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Invoice OCR
Read a scanned or photographed invoice into text, in your browser, with nothing uploaded.
Drop a scan, a photo or a scanned PDF here
Quick Tool Overview
Invoice OCR reads scanned and photographed invoices into text entirely inside your browser, sharpening the image first, reporting a confidence figure for the page and for every line, in more than a hundred languages.
- What it does
- Reads scanned invoices into text
- You give it
- A scan, a photo or a scanned PDF
- You get back
- Text, with per-line confidence
- Best for
- Invoices that arrive as images
About the Invoice OCR
OCR services want your invoices on their servers. An invoice carries a bank account, a customer list, prices you do not publish and often a home address — it is close to the worst document to hand to a free web service whose business model you cannot see.
This runs the OCR engine inside your browser. The engine is about thirty megabytes and is fetched from a public CDN the first time you use it; after that the reading happens on your machine, and the image never goes anywhere. You can watch the network tab.
Drop a scan, a photo or a scanned PDF. The image is sharpened first — greyscale, a contrast stretch and a threshold, which roughly doubles accuracy on a phone photo, because the problem is almost always uneven lighting rather than resolution. You get the text, a confidence figure for the page and one for each line, so the lines worth checking are obvious. Over a hundred languages are available.
Key features of the Invoice OCR
Runs in the browser
The engine is fetched once, then works offline.
Image sharpening
Contrast and threshold, which doubles phone-photo accuracy.
Per-line confidence
The lines worth checking are marked.
Many languages
Pick the language of the invoice.
Nothing uploaded
An invoice is the last document to hand to a free service.
How to use the Invoice OCR
-
1
Drop the scan or photo
JPG, PNG, WebP or a scanned PDF.
-
2
Choose the language
The language pack is fetched once and cached.
-
3
Wait a few seconds
A page takes two to ten seconds depending on your machine.
-
4
Check the low-confidence lines
They are marked, and they are where the errors are.
Frequently asked questions
No. The OCR engine is downloaded and run in your browser. The image is read on your machine and nothing is sent anywhere.
The engine and the language data are around thirty megabytes and are fetched once, then cached by your browser. Later runs start immediately.
Scan at 300 dpi, keep the page straight, and avoid shadows. A flat, evenly lit photo beats a high-resolution one taken at an angle.
The common European languages, plus Arabic, Chinese, Japanese, Korean, Hindi, Bengali and others. Pick the language of the invoice, not yours.
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