PDF yang boleh dicari
Ubah PDF yang diimbas ke PDF yang boleh dicari
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A searchable PDF file, also known as an OCR (Optical Character Recognition) PDF, is a digital document that contains both scanned images of the pages of the original document and the recognized text obtained from those scans. This recognition process allows you to search and highlight text in a PDF file just as you would in a regular text document.
Here's how it usually works:
Scanning: First, the PDF document is scanned into a digital image format. This scanned image is essentially a document page image.
Optical Character Recognition (OCR): Next, OCR software is used to analyze the scanned images and recognize any text characters that appear in them. This software identifies individual characters or words and converts them into machine-readable text.
Adding a text layer: The recognized text is then added as a hidden text layer to the PDF document. This text layer remains invisible to the viewer, but is accessible to search engines and text selection tools.
Combining text and images: OCR-processed text is combined with original scanned images to create a searchable PDF file that contains both a visual representation of the document and the underlying textual data.
Advantages of searchable PDF files: searchability, accessibility for people with visual impairments,
text indexing by search engines and others.
data extraction: Companies can extract structured data from documents such as invoices or forms to automate data entry processes.
It is important to note that OCR quality and text recognition accuracy may vary depending on factors such as the quality of the original document, the OCR software used, and the language of the text. Advanced OCR software can handle multiple languages and improve accuracy using machine learning techniques, making searchable PDFs a valuable tool for document management and information retrieval.
Note if your pages are rotated, we recommend that you rotate them to the correct orientation for better text recognition. You can do this using our PDF page rotator.
Welcome to our web-based application for converting scanned PDFs to searchable! Whether you're using a computer or a mobile device, our convenient platform provides searchable PDF conversion across all operating systems.
Our free web software with no registration and no code verification supports text recognition in up to 32 languages.
Imagine the efficiency of converting up to 10 files in one pass! We understand the importance of resource management, which is why our web application has an overall file size limit of 32 MB per pass. This ensures that you can convert large amounts of data while maintaining optimal performance. Converting large searchable PDFs can take several hours, so we've included a progress bar to let you know how long you'll have to wait for the conversion to complete.
Although your files are stored on our server for 24 hours, we value your privacy, so we allow you to delete files immediately after processing.
Experience the convenience of our application, which is available for free and is available on any desktop or mobile operating system.
You can also recognize text in raster images using our OCR text recognizer.
Bagaimana ia berfungsi
Pilih fail
Anda boleh memilih fail dari sistem fail, Dropbox dan Google Drive.
Tekan butang “Mengubah”
untuk memuat naik fail untuk diproses.
Tunggu siap
Ia akan mengambil masa dari 10 saat hingga beberapa minit bergantung kepada bilangan dan saiz fail.
FAQ
Apakah PDF yang boleh dicari?
PDF yang boleh dicari, juga dikenali sebagai PDF OCR (Optical Character Recognition), adalah sejenis dokumen yang mengandungi kedua-dua imej yang diimbas dan teks yang boleh dibaca mesin. Ini membolehkan pengguna mencari dan memilih teks dalam dokumen, menyalinnya, dan melaksanakan fungsi berasaskan teks. Akibatnya, kandungan PDF menjadi boleh dicari dan diedit.
Bagaimanakah PDF yang boleh dicari dibuat?
PDF yang boleh dicari dibuat melalui teknologi Optical Character Recognition (OCR). Perisian OCR mengimbas teks dalam dokumen, mengenali aksara, dan membenamkan teks ini secara tidak kelihatan dalam fail PDF, di samping imej yang diimbas. Lapisan teks tersembunyi ini digunakan untuk mencari dan pemilihan teks.
Bolehkah saya mencari perkataan atau frasa tertentu dalam PDF yang boleh dicari?
Ya, salah satu kelebihan utama PDF yang boleh dicari adalah keupayaan untuk mencari perkataan atau frasa tertentu. Anda boleh menggunakan alat kami untuk mencari perkataan.
Adakah terdapat sebarang batasan untuk PDF yang boleh dicari?
Walaupun PDF yang boleh dicari sangat berguna, mereka mempunyai beberapa batasan: Ketepatan OCR: Kualiti hasil OCR boleh berbeza-beza bergantung pada perisian dan kualiti dokumen yang diimbas. Saiz fail: PDF yang boleh dicari selalunya lebih besar dalam saiz fail berbanding dengan yang tidak boleh dicari kerana teks terbenam. Pemformatan: OCR mungkin tidak mengekalkan pemformatan, fon, atau susun atur yang kompleks dengan tepat.