image again
Inputs: ocr-f: ocr-hello.png
On this page, take ocr-hello.png and press Read text. Read the words yourself. Confidence is a hint.
Result: OCR text:
HELLO
Confidence: 37
Use cases
- Checking that English block letters can be read locally.
- Seeing a low confidence beside a correct word.
- Refusing to OCR handwriting with a promise.
- Keeping the image off a server.
Tips & limitations
- This run said HELLO with confidence 37.
- A photo of a receipt is a harder page.
- English trained data only.
- The download is a text file.
FAQ
What did the sample say?
HELLO.
What was the confidence?
37 on this run. The word was still right.
Does a low score mean the word is wrong?
Not always. It means the engine was unsure. Read the text yourself.
Will it read handwriting?
Often poorly. The handwriting page draws a font. It does not recognise pen strokes.
Other languages?
No. English data only.
Is the image uploaded?
No. Tesseract runs in the tab.
HELLO with confidence 37 is ocr-hello.png. A blurry photo can come back empty.