A phone photo,
returned as a clean sheet.
Crop, adjust contrast, and straighten by hand when you need to — then export a printable A4 PDF, or compress toward the size a form asks for. Files never leave your device.
This browser can’t open PDFs — it’s too old to run the PDF engine. Use the latest Chrome, Edge, Firefox or Safari, or a newer phone or computer.
Add
On a computer, drag images or PDFs here, or paste a screenshot (Ctrl / ⌘ + V).
Adjust
EffectWhitens the paper background; dark print stays dark.
Removes the color and adds a little contrast.
Keeps the original colors, with no tone change.
Pushes ink to black and paper to white; some gray can remain.
Evens out shadows and uneven light; keeps colored ink and stamps.
Fades blue, red and green ink; cannot reliably remove black handwriting.
Warm gray paper, fine grain and a slight tilt; colored ink turns gray.
Export
Export optionsA4 · Single · No limit
ID card: places the first two pages as front & back at ID-1 size on one A4 sheet. Use Edit to crop or align the four corners.
PNG is lossless, so target sizes do not apply.
Uses original photos. Larger files and slower export. Available with No limit or PNG.
Optional. Keeps the image ratio and never exceeds the page.
Popular tools
All tools in one place
Each tool opens with just the controls it needs and the same crop-mark editor. Nothing is uploaded.
Scan & clean
Size & convert
ID & forms
From our studio
How to scan a document to PDF
Photograph it, crop and straighten, choose a scan effect, then export — you get a clean scanned PDF, no hardware needed.
- 1
Capture: photograph the document
Photograph any paper document or add images — multiple pages merge into one PDF in order.
- 2
Refine the scan in your browser
Crop, straighten, fix perspective, and pick a scan effect — right in your browser.
- 3
Export a printable scanned PDF
Save a clean, printable scanned PDF, or compress it toward an upload limit.
Made for real documents
Crop, adjust contrast, and straighten by hand when you need to — then export a printable A4 PDF, or compress toward the size a form asks for. Files never leave your device.
Scanner-quality results
De-shadow, perspective correction and document whitening turn a phone photograph into a proper scan — a real document scanner, no hardware needed.
Built for upload limits
Aim for an upload limit such as 200 KB, or lay out 2-up and ID-card copies for printing.
Private by design
Every file-processing step runs in your browser — no upload of your files and no account needed.
Free on any device
Unlimited, no watermark, works on phone, tablet and computer, in your language.
Who uses LensUp?
Government and job applications
Need to compress an image to 200 KB for an application portal? LensUp works toward that upload limit and warns you when the target cannot be reached.
Students and teachers
Scan worksheets, straighten photographed pages, and fade colored pen marks while keeping dark printed text visible.
ID and paperwork errands
Make an ID card copy with the front and back on one A4 page at ID-1 size. Use Edit to crop or align each side manually.
Receipts and records
Photograph receipts or paper records, arrange the pages, and merge them into one PDF in the order you choose.
Sources and technical references
These standards and browser references support the file-handling, image-processing and ID-card format statements above.
- W3C File API
Defines how a web application can access files that a person explicitly selects.
- MDN Canvas API
Documents browser-side drawing and photo manipulation used for local scan effects.
- ISO/IEC 7810:2019
Defines physical characteristics for identification-card formats, including the ID-1 format used by the copy layout.
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.
Is it really free and private?
Yes. Unlimited, no watermark, no sign-up, and every step runs locally in your browser — files are never uploaded.
Can I compress a PDF to 200 KB or another upload limit?
Choose a target such as 200 KB or 500 KB. LensUp tries to stay below it, but extreme targets may still return the smallest possible file with a warning.
How do I scan a document to PDF without an app?
Photograph the page or choose an image, crop and straighten it, pick a scan effect, then export a scanned PDF. Everything runs in your browser, with no app or upload.
How do I remove the shadow from a document photo?
Use De-shadow to remove shadow from the scan and even out the lighting, then use Edit to crop or correct perspective. Everything stays in your browser.
Open the de-shadow toolCan I scan an ID card front and back onto one page?
Choose the ID card layout to place the first two pages as front and back at ID-1 size on one A4 sheet. Use Edit to crop or align the four corners manually.
Open the ID card copy tool