You have a PDF, but you cannot copy a single word out of it. Try to select a line and nothing highlights — the cursor just drags a blue box over what looks like text. That file is a scan: someone photographed the pages or ran them through a scanner, so what you are looking at is a picture of words, not words. OCR — optical character recognition — is what turns those pictures back into text. It looks at the shapes on the page, recognises them as letters, and gives you characters you can select, search, paste and edit. It is how you get the address off a scanned utility bill without retyping it, or the questions out of a photographed question paper. GoPDFGo's OCR PDF tool does this inside your browser. The recognition engine is downloaded to your device and runs on your own processor, so a scanned Aadhaar card, salary slip or agreement is never uploaded to anyone's server. And because most Indian paperwork is bilingual, it reads Hindi and English together — not one or the other.
A real example: getting the text off a bilingual government form
Common problems and how to fix them
The Hindi came out as random Latin letters
The English-only model was selected. It cannot read Devanagari at all, so it approximates the shapes with Latin characters and the result is unusable. Switch to Hindi, or Hindi + English if the page has both, and run it again.
It is taking a very long time
That is expected, and it is the honest cost of reading every page as an image. A long scan on a phone can take a minute or more, and the first run also downloads the language data. Leave the tab open and in the foreground; the progress bar shows the real page count so you can see it moving.
A few characters or digits are wrong
OCR guesses from shapes, so it confuses similar ones — a 1 with an l, a 0 with an O — and loses accuracy on faint, blurry or handwritten text. Proofread anything you will act on. A sharper, straighter, higher-contrast scan is the single biggest improvement you can make.
Nothing came back at all
Either the page is genuinely blank, or the scan is too faint or too skewed for the engine to find any letters. Rescan at a higher quality if you can. If the first run failed outright, check your connection too — the language data is fetched once on first use.
Why Run OCR in Your Own Browser?
Hindi and English, Together
Most Indian forms print both scripts on the same line, and a single-language pass mangles whichever one it was not built for. This reads Hindi and English in one go, so a bilingual application form comes back readable end to end instead of half nonsense.
The Scan Never Leaves Your Device
The recognition engine is downloaded to your browser and runs on your own processor. That matters here more than anywhere: the documents people OCR are exactly the sensitive ones — Aadhaar copies, salary slips, agreements, medical reports — and none of them are uploaded.
Plain Text You Can Actually Use
The result is clean text, not another locked-up file. Copy it straight into WhatsApp, an email or a form, or download it as a .txt to keep. Page breaks are marked so you can tell where each page ends.
When You Need OCR on a Scanned PDF
Scanned Government Forms & Certificates: Pull the name, number or address off a scanned form without retyping it, whether the labels are in Hindi, English, or both.
Old Documents You Only Have on Paper: A degree certificate, a rent agreement, an old bill — scan it once and get a searchable text copy you can keep and paste from.
Photographed Notes & Question Papers: Turn a phone photo of printed notes or a question paper into text you can reformat, translate, or share.
Anything a Text Extractor Returned Empty: If PDF to Text gave you nothing, the file is a scan — this is the tool that reads it.
How to OCR a PDF Online
Upload the scanned PDF: Drag and drop the file or tap to select. It stays on your device the whole time.
Pick the language on the page: Hindi + English is the default and suits most Indian paperwork. Choose English or Hindi alone if the page is only one script — it is a little faster.
Run the OCR: Each page is rendered and read in turn. The first run also downloads the language data, so give it a moment.
Copy or download: Read the text on screen, copy it all with one tap, or download it as a .txt file. Proofread anything important before you rely on it.
OCR PDF FAQs
Does it work on Hindi documents?
Yes. You can read a page as Hindi, English, or Hindi + English together — the last one is the default, because most Indian forms print both scripts on the same page. Picking the right language matters: the English model cannot read Devanagari at all, and will return nonsense rather than imperfect Hindi.
What is the difference between this and PDF to Text?
PDF to Text lifts the text layer that is already inside a normal PDF — instant and exact, but it needs that layer to exist. OCR PDF is for scans, where the pages are images and there is no text layer, so the words have to be recognised visually. If you can select text in your PDF with a cursor, use PDF to Text; if you cannot, use this.
Is my scanned document uploaded anywhere?
No. The OCR engine is downloaded to your browser and runs on your own device. Nothing about the file — not the images, not the text it produces — is sent to us. That is the whole reason to run OCR here rather than on a site that wants your Aadhaar copy on its server.
Does it give me back a searchable PDF?
No, and it is worth being clear about that. You get the text as plain text you can copy or download as a .txt file. It does not rebuild your scan into a PDF with an invisible text layer behind the images. If you need the words, this is what you want; if you specifically need a searchable PDF, this is not that tool.
Why is it so slow compared to the other tools?
Because it does far more work. Every page is rendered to an image and then examined shape by shape, which is genuinely heavy — this is the slowest job on the site, and a phone takes longer than a laptop. The first run also downloads the language data (a few MB), though that is cached afterwards.
How accurate is it?
Good on clear printed text, and imperfect by nature. Similar shapes get confused — a 1 with an l, a 0 with an O — and faint, skewed or handwritten pages read worst. Always proofread anything you will act on, especially numbers. A sharper, straighter scan improves the result more than anything else you can change.
Does it work on my phone?
Yes, in Chrome, Safari and other modern browsers on Android and iPhone, with nothing to install. It will be slower than a laptop, and the first run downloads the language data, so use Wi-Fi if your data is limited.