- Home
- Sending medical documents to a portal.
Sending medical documents to a portal.
You do not need to hand this file to a converter.
You do not need to hand this file to a converter. Medical paperwork is about as sensitive as a document gets, and it nearly always arrives in the most awkward possible form: photographed on a phone, or scanned as a picture with no text in it at all.
Then the portal wants a single PDF under 5 MB, and you have eleven photographs.
The usual sequence
- Photographs into one document. Image to PDF, or HEIC to PDF if they came from an iPhone. Drag them into the right order before saving.
- Fit the upload limit. Compress Image before converting, or Compress PDF afterwards. Both show the resulting size before you commit.
- Straighten and trim. Crop Image to cut the desk out of the frame and rotate a photo taken sideways. It makes a phone photo look like a scan.
- Read the text out if you need to quote a result or search it — Image to Text (OCR) for a photograph, OCR PDF for a scan that will not let you select anything.
Why the OCR step matters here
Medical scans are almost always pictures of paper, so searching them is impossible until the words are recognised. Every mainstream OCR service does that recognition on a server, which means uploading a document containing a diagnosis to a third party. Here, Tesseract runs as WebAssembly in your browser — slower than a server, and nothing is transmitted.
Recognition is a best guess rather than a lookup. Check anything clinically important against the original rather than trusting the output.
Watch nothing leave
Open DevTools → Network → run a conversion. There is no upload endpoint to receive a file.
Common questions
Is it safe to convert medical records online?
On a server-based converter, the document reaches a third party. Here the work happens in your browser and nothing is transmitted, which you can verify in the Network panel.
How do I turn photos of a letter into one PDF?
Image to PDF. Add the photographs, drag them into order, and download a single document. HEIC to PDF handles iPhone photos directly.
The portal will not accept my file — it is too large.
Compress the images first, or compress the finished PDF. Both tools show the resulting size before you save.
Can I search a scanned medical letter?
Not until the text is recognised. OCR a PDF extracts the words so you can search or quote them. Check anything important against the original.
Does this work on a phone?
Yes, which is usually where the photographs already are. OCR is noticeably slower on a phone than a laptop.
Tools on this page
- Image to PDF — JPG, PNG, WebP, HEIC, AVIF — one PDF.
- Compress Image — Hit a size limit without guessing.
- Image to Text (OCR) — Read the words out of a photo or screenshot.
- HEIC to PDF — iPhone photos into a PDF, decoded here.