Edit Text
Select and modify existing text in your PDF. Change fonts, colors, size, and styling with an intuitive inline toolbar.
Free Online PDF Editor with OCR
Edit PDF text, extract text from scanned PDFs and images with built-in OCR, annotate, sign, and merge documents — right in your browser. No uploads to external servers. No sign-up needed. Your files stay private on your device.
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Everything you need to edit PDFs
OCR Text Extraction
Edit PDF images and scanned PDFs. Built-in OCR recognizes text inside any image — extract, replace, or delete words while the original background blends in automatically.
Add Signatures
Sign documents by drawing, typing, or uploading your signature. Place it anywhere on the page.
Draw Shapes
Add lines, rectangles, ellipses, and arrows. Customize stroke color, fill, width, and opacity.
Annotate
Highlight, strikethrough, or add squiggly underlines to emphasize or mark up text in your documents.
Add Images
Insert images into your PDF pages. Resize, rotate, and adjust opacity to fit your needs.
Merge PDFs
Combine multiple PDF files into a single document. Reorder pages and download the merged result.
Preview & Download
Preview your changes before exporting. Download the modified PDF with all edits baked in.
About OCR Text Extraction in PDFRox
PDFRox is a free online PDF editor with built-in OCR (Optical Character Recognition) — so you can edit PDF images, edit scanned PDFs, and turn locked-down image text into editable, searchable content. No installs, no sign-up, and nothing ever leaves your browser.
What OCR PDF editing means
Many PDFs aren't really "text" — they are pictures of text. Scans, screenshots, photos of forms, receipts, and image-only exports all fall into this group, and a normal PDF editor can't touch the words inside them. OCR PDF tools change that: they look at the pixels, detect each line of writing, and turn it back into real editable text you can correct, replace, or remove.
PDFRox runs that pipeline directly in your browser. Open any PDF, click an image or scanned page, hit Extract Text, and every line becomes its own editable text box positioned exactly where it was in the image.
What you can do
- Edit text in a PDF image — fix typos in a scanned form without redoing the layout.
- Extract text from PDF images for copy-paste, search, or accessibility.
- Make scanned PDFs editable — replace dates, names, prices, or any other content.
- Remove or redact sensitive words inside images and screenshots.
- Convert image text to editable text while keeping the original background color.
Why PDFRox OCR is different
- 100% private: OCR runs entirely client-side. Your PDF, scans, and extracted text never leave your device.
- Background-aware: each extracted line samples the surrounding image color, so edits blend into the original page instead of leaving a white box.
- Line-accurate placement: spatially separate labels stay separate — captions, headings, and table cells don't get merged into one giant block.
- No installs: works in any modern browser on Windows, macOS, Linux, Chromebook, iPad, or Android.
- Free forever: no watermarks, no page limits, no account required.
Typical use cases
- Edit a scanned contract or invoice before signing.
- Update a screenshot embedded in a PDF (diagrams, slides, manuals).
- Fix OCR errors in an old archived document.
- Translate or rewrite image-only text in research papers and ebooks.
- Redact sensitive words from image-based PDFs.
How it works under the hood
PDFRox combines pdf.js for rendering, Tesseract.js for in-browser OCR, and pdf-lib for writing the edited PDF back out. The whole edit-extract-export loop happens locally, which is why it stays free, fast, and private — there's no server cost on our side, and no privacy cost on yours.
Ready to edit your PDF?
No sign-up required. Free and private.
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