Real-scan quality
De-shadow, perspective correction and document whitening turn a snapshot into a proper scan.
Free online document scanner
LensUp is a document scanner in your browser: photograph any paper and turn the photo into a clean, printable scanned PDF. Free, no upload, no sign-up.
Tap to use your camera, or pick from your gallery.On a computer, drag images here or paste a screenshot (Ctrl / ⌘ + V).
Drop to add
Scan effect
Tap a page to crop, rotate or fix perspective. Drag ⠿ to reorder.
Export options
Paper size
Layout
ID card: first two pages (front & back) on one A4 sheet.
Compress to
Everything runs in your browser — your files are never uploaded.
How to scan a document to PDF
- 1
Capture
Photograph a page or add images. Multiple pages merge in order.
- 2
Refine
Crop, straighten, fix perspective, and pick a scan effect.
- 3
Export
Save a print-ready PDF, sized to fit, or a searchable one.
Made for real documents
Fits every form
Compress to an exact size like 200 KB, lay out 2-up or an ID card, add a searchable text layer.
Yours, private
Every step runs in your browser. Nothing is uploaded, no account needed.
Free, everywhere
Unlimited, no watermark, works on phone, tablet and computer, in your language.
Why use an online document scanner?
An online document scanner replaces the flatbed scanner most of us no longer own. You photograph the paper with your phone, and LensUp turns that photo into a document that looks properly scanned: flat, straight, evenly lit, with a clean white background. The same tool handles every photo to PDF and image to PDF job — contracts, receipts, homework, certificates, prescriptions, notes on a whiteboard. No app to install, nothing to configure: open the page and scan.
What separates a scanned document from a snapshot is geometry and lighting. LensUp fixes both: perspective correction pulls a skewed photo back into a flat rectangle, de-shadow evens out the light across the page, and the white-document effect purifies the background so text stays sharp and printers use less ink. Multiple pages merge into one PDF in the order you choose, laid out on standard A4 or Letter paper with proper margins.
The scanner also solves the most common follow-up problem: file-size limits. Government portals, exam registrations and job applications often cap uploads at 200 KB or 500 KB. Instead of guessing, pick the target and LensUp compresses the PDF to size — it searches for the best quality that still fits under the cap, for a single image or a whole multi-page document.
A few everyday examples: scan to PDF a signed contract and email it back in one minute; photo to PDF a stack of receipts for reimbursement; convert an image to PDF with a searchable OCR layer so the text can be quoted later; wipe the pen marks off a worksheet and print a blank copy for a second attempt; put both sides of an ID card on a single page for an application. Each of these is one preset away in the tools below.
Everything runs locally: the scan, the edits, the OCR and the PDF are produced on your device, and your documents are never uploaded to a server. That makes LensUp a fast, private document scanner that works the same on a phone, a tablet or a computer — in 14 languages.
Free scanner tools
Each tool is the same scanner, opened with the right options preset.
📄 Scan to PDF
Photograph a document and export a clean, printable scanned PDF — multiple pages merge in order.
🗜️ Compress PDF to 200 KB
Compress a PDF or image to an exact size to pass form upload limits.
🔎 Image to searchable PDF
OCR turns a photo into a PDF you can search and copy text from.
◳ Perspective correction
Drag four corners to straighten a skewed document photo into a flat scan.
💡 Remove shadow from scan
Even out the lighting so the page turns clean white.
🧽 Erase handwriting
Wipe pen answers off a printed worksheet and reprint it blank.
🪪 ID card copy
Front and back of an ID card on one printable A4 page.
🧰 All scanner tools
Every free tool, also in Bahasa Indonesia and 中文.
Document scanner FAQ
How do I scan a document to PDF without a scanner?
Photograph it, crop and straighten, choose a scan effect, then export — you get a clean scanned PDF, no hardware needed.
How do I turn a photo into a PDF?
Add the photo (or several), pick a scan effect if you want the document look, and press Export PDF. A single photo can also be exported as a compressed JPG instead — useful when a form asks for an image rather than a PDF.
How do I compress a PDF to 200 KB?
Open Export options, choose the 200 KB target (or type a custom KB value) and export. The scanner re-encodes the document at the highest quality that still fits under the limit, only reducing resolution when a very small target demands it.
Can I convert multiple images to one PDF?
Yes — add as many images as you need and they merge into a single PDF in order. Drag the ⠿ handle to reorder pages, tap × to remove one, and use the 2-up or 4-up layout to save paper when printing.
Is this document scanner really free and private?
Yes. Unlimited, no watermark, no sign-up, and every step runs locally in your browser — files are never uploaded.
Does it work on a phone?
Yes — the scanner is built mobile-first. Tap the button to open your camera, shoot the page, and edit with your fingers: pinch-free corner handles for perspective, drag to crop, hold to compare with the original. It works the same on iPhone, Android, iPad and desktop.
Can the scanned PDF be searchable?
Tick “Searchable PDF (OCR)” before exporting. The text is recognized on your device and embedded as an invisible layer, so the PDF looks like the scan but can be searched with Ctrl+F and copied. The first run downloads a language pack.
How do I copy both sides of an ID card onto one page?
Photograph the front and the back, then choose the ID card layout in Export options — both sides are placed on one A4 sheet, ready to print.
Can I compress the PDF to fit an upload limit?
Yes — pick a target size like 200 KB or 500 KB and the export is squeezed to fit, as a JPG for one image or a PDF for several.