Scan to PDF
Use your camera to scan documents into a PDF.
Use your camera to scan documents
We’ll ask for camera access in the next step. Capture each page, review the stack, then download a single PDF — all in your browser.
We only use your camera for capture — frames are never uploaded.
Scan to PDF converts photos of documents taken with your phone's camera — or image files from a scanner — into clean, properly oriented, compressed PDF documents directly in your browser. Phone cameras are now the most commonly used scanning tool: they're always with you, take high-resolution photos in seconds, and require no additional equipment. The problem is that raw camera photos of documents are large, inconsistently lit, and often slightly distorted from the angle of the shot. Scan to PDF automatically detects the document edges, corrects perspective distortion, adjusts brightness and contrast for readability, and outputs a clean PDF — the same result you'd get from a desktop scanner, achieved with just a phone camera. iSavePDF processes everything in your browser using browser-image-compression and pdf-lib — your photos are never uploaded to a server. The tool is free with no account required and no watermark on the output.
Step by step
How to scan to pdf on iSavePDF
Open Scan to PDF on iSavePDF
Visit isavepdf.com/scan-to-pdf in any modern browser — Chrome, Edge, Firefox, Safari, or Brave. On mobile, open the tool in your phone's browser (Safari on iPhone, Chrome on Android) to take photos directly from within the tool. On desktop, upload photos you've already taken or images from a scanner.
Take a photo or upload an image
On mobile, tap the camera button to open your phone camera directly within the browser. Position the document on a flat, well-lit surface and take the photo. The document doesn't need to fill the entire frame — the tool detects the document edges automatically. Alternatively, upload an existing image file (JPG, PNG, HEIC) from your camera roll or file picker.
Review the auto-detected edges
The tool shows the detected document edges overlaid on your photo. Verify that the edge detection has correctly identified the document boundary — drag the corner handles to adjust if needed. Edge detection works best when there is good contrast between the document and the surface it's resting on.
Add more pages if needed
Tap 'Add page' to photograph or upload the next page of the document. Repeat for as many pages as the document has. The pages are assembled in the order you add them. You can reorder pages if you add them out of sequence.
Convert and download
Click Convert. The tool applies perspective correction, brightness adjustment, and compression to each page image, then assembles them into a multi-page PDF in your browser using pdf-lib. The result is saved to your downloads folder. No photo is uploaded at any point.
How it works
How Scan to PDF works
Allow camera access
When prompted, allow camera access. On phones we default to the rear camera for sharper text.
Capture pages
Position each page in the frame and tap Capture. Retake or remove any page from the strip below.
Download the PDF
Tap Build PDF when you're done. Each captured page becomes one A4 page in the output.
When to use it
Common use cases
Scanning receipts and expenses on the go
Expense management is one of the most common phone scanning use cases. A receipt from a business lunch, a taxi receipt, a parking ticket — photographed on the spot, converted to a clean PDF, and submitted to an expense system in minutes. The perspective correction and brightness adjustment produce a legible, professional-looking scan even from a quick phone photo taken in poor lighting. Because expense photos often include amounts and merchant details, local processing with no upload is the right approach.
Scanning signed contracts and forms
A printed contract signed by hand needs to be converted to a digital document for archiving, email, or system upload. A flatbed scanner is the traditional tool for this, but scanning on a phone is faster and more convenient. Scan to PDF produces a clean digital version of the signed document that can be immediately emailed or uploaded without waiting to reach a scanner. Signed legal documents contain sensitive information — local processing means the content doesn't cross a network.
Digitising paper records
Paper documents that need to enter digital workflows — invoices, purchase orders, delivery notes, ID documents, qualifications — can be digitised with a phone camera in seconds. Scan to PDF produces a file compatible with document management systems, email attachments, and digital filing. Converting an inbox tray of paper documents into searchable PDFs at the end of the day is a common use case for admin and office workflows.
Creating a portable digital copy of identity and travel documents
Passports, driving licences, insurance cards, and visas are sometimes needed digitally when the originals can't be carried — for online forms, remote onboarding, or as a backup when travelling. Scanning these with Scan to PDF produces a clean digital copy that can be stored securely or submitted when required. These documents are among the most sensitive you could photograph — the fact that the conversion happens locally with no server upload is directly relevant.
Why iSavePDF
The privacy-first way to scan to pdf
Phone-to-PDF conversion apps on the App Store and Play Store almost universally require a cloud account and upload your photos to their servers for processing. The document scanning workflow — photographing physical documents to create digital copies — is precisely the workflow that most often involves sensitive content: signed contracts, identity documents, financial records, medical paperwork. Having these photos travel to an unknown server before you get your PDF is the opposite of the security guarantee you should expect.
iSavePDF's Scan to PDF processes everything in your browser. The camera input or uploaded image is read directly from your device, edge detection and perspective correction happen in the browser's canvas API, compression and PDF assembly run in pdf-lib in your browser's JavaScript engine, and the finished PDF is saved to your downloads folder. Your photos never leave your device. The tool is free and funded by display advertising.
Tips & limits
Tips for the best results
Good lighting and contrast improve edge detection
The automatic edge detection works best when the document is on a contrasting background — a white paper on a dark table, a dark document on a light surface. Avoid photographing in very low light or with strong shadows across the document. Even lighting from two sides produces the best results.
Flatten curled pages before photographing
Books and magazines have pages that curve away from a flat surface at the edges. Photographing a curved page produces a scan with perspective distortion that's harder to correct automatically. Press the page flat with your hand (photographed from the top) or use books to weight the corners before scanning.
Use the full camera resolution
The higher the resolution of the source photo, the sharper the scanned PDF will be. Modern phone cameras at 12–48 megapixels produce excellent scan quality. Avoid using a zoomed or downscaled image — the full-resolution original from the camera produces the best output.
Compress the output for large multi-page documents
Phone camera photos are high resolution and produce large PDFs even with compression applied. For multi-page documents, run the output through iSavePDF's Compress PDF tool to reduce the file size for emailing or uploading. The visual quality remains sufficient for document reading and printing.
FAQ
Frequently asked questions
- Yes — completely free with no account, no watermark, and no usage limits.